JP4179619B2 - Rehabilitation pipe and rehabilitation method for underground buried pipe - Google Patents

Description

  In the present invention, when an underground buried pipe such as a sewer pipe is damaged, such as cracks or corrosion, the rehabilitated pipe divided segments are carried into the buried pipe without cutting, and the segments are joined in the buried pipe. The present invention relates to a technology for forming, connecting the rings sequentially, laying a new rehabilitation pipe, and restoring the function of the buried pipe, and belongs to the civil engineering field.

As a method of rehabilitating underground buried pipes, a large number of segments divided into pipes slightly thinner than the buried pipes are carried into the buried pipes, and the divided segments are joined and connected in the circumferential direction and length direction. A technique for laying a new circular pipe has already been proposed (Japanese Patent Laid-Open No. 10-148296) and exists as a conventional example.
7 and 8 are diagrams showing the conventional example, FIG. 7A is an exploded perspective view of the segment, FIG. 7B is a plan view of the inner surface of the segment, and FIG. Fig. 8A is a partially broken end view of the segment, Fig. 8A is a cross-sectional view of the connection direction in the circumferential direction of the segment, and Fig. 8B is a cross-sectional view of the connection direction in the length direction of the segment. 8 (C) is an explanatory view taken along line CC in FIG. 7 (B).

That is, the conventional example includes a skin plate in which a segment is divided in the circumferential direction as shown in FIG. 7A, and the skin plate has an inner side wall, a bottom plate, and an outer side wall at the longitudinal front and rear ends. The flanges extending over the skin plate straight edge and the flange end are welded and integrated into the segments at both circumferential ends of the skin plate.
In the segment, as shown in FIG. 7 (B), nuts for adjusting bolts and supporting brackets with female threads are arranged on the front and rear bottom plates of the bowl-shaped portion, and a backfill inlet is provided on one bottom plate. Is arranged.
In addition, a plurality of bolt holes are disposed at corresponding positions on the outer flange walls of the front and rear flanges, and bolt holes are also disposed at corresponding positions at the flanges on the left and right flanges.

As shown in FIG. 8 (A), the circumferential connection of each segment is achieved by attaching an adjustment bolt to the adjustment bolt mounting nut of each segment, maintaining an approximately equal gap with the inner circumference of the buried pipe, and connecting both segments between the flanges. The two flanges are fastened with bolts and nuts through the bolt holes of the hook-shaped portion to form a rehabilitation pipe ring.
In addition, as shown in FIG. 8 (B), the segments in the longitudinal direction are connected to each other by bringing the front and rear segments into contact with each other through the rubber packing and through the bolt holes in the outer wall. Tighten bolts and nuts.
Then, the circumferential connection of each segment on the bottom plate of the bowl-shaped part, the longitudinal connection, and the adjustment of the gap with the inner periphery of the embedded pipe by the adjusting bolt, the inner surface of the embedded pipe from the backfill inlet and the outer surface of the regenerated pipe After injecting the filler into the gap, as shown in FIG. 8C, the lid plate is stretched by fastening to the support fitting with female thread with a countersunk screw.
Japanese Patent Laid-Open No. 10-148296

  In the conventional example, the circumferential coupling of each segment is bolt and nut fastening in the space in the concave portion of the hook-like portion via the bolt holes between the flanges at the end portions on the segment side. The lengthwise coupling is also the bolt and nut fastening between the outer rib walls in the space in the recess of the hook-shaped part, and the gap adjustment by the adjusting bolt is also the work in the recess space of the hook-shaped part, so a narrow space The tightening of bolts and nuts in the inside is a large number of different operations in a narrow space, and is a complicated, difficult and inefficient operation.

  And since it is necessary to secure the depth and width of the recess of the bowl-shaped part necessary for the bolt and nut fastening operations between the segments, the inner diameter of the rehabilitation pipe formed by the skin plate is Due to the presence, the gap between the bottom of the bowl-shaped part and the inner circumference of the buried pipe (+) the depth of the concave part of the bowl-shaped part is smaller than the inner diameter of the buried pipe. There is a problem that the diameter becomes considerably smaller than the inner diameter of the buried pipe due to the dead space of the depth of the bowl-shaped portion.

In addition, the conventional connection between the segments is that the front and rear upright outer side walls, the left and right end upright flanges, bolts and nuts are fastened together, and the rehabilitation pipe inner peripheral surface must be flat. Therefore, it is essential to arrange the hook-shaped part for tightening the bolt on the segment, but the hook-shaped part also needs to be finished with the skin plate with the lid plate in the end, and welding work in the inner space of the pipe is Since it is dangerous, it cannot be carried out. Therefore, proper mounting of the cover plate is also complicated.
Moreover, even if the cover plate is mounted flush with the skin plate with screw means (disc screw), a slight gap at the abutting interface is inevitable, and the inflow and retention of water from the cover plate to the bowl-shaped part occurs. The decay of water and the increase in acid concentration in the cocoon-like part cause generation of malodor and corrosion of rehabilitation pipes.

  The present invention uses a new segment that requires neither a hook-shaped part nor a cover plate for coupling, and adopts a simple structure for coupling each segment in the circumferential direction and length direction, thereby simplifying the assembly means in the inner space of the pipe For buried pipes with excellent water flow function that minimizes the number of bolts and nuts used, minimizes the inner diameter of the rehabilitated pipe relative to the inner diameter of the buried pipe, and has no irregularities on the inner peripheral surface. Rehabilitation tubes are provided.

The rehabilitation pipe of the present invention is, for example, as shown in FIG. 1, a rehabilitation pipe 2 formed by connecting segments 3 obtained by dividing a circular pipe in the circumferential direction in the underground pipe 1 in the circumferential direction and in the length direction. As shown in FIG. 2 , the segment 3 includes a curved inner surface plate 29, an axial flange 16 on both sides in the circumferential direction, and a pair of long bolt holes 21 </ b> R and 21 </ b> L. The flanges 15A and 15B and the height adjusting piece 4 protrude outward, and an insertion plate 30 is fixed to the front end of the inner surface plate 29 on the front outer surface of the inner surface plate 29 via a presser plate 31. protrudes from the front end 29F, the rear end of the inner plate 29, a fitting groove G3 at the rear outer surface of the inner plate 29, the spacer 32 and clamped to form with the pressing plate 33 and inner plate 29, segment 3 mutually In the circumferential direction connection, the shaft bolts 16 on both side edges contact each other and the short bolt 1 Due to the abutting connection, the segments 3 are connected to each other in the front-rear direction by inserting the insertion plate 30 at the front end of the rear segment 3 into the insertion groove G3 at the rear end of the front segment 3 and the rear circumferential flange 15B between the front and rear segments 3. This is a rehabilitating tube in which the inner peripheral surface 2f is formed in a flush contact form with only the inner surface plate 29 of each segment 3 by the coupling of the long bolts 17 via fastening.

Each segment 3 may be of a 4-split type or a 3-split type according to the diameter of the buried pipe 1. If the inner diameter of the buried pipe 1 is 1000 mm or more, it can be carried in from a manhole. It is.
In this case, the ring R of the rehabilitation pipe obtained by connecting the segments 3 in the circumferential direction is a circular pipe having an abutting contact form in which the inner peripheral surface is only the inner surface plate 29, and the ring R of the rehabilitation pipe has a length. The inner peripheral surface of the rehabilitated pipe 2 connected in the direction provides a pipe surface in which only the inner surface plate 29 of each segment 3 has no step in the circumferential direction and the length direction and abuts against each other, and has an excellent flowing water function. Rehabilitation pipe.
Further, the shaft flange 16 and the front and rear circumferential flanges 15 </ b> A and 15 </ b> B have a function of reinforcing the segment 3, and the long bolt 17 is effective for imparting strength to the rehabilitated pipe 2.

Therefore, the rehabilitation pipe 2 has sufficient strength, and the inner surface 2f has no separate plate material such as a lid plate of the conventional bowl-shaped portion, and has a flat curved shape with only the inner surface plate 29, The running water in the pipe is smooth.
Moreover, of each segment 3, the circumferential connection segment outer surfaces, the axial flange 16 mutual circumferential side edges in contact can conveniently carried out by binding at short bolts 19, longitudinal connection, fitting plate 30 because it can be achieved by fitting into the insertion groove G3 of 30 and passing the long bolt 17 through the circumferential flanges 15A, 15B and fastening the bolts and nuts via the rear circumferential flange 15B between the front and rear segments 3. Depending on the number of fastening bolts, the work at the rear end of the outer periphery of the segment 3 is simple.
Further, in the rehabilitation pipe 2 of the present invention, as shown in FIG. 3, the fitting plate 30 is fixed to the front outer surface of the inner surface plate 29 via the presser plate 31 and protrudes from the inner surface plate front end 29F. The insertion groove G <b> 3 is formed by the presser plate 33 and the inner surface plate 29 with a spacer 32 sandwiched between the rear outer surfaces of the inner surface plate 29 .
In this case, if the spacer 32 employs a plate material having the same thickness as or slightly thicker than that of the insertion plate 30, the fitting groove G3 of the insertion plate 30 can be easily formed .
Then, as shown in FIG. 4, the insertion of the insertion plate 30 into the insertion groove G3 regulates the flushness of the inner surface plate 29 in the tube radial direction, and the abutting contact position regulation of the inner surface plate 29 between the front and rear segments 3 is The front end 29F and the rear end 29B of the inner surface plate .
Therefore, by appropriately selecting the insertion plate 30 and the spacer 32, it is easy to form the insertion plate 30 and the insertion groove G3 in a desired form, and the insertion plate 30 has a protrusion length d5 and a depth of the insertion groove G3. If the width W30 is shallower than the width d6 and the width W30 is narrower than the width W29 of the inner surface plate 29, the mutual insertion operation of the segments 3 can be carried out in the abutting contact form of the inner surface plate 29 alone .
Of course, the longitudinal bolt 17 bears the strength of the front and rear coupling between the segments 3, the circumferential coupling strength bears the coupling between the shaft flanges 16, and the insertion plate 30 merely serves as a guide for insertion fitting. Therefore, even if it is narrower than the width of the insertion groove G3 in production, or even if it is a narrow divided insertion plate, there is no problem in the front-rear and left-right coupling strength of the rehabilitation pipe 2 .

Since the front and rear segments 3 are fitted and connected to each other, a conventional connecting hook-like portion is not necessary, and the bolt fastening operation of the front and rear and left and right of the segments 3 is performed within the conventional concave portion of the hook-like portion. The number of tightening bolts used is greatly reduced compared to the circumferential coupling between the segments and the connecting operation in the front-rear direction, and all bolt tightening operations can be performed in an open area. It becomes easy work and workability is greatly improved.
Moreover, unlike the conventional rehabilitating pipe bowl-like portion, there is no invasion or staying of flowing water on the inner peripheral surface of the rehabilitating pipe 2, so there is no generation of malodor and rehabilitation pipe corrosion due to the staying water.

Further, the rehabilitated tube 2 of the present invention is a long bolt in which the fastening connection with the long bolts 17 in the longitudinal direction (length direction) of the segments 3 extends rearward from the rear circumferential flange 15B of the front segment 3. 17 is carried out by fastening connection to the rear circumferential flange 15B penetrating the circumferential flanges 15A, 15B of the rear segment 3.
In this case, since there are two pairs of bolt holes 21R and 21L in the front and rear circumferential flanges 15A and 15B of the segment 3, the two bolt holes 21 of the rear circumferential flange 15B are tightened at the ends of the long bolts. It can be properly used for wearing and fastening at the rear end.
And since the long volt | bolt 17 fastens between each rear circumferential flange 15B of the front-back segment 3, the big front-back connection strength of the renovated pipe 2 is obtained by selecting the arrangement position of the long volt | bolt 17. .

Further, in the rehabilitated pipe 2 of the present invention, as shown in FIG. 2, the round pipe 9 is penetrated and fixed between the front and rear circumferential flanges 15A and 15B, and as shown in FIG. It is particularly preferable that the extended long bolt 17 is inserted into the round pipe 9 of the rear segment 3 and fastened to the rear circumferential flange 15B of the rear segment 3.
In this case, since the long bolt 17 is inserted into the bolt hole 21 of the rear circumferential flange 15B through insertion into the round pipe 9, the long bolt 17 is fitted and fastened to the rear circumferential flange 15B. Work is smooth.
In addition, since the round pipe 9 is fixed to the front and rear circumferential flanges 15A and 15B, the function of improving the strength of the segment 3 is also achieved.

Further, as shown in FIG. 2, the round pipe 9 preferably protrudes from the rear circumferential flange 15B through the front circumferential flange 15A and is integrally fixed to the front and rear circumferential flanges 15A and 15B.
In this case, since the round pipe 9 performs the covering protection function of the long bolt 17, the front end 9 </ b> F may abut the rear circumferential flange 15 </ b> B of the front segment 3. Care should be taken not to interfere with the mutual abutment of the inner surface plates 29.
However, if the projecting portion P9 extends forward so that the front end 9F of the round pipe 9 forms a gap of about 1 mm with the rear surface of the rear circumferential flange 15B of the front segment 3, the presence of the round pipe 9 is Without interfering with the contact of the inner surface plates 29 of the segments 3 with each other, the tightening limit of the long bolt 17 is defined, and the bending deformation of the rear circumferential flange 15B due to excessive tightening of the long bolt 17 can be prevented.

  Therefore, the projecting form of the front end 9F of the round pipe 9 from the front circumferential flange 15A facilitates the fitting and fixing operation of the round pipe 9 into the bolt holes 21R and 21L of the front and rear circumferential flanges 15A and 15B. Since the front end of 9 projects, the rear end 17B of the long bolt projecting rearward from the front segment 3 can be easily inserted into the front end 9F of the round pipe. The fitting into the peripheral flange 15B and the nut 18 fastening operation are facilitated.

In the rehabilitated pipe 2 of the present invention, as shown in FIG. 1, the height adjusting piece 4 arranged on the outer surface of the segment 3 defines the gap GS between each segment 3 and the buried pipe 1, and the segment outer surface 3f It is preferable to fill and integrate the gap GS with the buried pipe inner surface 1f with the backfill material CM.
In this case, the circumferential flanges 15A and 15B, and the shaft flange 16 have the function of reinforcing the segment 3, and the flanges 15A, 15B and 16 obstruct flow spreading of the backfill material CM. The protrusion height h4 of the height adjusting piece 4 is preferably adjusted to be higher than the flanges 15A, 15B, and 16.
Further, the backfill material CM is hardened by injection filling and is typically cement mortar.

  Accordingly, by appropriately setting the height h4 of the height adjusting piece 4, the rehabilitating pipe 2 can maintain the set strength of the flanges 15A, 15B, 16 and the inner circumference of the buried pipe 1 and the backfill material CM. The height h4 of the height adjustment piece 4 is slightly larger than the height h5 of the circumferential flanges 15A and 15B and the height h16 of the shaft flange 16, and the arrangement of the inlet 5 to the segment 3 is as follows. For example, by properly arranging the top of the ring R so that the backfilling material CM can be filled in the entire outer peripheral surface 3f of each segment 3, the rehabilitation pipe 2 can be placed within the buried pipe 1 in a rehabilitated manner with respect to the buried pipe inner diameter 1D. It is also possible to place the pipe with the reduced diameter of the pipe inner diameter 2D as much as possible, and it is also possible to arrange the rehabilitated pipe with a smaller diameter than that of the buried pipe in the conventional example (Figs. 7 and 8). Thus, the degree of freedom of diameter reduction is also improved.

As shown in FIG. 2, the rehabilitation pipe 2 is formed by inserting a fitting plate 30 on the outer surface of the front end of the inner plate 29 having a curved shape obtained by dividing the circular tube in the circumferential direction , and pressing the outer plate on the front outer surface of the inner plate 29. It is fixed via the plate 31 and protrudes from the front end 29F of the inner surface plate. The insertion groove G3 is formed on the outer surface of the rear end , and the spacer 32 is sandwiched between the rear outer surface of the inner surface plate 29 and the presser plate 33 and the inner surface plate 29. The front circumferential flange 15A and the rear circumferential flange 15B are provided on the outer surface side of the inner surface plate 29 and are provided with axial flanges 16 on both circumferential edges and two pairs of long bolt holes 21R and 21L. And a segment 3 having a round pipe 9 penetrating between the front and rear circumferential flanges 15A and 15B, and a first rehabilitating pipe ring R1 as shown in FIG. While contacting the segment 3 in the circumferential direction, It is formed by fastening the short bolt 19 to the rear bolt hole 22, and each ring R after the second ring R2 is formed in the front-rear connection by inserting the rear segment 3 into the fitting groove G3 of the front segment 3. Insertion of the insertion plate 30 and fastening to the rear circumferential flange 15B through the round pipe 9 of the rear segment 3 of the long bolt 17 protruding rearward from the rear circumferential flange 15B of the front segment 3 In the circumferential connection, the short bolts 19 are fastened to the bolt holes 22 at the rear portions of the contact shaft flanges 16 of the segments 3.

In this case, two long bolts 17 per segment 3 are sufficient as shown in FIG.
Since the long bolt holes 21R and 21L are paired, the long bolt 17 uses one bolt hole 21L of the rear circumferential flange 15B for bolt fastening of the long bolt rear end 17B and the other bolt hole 21R. Is used for fastening the long bolt front end 17F, and the work is performed near the rear circumferential flange 15B, so that the workability is good, and on the rear circumferential flange 15B, the front of the long bolt rear end 17B is forwarded. Since the point of application of the tensile stress and the point of action of the tensile stress behind the long bolt front end 17F are close to each other, the curved deformation of the rear circumferential flange 15B can be minimized.

Therefore, according to the present invention, formation of the ring R by the circular circumferential connection of the segments 3 Mutual is a shaft flange 16 mutual circumferential side edges is only fastening at short bolts 19 abut, Each segment 3 can be connected to each other in the front-rear direction only by fastening with two long bolts 17, so the number of bolts and nuts used can be greatly reduced compared to the conventional example (FIGS. 7 and 8). And since it becomes a bolt nut fastening operation | work in the open | release area | region of the outer peripheral rear end part of the segment 3, workability | operativity improves significantly from a conventional system (FIG. 7, FIG. 8).

In addition, since the connecting means between the segments 3 in the front-rear direction is implemented by insertion-type fitting of the fitting plate 30 and the fitting groove G3 on the outer surface side of the inner surface plate 29, the inner edge plate 29 is connected to the end edges of the inner surface plate 29. And the inner peripheral surface 2f of the rehabilitating pipe 2 are in the form of mutual abutment with only the inner surface plate 29 having a curved and smooth surface and are excellent in flushing function. It becomes.
In addition, since the shaft flange 16 and the front and rear circumferential flanges 15A and 15B have a reinforcing rib function and the round pipe 9 also exhibits a reinforcing function, a strong rehabilitation pipe can be formed with high efficiency.
In this case, as shown in FIG. 4, the fitting of the fitting plate 30 into the fitting groove G3 regulates the flushing of the inner surface plate 29 in the tube radial direction and restricts the abutting contact position of the inner surface plate 29 between the front and rear segments 3. These are the front end 29F and the rear end 29B of the inner surface plate .
Therefore, by appropriately selecting the insertion plate 30 and the spacer 32, it is easy to form the insertion plate 30 and the insertion groove G3 in a desired form, and the insertion plate 30 has a protrusion length d5 and a depth of the insertion groove G3. If the width W30 is shallower than the width d6 and the width W30 is narrower than the width W29 of the inner surface plate 29, the mutual insertion operation of the segments 3 can be carried out in the abutting contact form of the inner surface plate 29 alone .
Of course, the longitudinal bolt 17 bears the strength of the front and rear coupling between the segments 3, the circumferential coupling strength bears the coupling between the shaft flanges 16, and the insertion plate 30 merely serves as a guide for insertion fitting. Therefore, even if it is narrower than the width of the insertion groove G3 in production, or even if it is a narrow divided insertion plate, there is no problem in the front-rear and left-right coupling strength of the rehabilitation pipe 2 .

Further, in the invention of the rehabilitation pipe forming method, as shown in FIG. 1, the front circumferential flange 15A and the rear circumferential flange 15B are provided with two pairs of bolt holes 21R and 21L at respective corresponding positions. A round pipe 9 is disposed in one of the bolt holes 21R and 21L to be used for penetration and fastening of the long bolt 17 from the front segment 3, and the other is a long length from the rear circumferential flange 15B to the rear. It is particularly advantageous to use it for projecting the bolt 17.
In this case, the protrusion of the long bolt 17 from the rear circumferential flange 15B may be secured to the front end 17F of the long bolt 17 with a nut 18 on the front side of the rear circumferential flange 15B, as shown in FIG.
Further, as shown in FIG. 1, the fastening of the long bolt 17 from the front segment 3 to the rear segment 3 passes through the round pipe 9 of the rear segment 3 so that the rear end 17B is connected to the rear surface of the rear circumferential flange 15B. What is necessary is just to make it project to the side and fasten with the nut 18.

  Accordingly, by arranging two pairs of equally spaced bolt holes 21R and 21L in the front circumferential flange 15A and the rear circumferential flange 15B of all the segments 3, the front and rear circumferential flanges 15A and 15L of the round pipe 9 are arranged. 15B penetrating and fixing, fixing the front end 17F to the rear circumferential flange 15B of the front segment 3 of the long bolt 17, and rear end to the rear circumferential flange 15B of the rear segment 3 by passing the long bolt 17 through the round pipe 9 As shown in FIG. 1, 17B nut fastening can be easily implemented by staggered arrangement of shaft flanges 16 for each ring R by using two pairs of bolt holes 21R and 21L alternately. Due to the distributed arrangement of the shaft flanges 16, the entire rehabilitation pipe 2 can be made uniform.

Further, in the segment used for the rehabilitation pipe forming method, the round pipe 9 of the segment 3 has the rear end 9B joined to the long bolt hole 21R (21L) of the rear circumferential flange 15B and the front end 9F is joined to the front circle. It is advantageous to protrude through the long bolt hole 21R (21L) of the circumferential flange 15A and to be welded to the front and rear circumferential flanges 15A and 15B.
In this case, the round pipe 9 functions to reinforce the front and rear circumferential flanges 15A and 15B, and is useful for increasing the strength of the rehabilitated pipe 2. At the time of joining the front and rear segments, the round pipe 9 is connected to the round pipe 9 from the front circumferential flange 15A. The protruding front end 9F facilitates the work of inserting each long bolt rear end 17B into the round pipe 9.

Further, as shown in FIG. 3, the segment 3 used in the rehabilitation pipe forming method of the present invention has the front circumferential flange 15A standing upright from the front end 29F of the inner surface plate 29 with a distance LF, and the rear circumferential flange 15B. The front and rear circumferential flanges 15 </ b> A and 15 </ b> B are integrally fixed to the shaft flange 16 while maintaining a distance LB from the rear end 29 </ b> B of the inner surface plate, and the fitting plate 30 is protruded from the outer surface front end of the inner surface plate 29 by the presser plate 31. The insertion groove G3 is preferably provided at the rear end of the outer surface of the inner surface plate 29 by a presser plate 33 with a spacer 32 interposed therebetween.
In this case, the spacer 32, the pressing plates 31 and 33, and the fitting plate 30 are all curved surface plates similar to the inner surface plate 29.

As shown in FIG. 4, the rear circumferential flange 15B of the front segment 3 and the front circumferential flange 15A of the rear segment 3 form the front and rear fitting portions 6 of the segment 3, and are typically spaced apart. LF is the width of the presser plate 31 (standard: 40 mm), the interval LB is the width of the presser plate 33 (standard: 80 mm), and the projecting portion P9 of the round pipe 9 is LB + LF, the round pipe front end 9F Will contact the surface of the rear circumferential flange 15B.
However, since the abutting abutment of the front and rear segments should be defined only at the rear end 29B and the front end 29F of the inner surface plate 29, the protrusion P9 of the round pipe 9 is substantially the inner part of the front and rear segments 3 and 3. If the dimensions are selected so as not to interfere with the abutting contact between the face plates 29, and the projecting dimension d5 of the fitting plate 30 is selected to be slightly smaller than the depth d6 of the fitting groove G3 (d5 ≦ d6), the construction is appropriate. And it becomes easy.

Therefore, as shown in FIG. 4, since the insertion groove G3 exists as a free end in the region of the interval LB outside the rear circumferential flange 15B, the insertion work of the insertion plate 30 protruding as the free end is facilitated.
In addition, both the outer region (interval LB) of the circumferential flange 15B and the outer region (interval LF) of the circumferential flange 15A constituting the fitting part 6 between the front and rear segments are the same as the laminated reinforcement form of the inner surface plate 29. The fitting portion 6 having a sufficient strength and having a width L6 (interval LB + interval LF) is fastened in the circumferential direction by a short bolt 19 at an interval LB between the rear ends of the shaft flanges 16 of the left and right segments 3, and The longitudinal connection between the rear circumferential flanges 15B and 15B of the front and rear segments 3 by the long bolts 17 provides sufficient connection strength as the rehabilitation pipe 2.

Further, in the rehabilitation pipe forming method of the present invention, the segment 3 is formed by adjusting the height adjusting piece 4 to form a ring R by circumferential coupling, and the fitting 3 disposed at an appropriate position of the segment 3. The backfill material CM is preferably filled into the gap GS between the segment outer surface 3f and the buried pipe inner surface 1f from the injection hole 5.
As shown in FIG. 1, the height adjusting pieces 4 need to be arranged in each segment 3, but the fittings 10 are provided, for example, every other ring R from the filling work surface of the backfill material CM. What is necessary is just to arrange one place etc. in the segment 3 of ring R upper part.

In this case, the height adjusting piece 4 is typically an adjusting bolt 13 and a support fitting 14 with a female thread, as shown in FIG. 2, and the support fitting 14 is installed upright on the outer surface of the inner surface plate 29. The fitting 10 may be formed by punching an injection hole (not shown) in the inner surface plate 29, aligning the injection hole and the injection port 5, and welding and fixing them on the outer surface of the inner surface plate 29.
The backfill material CM is typically cement mortar.
Therefore, each segment 3 can maintain the gap between the outer surface 3f of each segment and the inner surface 1f of the buried pipe uniformly by adjusting the height adjusting piece 4, and can uniformly fill the outer periphery of the rehabilitating pipe 2 with the backfill material CM. By uniformly filling and solidifying the backfill material CM, the new rehabilitated pipe 2 can be uniformly integrated and fixed to the buried pipe 1.

In the rehabilitation pipe forming method of the present invention, the long bolt 17 is fastened to the front end 17F by the nut 18 on the front surface of the rear circumferential flange 15B of the front segment 3, and the round pipe 9 of the rear segment 3 is secured. The rear end 17B is preferably fastened by a nut 18 on the rear surface of the rear circumferential flange 15B.
In this case, before connecting and connecting each segment 3, as shown in FIG. 4, the front end 17F of the long bolt 17 is preliminarily attached to one bolt hole 22 of the pair of bolt holes 22 of the rear circumferential flange 15B. The long bolt 17 is extended rearward from the rear circumferential flange 15B by screwing onto a nut 18 welded and fixed to the front side.

Therefore, as shown in FIG. 1, the connecting operation of the rear segment 3 to the segment 3 of the existing ring R is performed by fitting each round pipe 9 of the rear segment 3 to the rear end 17B of each extended long bolt 17 in the protruding form. Then, the rear segment 3 is moved forward, and the rear segment insertion plate 30 is inserted into the front segment insertion groove G3 at the final position. By screwing the nut 18 to the rear end 17B protruding from the rear surface of the peripheral flange 15B, the front and rear segments 3 can be firmly coupled to each other.
Accordingly, the connecting and connecting operations in the front-rear direction between the segments 3 can be easily and easily performed in a narrow space in the buried pipe 1.

The rehabilitating pipe 2 of the present invention is the rehabilitating pipe 2 in which the inner peripheral surface 2f is in contact with each other in the circumferential direction and the front-rear direction of only the inner surface plate 29 of each segment 3, and thus has an excellent flowing water function. It becomes a rehabilitation pipe.
Further, the shaft flange 16 and the front and rear circumferential flanges 15A and 15B have a function of connecting the segments 3 to each other and a function of reinforcing ribs of the segments 3 to firmly connect the long bolts 17 that connect the front and rear segments to each other. In combination with this, a rehabilitation pipe having sufficient strength, smooth inner peripheral surface and excellent flowability can be obtained.

  Moreover, the circumferential direction connection of each segment 3 can be simply implemented by the shaft flange 16, and the length direction connection is performed by fitting the fitting plate 30 into the fitting groove G3 and the circumferential flanges 15A and 15B of the long bolt 17. Can be achieved by tightening the bolts and nuts that penetrate the bolts, so that it can be formed by a smaller number of fastening bolts and simple work at the rear end of the outer periphery of the segment 3 compared to the conventional rehabilitation pipe (FIGS. 7 and 8). Rehabilitation pipes with excellent workability can be provided.

  Further, since the front and rear segments 3 are fitted and connected to each other, it is not necessary to arrange a connection and coupling region such as a conventional hook-shaped portion on the inner surface of the inner surface plate 29, and the conventional rehabilitation pipe (FIGS. 7 and 8). Workability of connection and connection is further improved, and the inner surface of the rehabilitating pipe 2 does not have any invasion or staying part of the flowing water like the conventional bowl-shaped part. This is a rehabilitation pipe with excellent water flow and durability.

Further, according to the rehabilitation pipe forming method of the present invention, the segments 3 are connected to each other in the front-rear direction by a fitting plate 30 along the outer surface of the inner surface plate 29 at the front end and a fitting along the outer surface of the inner surface plate 29 at the rear end. Since it becomes implementation by insertion fitting with the groove | channel G3, the workability | operativity of the front-back direction connection improves markedly compared with the connection work in the conventional hook-shaped part.
And the inner peripheral surface of the rehabilitation pipe | tube 2 becomes a mutual contact | abutting contact form only of the inner surface board 29 of a curved smooth surface, and the rehabilitation pipe | tube 2 excellent in the flowing water function can be formed.
In addition, the shaft flange 16 and the front and rear circumferential flanges 15A and 15B on the outer surface side of the inner surface plate 29 have a reinforcing rib function, and the round pipe 9 also exhibits a reinforcing function. Combined with wearing, a strong rehabilitation tube can be formed with high efficiency.

In the present embodiment, as shown in FIG. 1, the laying of the rehabilitating pipe 2 having an inner diameter 2D of 1530 mm with respect to the buried pipe 1 of the sewer pipe having an inner diameter 1D of 1650 mm will be described in detail.
The rehabilitation pipe 2 carries the segment 3 into which the circular pipe is divided into the buried pipe 1 and connects the segments 3 to each other in the circumferential direction to form a first ring R1. It is constructed in such a manner that the group 3 segments are tangentially joined in the front-rear direction to form the second ring R2.
Therefore, since the segment 3 needs to be carried into the buried pipe 1 from the manhole, the segment 3 for the buried pipe 1 having an inner diameter of 1650 mm according to the present embodiment is implemented by a four-split type.

[Structure of segment 3 (FIGS. 2 and 3)]
As shown in FIGS. 2 and 3, the segment 3 has a curved rectangular flat inner surface plate 29 on the outer surface (surface) 29s side, shaft flanges 16 on both side edges, a front circumferential flange 15A on the front, and a rear portion. The rear circumferential flange 15B is fixed upright, the insertion plate 30 projects from the front end of the inner surface plate 29, and the insertion groove G3 is arranged at the rear end.
The front circumferential flange 15A and the rear circumferential flange 15B are provided with two pairs of bolt holes 21 for the long bolts 17 so as to face each other on the left side and the right side. The bolt hole 22 for fastening the short bolt 19 is disposed at a portion protruding rearward from the rear circumferential flange 15B, and the height adjusting piece 4 is disposed on the outer surface 29s side of the inner surface plate 29.

[Production of segment 3 (FIGS. 2 and 3)]
Since the segment 3 is used in an environment where hydrogen sulfide is generated and the metal is easily corroded, such as a sewer pipe, JIS, SUS304, which is excellent in chemical resistance of stainless steel, is adopted as a constituent material.
The inner surface plate 29 is a square arc flat plate having a thickness of 2 mm, a length L29 of 500 mm, and a width W29 having an inner diameter of 1530 mm and a quadruple arc width.

  Further, on the outer surface (surface) 29s side of the inner surface plate 29, as shown in FIG. 3, shaft flanges 16 having a height h16 of 50 mm and a thickness of 3 mm are arranged on both side edges, and the front end is aligned with the front end of the inner surface plate 29. At the rear end, the rear part of the inner surface plate is welded and fixed in an upright form with a protruding length d6 (standard: 40 mm), and between the shaft flanges 16 on both sides, the height h15 is 50 mm and the thickness is 3 mm. The front and rear circumferential flanges 15A and 15B provided with two pairs of long bolt holes 21R and 21L, and the front circumferential flange 15A project the inner plate front end 29F by a length LF (standard: 40 mm), and the rear circumference. The flange 15B is welded and fixed to the shaft flange 16 and the surface of the inner surface plate in an upright form in a form in which the rear end 29B of the inner surface plate protrudes by a length LB (standard: 80 mm).

Further, on the front outer surface of the front circumferential flange 15A of the inner surface plate 29, as shown in FIG. 3A, an insertion plate 30 having a thickness of 4 mm and a width of 80 mm, and a presser plate 31 having a thickness of 3 mm and a width of 40 mm are provided. Is placed in contact with the front surface of the front circumferential flange 15A in a laminated form and fixed by spot welding so that the insertion plate 30 protrudes from the front end of the inner surface plate 29F and the front end of the presser plate 31 by a length d5 (standard: 40 mm). .
Further, a presser plate 33 having a thickness of 3 mm and a width (LB) of 80 mm is interposed on the outer surface of the rear surface of the rear circumferential flange 15B of the inner surface plate 29 with a spacer 32 of a curved plate material having a thickness of 4 mm and a width of 40 mm. Is fixed to the rear circumferential flange 15B and the inner surface plate 29 by spot welding, and a fitting groove G3 having a depth d6 (standard: 40 mm) is formed in the gap between the inner surface plate 29 and the presser plate 33.

Further, as shown in FIG. 2A, the front and rear circumferential flanges 15A and 15B are each provided with two pairs of right long bolt holes 21R and left long bolt holes 21L as long bolt holes. The intermediate line CL between the hole cores Oc of 21L is located at two locations that are ¼ of the inner plate width W29 from the shaft flanges 16 on both sides, that is, for each segment, from the shaft flanges 16 on both sides. Two intermediate lines CL are arranged in a form using a half width of the segment 3 width at an inner position of 1/4 width of the width, and the right side of the pair of long bolt holes 21R, 21L Only in the long bolt hole 21R, the segment 3R group in which two round pipes 9 are fitted and fixed at intervals of ½ dimension of the segment width W29, and only in the left long bolt hole 21L, 1 / of the segment width W29. 2 round pipes at 2 dimension intervals The prepared two types of the force-fit segments 3L.
Then, in each of the segments 3R and 3L, the long bolt hole 21R (21L) in which the round pipe 9 of the rear circumferential flange 15B is not mounted is shown on the front surface of the rear circumferential flange 15B as shown in FIG. As described above, the nut 18 is fixed by welding (MP).

The segment 3R and the segment 3L differ only in the arrangement position of the round pipe 9, and the round pipe 9 is fitted and fixed to the long bolt holes 21R and 21L as shown in FIG. 3 (A). , Penetrate the long bolt hole 21R (21L) of the front circumferential flange 15A, align the rear end 9B with the long bolt hole 21R (21L) and contact the rear circumferential flange 15B, or the bolt hole 21R (21L), the round pipe 9 for inserting the long bolt 17 can be obtained by welding (MP) the outer circumference of the round pipe 9 to each of the circumferential flanges 15A and 15B with the front end 9F protruding forward. The front and rear circumferential flanges 15A and 15B are rigidly integrated and fixed.
In the standard specification, the round pipe 9 has an outer diameter of 17.3 mm, a wall thickness of 2 mm, and a length of 496 mm, and is in a state before the long bolt 17 is tightened by abutting the front and rear segments. Then, the round pipe front end 9F has a length with the rear surface of the front segment 15B and a bolt clamping allowance of 1 mm, the diameters of the long bolt holes 21R and 21L are 18 mm, and the dimension between the hole cores Oc is 30 mm.

Further, as shown in FIG. 1, the adjusting bolt 13 is screwed onto the outer surface 29s of the inner surface plate 29 in the vicinity of the rear circumferential flange 15B and in the vicinity of the shaft flange 16 in both the segments 3R and 3L. Two support brackets 14 with female threads are welded up per segment.
Moreover, the injection port 5 is arrange | positioned to every other ring R of each ring R of the rehabilitation pipe | tube 2, and it is one in four of the segments 3R so that backfill materials, such as cement mortar, can be inject | poured from this injection port 5. Alternatively, as shown in FIG. 1, the fitting 10 having the injection port 5 is aligned with the injection opening (not shown) of the inner surface plate 29 at a ratio of one in four of the segments 3L. A segment 3R (3L) for injecting the backfill material CM is prepared by welding and fixing to the 29s side.

[Laying the rehabilitation pipe (Fig. 1)]
The first ring R1, that is, the ring R1 at the foremost end of the rehabilitation pipe 2, is laid rearward from the rear circumferential flange 15B in the portion of the shaft flange 16 of the segment 3L that protrudes forward from the front circumferential flange 15A. Bolt holes 22 similar to the protruding portions are drilled, and as shown in FIG. 5, the shaft flanges 16 on both sides of each segment 3L are brought into contact with each other, and the shaft flanges 16 are firmly fastened to each other by the short bolts 19 and nuts 20. Then, the first ring R1 is formed.
In this case, the fastening operation of the short bolt 19 on the front side of the front circumferential flange 15A may be performed by an operator entering the front side of the first ring R1.

In the segment 3 for the first ring R1, the portion protruding forward from the front circumferential flange 15A of the round pipe 9 may be cut off as it is.
Further, the round pipe 9 in the first ring R1 merely functions as a reinforcing bar for the front and rear circumferential flanges 15A and 15B, but a pair of long bolt holes 21R for each segment 3L constituting the first ring R1. , 21L, the nut 18 is fixed to the front surface of the front circumferential flange 15A in the long bolt hole 21R of the rear circumferential flange 15B adjacent to the mounting position of the round pipe 9 as shown in FIG. Each segment 3 has a long bolt 17 (standard: outer diameter 10 mm, length 535 mm) front end 17F screwed and fixed to the nut 18 in advance, and the long bolt 17 extends backward from the rear circumferential flange 15B. The first ring R1 is formed in the extended state.

Next, as shown in FIG. 1, the second ring R2 is formed using the segment 3R group when the first ring R1 is formed of the segment 3L.
That is, the segment 3 is connected in the front-rear direction by connecting the round pipe 9 to the left long bolt hole 21L and extending the long bolt 17 rearward from the right long bolt hole 21R. If the round pipe 9 is attached to the right long bolt hole 21R as the rear segment 3 and the long bolt 17 is extended rearward from the left long bolt hole 21L, the first ring is used. As shown in FIG. 4 (A), the rear segment 3R is advanced to the long bolt 17 extending from each segment 3L of R1, and the round pipe 9 is inserted and advanced.

Then, the insertion plate 30 at the front end of the rear segment 3R is inserted into the insertion groove G3 at the rear end of the front segment 3L, and the inner surface plate rear end 29B of the front segment and the rear segment inner surface plate front end 29F are brought into contact with each other. 1, the rear end 17B of the long bolt 17 of the front segment 3L protruding through the round pipe 9 of the rear segment 3R and projecting to the rear surface of the rear circumferential flange 15B is screwed with a nut 18 as shown in FIG. Fastened to the rear surface of 15B.
In the state where the rear end 29B of the front segment and the front end 29F of the rear segment abut against each other without a gap, the front end 9F of the projecting portion P9 of the round pipe is connected to the rear circumferential flange 15B of the front segment. Although there is a gap of about 1 mm with respect to the rear surface, the long bolt 17 is tightened until the round pipe front end 9F contacts the rear surface of the rear circumferential flange 15B.

  Accordingly, the long bolt 17 is secured by the nut 18 whose front end 17F is welded and fixed to the front surface of the rear circumferential flange 15B of the front segment 3L, and the rear end 17B is nut 18 on the rear surface of the rear circumferential flange 15B of the rear segment 3R. And the rear circumferential flange 15B of the front segment 3L and the rear circumferential flange 15B of the rear segment 3R are secured tightly. At the same time, the round pipe 9 is connected to the rear circle by excessive tightening of the long bolts 17. The curved deformation of the circumferential flange 15B is prevented, and the support bar function between the front and rear rear circumferential flanges 15B is exerted to reinforce the rehabilitation pipe 2.

Then, as shown in FIG. 6, every time the rear segments 3R are connected to the front segments 3L in the front-rear direction, the rear segments 3R are brought into contact with the shaft flanges 16 to the bolt holes 22 at the rear of the shaft flanges. The short bolt 19 and the nut 20 are screwed together to form a second ring R2 at the rear of the first ring R1.
Thereafter, the subsequent ring R is sequentially connected and integrated to form a rehabilitation pipe having a necessary length, and the last ring R may be formed by the segment 3 to which the long bolt 17 is not attached.
In connecting the segments 3L and 3R, the adjustment bolts 13 of the height adjusting pieces 4 at the rear of the segments may be connected sequentially while being manually adjusted.

Moreover, the segment 3 provided with the inlet 5 is applied as an upper component segment of the ring R every other front and rear of each ring R.
And if the rehabilitation pipe | tube which each ring R connected can be formed, an injection hose (not shown) will be connected from the inside of the rehabilitation pipe | tube 2 to the injection port 5 arrange | positioned in the right place, and cement mortar will be inserted between the segment outer surface 3f and embedding. The injection flange 5 is filled and solidified in the gap between the inner surface 1f, the injection port 5 is flush with the inner surface of the segment inner surface plate 29, and is closed with an embedded bolt (not shown) or the like. A curable synthetic resin liquid (standard: silicon solution) is applied to the contact lines of the inner surface 29 and the contact contact lines of the front, rear, left and right of the inner surface plate 29.

  In the construction of the rehabilitated pipe of the present invention, when forming one ring R, the number of bolts to be used is eight long bolts 17 connected to the front and rear segments 3 and two for each segment. The short bolts 19 for connection are the use of four at the rear part of the shaft flanges 16 of the four segments 3, and the conventional example (FIGS. 7 and 8) has two hook-like portions per segment, Fastening bolts at the two left and right sides of the outer rib wall in the front-rear direction of each hook-shaped part, bolting at the two front and rear ends of the flange of the mutual segment, and two lid plates of the front and rear hook-like parts The bolt and nut fastening can be remarkably streamlined compared to the fastening with a flat head screw at each of two locations.

Moreover, compared with the conventional complicated and difficult fastening operation in the narrow recess of the bowl-shaped part, the present invention adopts the front and rear segments as a fitting form, and fastening at the open part at the rear end of each segment. Since this is an operation, the connecting and connecting operation by the bolts and nuts in the left and right direction and the front and rear direction between the segments is much easier than the conventional one, and the workability is greatly improved.
And the rehabilitation pipe | tube 2 of this invention becomes the surface contact | abutting contact | abutting which only an inner peripheral surface has only an inner surface board, and becomes excellent in water flow.

It is a whole perspective view of the present rehabilitation pipe. It is explanatory drawing of the segment used for this invention, Comprising: (A) is an outer surface perspective view, (B) is an inner surface perspective view. It is explanatory drawing of the segment used for this invention, Comprising: (A) is the AA line view of FIG. 2 (A), (B) is the BB line view of FIG. 2 (A), (C ) Is a C-C line view of FIG. 2A, (D) is a DD line view of FIG. 2A, and (E) is an EE line view of FIG. 2A. FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is segment coupling | bonding explanatory drawing of this invention, Comprising: (A) is sectional drawing just before the fitting of the front-back segment, (B) is sectional drawing of the coupling | bonding state of front-back segments, (C) is a circumference | surroundings with each other. FIG. 6 is a side view of a ring coupled in a direction. It is a 1st ring schematic explanatory drawing of this invention, Comprising: (A) is a front view, (B) is a BB view side view of (A). It is 2nd ring formation explanatory drawing of this invention, Comprising: (A) is a fitting state figure of the segment to a 1st ring, (B) is a state figure which connected the 2nd ring to the 1st ring, ( (C) is a CC line view of (B). It is a prior art figure, (A) is an exploded perspective view of a segment, (B) is a partially cutaway side view of a segment, (C) is an inner surface view of a segment. It is a prior art example, (A) is a cross-sectional view of the rehabilitation pipe, (B) is a longitudinal cross-sectional view of the front and rear connecting portions of the segments, and (C) is a cross-sectional view for explaining the relationship between the bowl-shaped portion and the cover plate. .

Explanation of symbols

1 Buried pipes 1f, 2f Inner peripheral surface (inner surface)
2 Rehabilitation tube 3, 3L, 3R Segment 3f Segment surface (outer surface)
4 Height adjustment piece 5 Inlet 6 Fitting part 9 Round pipe 9B Round pipe rear end (rear end)
9F Round pipe front end (front end)
10 Fittings 13 Adjustment bolts 14 Support bracket with female thread (support piece)
15A Front circumferential flange (circumferential flange)
15B Rear circumferential flange (circumferential flange)
16 Shaft flange 17 Long bolt 17B Long bolt rear end (rear end)
17F Long bolt front end (front end)
18, 20 Nut 19 Short bolt 21, 21, R, 21L Long bolt hole (bolt hole)
22 Bolt hole 29 inner surface plate 29B inner surface plate rear end (rear end)
29F Inner plate front end (front end)
29s inner surface plate surface (outer surface)
30 Insertion plate 31, 33 Presser plate 32 Spacer
CM Backfill material G3 Insertion groove GS Gap LB, LF Interval MP Welding Oc Core P9 Round pipe protrusion (protrusion)
R, R1, R2, R3 ring

Claims (11)

A rehabilitation pipe (2) formed by connecting a segment (3) obtained by dividing a circular pipe in the circumferential direction into a buried pipe (1) in the ground, in the circumferential direction and the length direction, the segment (3) The front and rear circumferential flanges (15A, 15B) provided with a curved flange inner surface plate (29), axial flanges (16) on both sides in the circumferential direction, and a pair of long bolt holes (21R, 21L) The height adjusting piece (4) protrudes outward, and an insertion plate (30) is provided at the front end of the inner surface plate (29), and a front outer surface of the inner surface plate (29) is interposed through a presser plate (31). The inner plate is protruded from the front end (29F), and the inner plate (29) is provided with a fitting groove (G3) on the rear outer surface of the inner plate (29) and a spacer (32). formed out pressing plate (33) inner surface plate (29), segment (3) mutual circumferential connection, both side edges axial flanges ( 6) Due to the abutting connection with the short bolts (19) by abutting each other, the segments (3) are connected in the front-rear direction to the rear segment (3) to the fitting groove (G3) at the rear end of the front segment (3). ) The inner peripheral surface (2f) is connected by the insertion of the insertion plate (30) at the front end and the fastening of the long bolt (17) through the rear circumferential flange (15B) of the front and rear segments (3). A rehabilitated tube in which only the inner surface plate (29) of each segment (3) is flush with the surface.   The rear of the long bolt (17) in which the fastening connection with the long bolt (17) in the longitudinal direction of the segment (3) is extended rearward from the rear circumferential flange (15B) of the front segment (3) Rehabilitation pipe according to claim 1, wherein the rehabilitation pipe is a fastening connection to the circumferential flange (15B) after passing through the circumferential flange (15A, 15B) of the segment (3).   The round pipe (9) is fixed between the front and rear circumferential flanges (15A, 15B), and the long bolt (17) extending rearward of the front segment (3) is connected to the round pipe ( 9) The rehabilitation pipe according to claim 1 or 2, which is inserted into the rear segment (3) and fastened to the rear circumferential flange (15B).   The rehabilitation pipe according to claim 3, wherein the round pipe (9) protrudes from the rear circumferential flange (15B) through the front circumferential flange (15A) and is integrally fixed to the front and rear circumferential flanges (15A, 15B). A height adjusting piece (4) arranged on the outer surface of the segment (3) defines a gap (GS) between each segment (3) and the buried pipe (1), and the segment outer surface (3f) and the buried pipe inner surface (1f). The rehabilitation pipe according to any one of claims 1 to 4 , wherein the gap (GS) is integrated with a backfill material (CM). A fitting plate (30) is fastened to the front outer surface of the inner surface plate (29) via a presser plate (31) on the outer surface of the front end of the curved inner surface plate (29) divided in the circumferential direction. The inner plate is protruded from the front end (29F) , the rear end outer surface is fitted with a fitting groove (G3), and the inner plate (29) is attached to the rear outer surface with a spacer (32). (29), and on the outer surface side of the inner surface plate (29), a shaft flange (16) on both side edges in the circumferential direction and a pair of long bolt holes (21R, 21L) are provided. A segment in which a circumferential flange (15A) and a rear circumferential flange (15B) and a height adjusting piece (4) are erected, and a round pipe (9) is disposed between the front and rear circumferential flanges (15A, 15B). (3) is prepared, and the first rehabilitation pipe ring (R1) is to abut each segment (3) in the circumferential direction. Formed by fastening short bolts (19) to bolt holes (22) before and after each abutment shaft flange (16), and forming each ring (R) after the second ring (R2) In this case, the insertion plate (30) of the rear segment (3) is inserted into the insertion groove (G3) of the front segment (3) and the rear circumferential flange (15B) of the front segment (3) protrudes rearward. This is done by fastening the rear segment (3) of the long bolt (17) through the round pipe (9) to the rear circumferential flange (15B). 3) A method of forming the rehabilitated pipe (2) in the buried pipe (1), which is carried out by fastening the short bolt (19) to the bolt hole (22) at the rear part of the contact shaft flange (16). The front circumferential flange (15A) and the rear circumferential flange (15B) have two pairs of bolt holes (21R, 21L) at corresponding positions, and one of the two pairs of bolt holes (21R, 21L) A round pipe (9) is arranged to be used for the penetration and fastening of the long bolt (17) from the front segment (3), and on the other hand, the long bolt (17) rearward from the rear circumferential flange (15B) ) The method for forming a rehabilitation pipe according to claim 6 , which is used for protrusion. The round pipe (9) of the segment (3) has the rear end (9B) joined to the long bolt holes (21R, 21L) of the rear circumferential flange (15B), and the front end (9F) is joined to the front circumferential flange (15A). through projecting an elongated bolt holes (21R, 21L) of), and the front and rear circumferential flange (15A, 15B) and were welded and fixed, the method of forming the rehabilitating pipe according to claim 6 or 7. In the segment (3), the front circumferential flange (15A) is erected with a distance (LF) from the front end (29F) of the inner surface plate (29), and the rear circumferential flange (15B) is disposed at the rear end of the inner surface plate (29B). ) With a gap (LB) between them, and the front and rear circumferential flanges (15A, 15B) are integrally fixed to the shaft flange (16), and the fitting plate (30) is fixed to the inner plate by the presser plate (31). protrude from the outer surface the tip (29) includes a spacer retainer plate via (32) (33) on the outer surface rear end of the fitting groove (G3) the inner plate (29), any one of claims 6 to 8 The method for forming a rehabilitation pipe according to item 1. The segment (3) is formed by adjusting the height adjusting piece (4) to form a ring (R) by circumferential coupling, and the injection hole (5) of the fitting (10) arranged at a proper position of the segment (3) The method for forming a rehabilitated pipe according to any one of claims 6 to 9 , wherein the backfill material (CM) is filled into a gap (GS) between the segment outer surface (3f) and the buried pipe inner surface (1f). The long bolt (17) is secured to the front end (17F) by a nut (18) on the front surface of the rear circumferential flange (15B) of the front segment (3), and the round pipe (9) of the rear segment (3) The method of forming a rehabilitated pipe according to any one of claims 6 to 10 , wherein the rear end (17B) is fastened by a nut (18) on the rear surface of the rear circumferential flange (15B).

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