JP2006307494A - Reserving facility and infiltration facility for rainwater and filling body for inspection used for these facilities - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inspect the overall situation of the inside of a tank part. <P>SOLUTION: In this reserving/infiltration facilities formed by fillingly stacking filling bodies in longitudinal, lateral, and vertical directions in a tank part formed by digging a ground and covering its upper part, a groove for discharging sediments are formed in its bottom surface. A manhole is installed on the upper surface of the groove at a proper position and the filling body for inspection is disposed on the upper surface of the groove at a proper position so that an inspector or an inspection device can inspect the inside of the facilities from the filling body for inspection by moving in the groove. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is an underground water storage tank for storing and infiltrating rainwater etc. in residential areas, parks, parking lots, factory sites, etc., and easily confirms the status of sediments such as sand, mud and garbage accumulated in the tank The present invention relates to a storage facility such as rainwater that can be used and an infiltration facility, and also relates to a packing for inspection used in these facilities.

  In recent years, most of the ground surface in urban areas is covered with impervious surfaces such as buildings and pavements, so rainwater does not penetrate underground and flows into the lowlands, flooding houses and flooding rivers. It is growing. Also, the amount of water used is increasing year by year, and there is a risk of water shortage if the rainfall at the water source is small. Therefore, as a countermeasure against water, after rainwater is stored for a certain period of time, it is discharged into rivers, etc., or actively infiltrated underground to prevent river flooding due to rainwater, inundation of houses, etc. Rainwater storage facilities and infiltration facilities have been proposed for pumping and using the stored rainwater.

  As such an infiltration facility for rainwater and the like, for example, a “storage and infiltration facility for rainwater” described in Japanese Patent Publication No. 4-26648 is known. This facility digs up the ground to form a tank part, and fills the tank part with a plurality of container-like filling members arranged vertically and horizontally and vertically from the bottom to the vicinity of the ground line. A coating means is applied. However, it can store rainwater, etc., and infiltrate rainwater underground, but deposits such as sand, mud, and dust accumulate on the filling member and the bottom of the tank when used for a long time. .

It is necessary to remove the deposits in order to remove the dirt in the tank part and increase the efficiency of the facility. However, there is a deposit in the “storage and infiltration facility for rainwater” described in Japanese Patent Publication No. 4-26648. It is not considered to get rid of. Japanese Patent Application Laid-Open No. 2000-160606 proposes a rainwater storage device that can remove deposits and is easy to maintain. The “rainwater storage device” having the above-described configuration is formed with a groove for discharging sediment on the bottom surface of the water storage tank, and at least a sprinkling pipe having a plurality of water injection holes between columns of the synthetic resin filling body is provided. Is.
Japanese Patent Publication No. 4-26648 JP 2000-160606 A

  The rainwater storage device is configured to remove deposits removed by spraying water from a water spray pipe by communicating a sediment discharge groove to the bottom of a manhole provided at an end of the water tank. Is. A vacuum hose or the like can be inserted into the manhole to easily remove deposits and perform maintenance easily. However, since the manhole is provided at the end of the water storage tank, the deposit cannot be completely removed on the opposite side, and it is difficult to check the situation after the removal.

Although the inspection is possible because the embodiment in which the inspection window is formed in the manhole is shown, since the inspection is from one side, it is difficult to confirm the entire state after the removal.
The present invention has been made in view of the present situation, and it is possible to easily remove the deposits accumulated in the filling body and the water storage tank, and to easily confirm the situation after the removal, The object is to provide rainwater storage facilities and infiltration facilities with high water storage efficiency.

  The present invention has the following configuration in order to achieve the above object. That is, the rainwater storage facility and the permeation facility according to the present invention are the storage of rainwater and the like, which are formed by stacking and filling the filling body vertically and horizontally and vertically into the tank portion formed by digging the ground and covering the tank. It is a permeation facility, a groove for discharging deposits is formed on the bottom surface, a manhole is provided at an appropriate position of the groove, and an inspection filler is disposed at an appropriate position located on the upper surface of the groove, and an inspection work is performed. A person or an inspection device moves in the groove so that the inside of the facility can be inspected from the packing for inspection.

  On the upper surface of the groove, except for the positions of the manhole and the inspection filler, a lid for preventing the filler from dropping is fitted, and the filler is preferably stacked on the lid. The bottom of the groove is preferably provided with a gradient and a manhole is provided at the deepest position. Further, the width or depth dimension of the manhole may be a multiple of the width or depth dimension of the inspection filler, and the width, depth or height dimension of the inspection filler may be a multiple of the packing body. preferable.

In addition, the inspection filler used in the rainwater storage facility and infiltration facility according to the present invention is filled by stacking the filler vertically and horizontally and vertically in a tank portion formed by digging the ground, and covering it. , A storage for rainwater etc. provided with a groove for discharging sediment on the bottom surface and an inspection filling body provided in an infiltration facility, provided with pillars at least in the corners, and the upper parts of the pillars are integrated with an edge frame In the upper part of the inspection packing body connected to the edge frame, holding means for holding the packing body placed above the inspection packing body is provided. In addition, it is preferable that the width | variety, depth, or height dimension of the filling body for inspection is a magnitude | size of the multiple of the width | variety, depth, or height dimension of a filling body, respectively.

  Since the deposit discharge groove is formed on the bottom surface of the tank portion, the deposit can be easily removed. Further, since the inspection operator or the inspection device can move down the ditch from the manhole and inspect the inside of the facility from the inside of the inspection filler, the inside of the tank can be always kept clean.

  Hereinafter, embodiments of storage and infiltration facilities for rainwater and the like according to the present invention will be described in detail. The drawing shows a storage facility according to one embodiment, FIG. 1 is a longitudinal sectional view, FIG. 2 is a transverse sectional view, FIG. 3 is a plan view showing the bottom of the facility, and FIG. It is a partially expanded sectional view which shows a part.

  This storage facility forms the tank part 1 in the ground by digging the ground. The wall surface of the tank portion 1 is formed substantially vertically in the illustrated embodiment, but it may be a tapered surface with the upper portion spread at a certain angle. The tank part 1 forms a bottom part and a wall surface in an impermeable layer made of concrete, a resin sheet, a rubber sheet or the like. The bottom 2 is provided with a cross-shaped groove 3 for discharging sediment such as sand, mud, and dust. As shown in FIG. 4, the groove 3 has a substantially U-shaped cross section, and is provided with a gradient at the groove bottom so as to gradually become deeper toward the intersection 6. A pit 8 is formed at the intersecting portion 6 to store deposits discharged from the groove 3. A manhole 7 is formed above the pit 8.

  The groove 3 is formed in such a size that the deposit can be discharged and the inspection operator or the inspection device can move under the condition of an inspection filler to be described later. That is, the groove 3 is also used as an inspection passage. Therefore, it is preferable that the depth of the groove 3 is 30 to 150 cm and the width is 40 to 100 cm at the inspection filling body, and at least, the groove 3 is formed in a size that can be moved by a normal adult. Further, the groove 3 is formed by linking the corners in the tank in a cross shape as shown in FIG. 5 (a), in a plurality of cross shapes as shown in FIG. 5 (b), or in FIG. 5 (c). As shown, it may be provided in a square shape, or a combination of the grooves shown in FIGS. 3 and 5C.

  A lid 4 is fitted on the upper surface of the groove 3 except for the intersection 6 and the inspection filler. The lid 4 is fitted to a step portion 5 provided at the upper end of the groove 3, and the bottom portion 2 and the upper surface of the lid 3 are formed on substantially the same plane. Therefore, since the lid 3 is fitted to the step portion 5, the lid 3 is opened at the intersection 6 of the groove 2 where the step portion 5 is not provided without being fitted. Further, as shown in FIG. 3, the lid 3 is opened without being fitted even at the portion where the inspection filler is located. The lid 3 is a slat-like structure and is formed so as to allow the deposit to pass therethrough. The lid 3 only needs to be able to permeate the deposits and withstand the load of the stacked fillers and the like, and is not limited to the saw-like structure, but a plate-like body having a small hole, It may be a mesh structure.

  A manhole 7 is provided at the intersection 6 above the lid 3. The manhole 7 preferably has a width or depth dimension that is a multiple of the filling body so that the filling body can also be stacked vertically and horizontally on the lid 3. The configuration of the manhole 7 will be described later. Filling bodies 9 are stacked vertically and horizontally and vertically with the manhole 7 at the center. On the upper surface of the uppermost filler 9, a sediment intrusion prevention plate 10 having small holes is attached, and a gravel layer 11 and a soil layer 12 are sequentially laminated. Plants 13 such as lawn and flowers are planted. Therefore, the coating layer above the earth and sand intrusion prevention plate 10 has water permeability and allows rainwater or the like to penetrate into the tank portion 1.

  The coating layer above the earth and sand intrusion prevention plate 10 is not limited to the above-described embodiment, and can be appropriately changed by a known means. Or a plastic sheet or the like to form a water-impermeable coating layer.

  Next, the filler 9 will be described. As shown in FIG. 6, the filling body 9 is provided with a plurality of hollow columnar portions 15 whose upper and lower surfaces are open at predetermined intervals, and the upper portions of the disposed hollow columnar portions 15 are connecting members. The girder 17 and the edge frame 18 are integrally connected. The lower part of the pipe constituting the hollow column part 15 is reduced in diameter to form a small diameter part 18a, and is formed so as to be fitted to the upper end part of the lower hollow column part 15 when stacked. The girder 17 that is the connecting material is provided in an oblique direction with respect to the edge frame 18, and the edge frame 18 that connects the hollow column part on the outer peripheral side is provided at substantially the same height as the girder 17. Yes. That is, the hollow column portion 15 located on the outer peripheral side of the hollow column portion 15 is connected by the planar rectangular frame 18 at the substantially same height as the girder.

  Therefore, the hollow column portion 15 is disposed at least at the four corners of the edge frame 18 and its intermediate portion and central portion. By disposing the hollow column portion 15 as described above, the porosity in a plane can be increased, and the porosity can be 95% or more. Note that the hollow column portions disposed in the intermediate portion and the central portion may be disposed only in either the intermediate portion or the central portion when the load supported by the filler is small. The number and position of the sheaths are determined in consideration of the load supported by the sheath.

  The hollow column portion 15 is formed by opening the upper and lower surfaces of the cylindrical pipe, and is provided with reinforcing ribs 19 that intersect in a cross shape. The reinforcing ribs 19 can be omitted, and may have a rib structure combined with other shapes, for example, a cross beam shape.

  The edge frame 18 has substantially the same structure as the girder 17 and is a double wall structure having an open bottom surface, and is provided with reinforcing ribs (not shown) inside. The edge frame 18 connects one of the hollow columnar portions 15 located on the outer peripheral side, and the outer surface forms a flat surface so as to be in close contact with each other when the fillers are juxtaposed. In this embodiment, the engaging portion 20 that integrally connects the fillers 9 in the horizontal direction is configured in a nested manner. That is, the engaging portion 20 is provided with a T-shaped projection 21 on one side surface of the U-shaped edge frame 18 and a T-shaped groove 22 into which the T-shaped projection 21 can be fitted on the opposite side surface. It becomes. The T-shaped protrusions 21 of the filling body 9 adjacent to the T-shaped groove 22 in the horizontal direction are integrally connected by being inserted from above.

  When transporting and storing the filling body 9 in the above embodiment, the volume can be reduced by inserting the hollow column portion into the gap between the girders, so that it can be efficiently transported and stored. it can.

  The filling body used for rainwater storage and infiltration facilities according to the present invention is not limited to the above-described embodiment, and can be replaced with various known filling bodies. For example, as shown in FIG. 7 (a), a container-like filling body having a tapered shape whose side walls become smaller toward the bottom, and a flat plate is bent into a plurality of continuous peaks as shown in FIG. A filling body provided with a fitting portion in the section and the trough, a filling body having legs extending from one side of the base as shown in FIG. 7 (c), or a rectangular shape as shown in FIG. 7 (d) The filling body which provided the connection part on the upper and lower sides of this inclination board may be sufficient.

  FIG. 8 shows an inspection filler 30 according to the present invention. The inspection filling body 30 is an application of the filling body 9 shown in FIG. 6, and a portion protruding from the lower end surface of the girder 7 and the edge frame 18 is cut out from the hollow column portion 15, and the columns 31 are provided at the four corner portions. Is provided. In addition, without providing the support | pillar 31 newly in four corner parts, only the hollow column part 15 connected to the edge frame 18 is left in the filling body 9 shown in FIG. You may form by cutting off.

  Thus, by providing a space inside the filling body, it is possible to inspect by inserting the head from below. Therefore, it is necessary that the lower surface of the inspection filling body 30 is opened to a size that can be confirmed by inserting at least the head of the operator's upper body. In the illustrated embodiment, the filling body 15 and the filling body 25 are formed to have the same size, but the height, width, and height are preferably a multiple of the filling body.

  Moreover, it is preferable that the inspection filler formed by applying the fillers 9 and 9A for stacking shown in FIG. 6 is reinforced by filling the hollow column portion with concrete or the like. Further, when the filling material for inspection is formed by applying the filling materials 9 and 9A for stacking, the construction can be performed very easily because it can be stacked vertically and horizontally and vertically while being connected to the filling material.

  9 and 10 show another embodiment of the inspection filler. FIG. 9 is a perspective view of an inspection filling body 30 </ b> A in which the four corners of the upper frame 35 and the lower frame 36 are connected by support columns 37. In addition, between the upper frame 35 and the lower frame 36, a plurality of support columns may be provided as appropriate in the middle portion in addition to the four corners, and the upper frame 35 may be reinforced with a lattice-like beam. FIG. 10 is a perspective view of an inspection filler 30B in which a cross-shaped reinforcing girder 41 is provided inside the frame 40 and pillars 42 are provided downward at four corners. Also in the filling body 30B for inspection, a plurality of support columns may be appropriately provided between the support columns 42 at the four corners.

  In any of the check fillers 30A and 30B, the upper surface may be closed by a plate-like body 50 having a small hole 51 without opening. Thus, when it is set as the structure which closed the upper surface, a filler can be stacked as it is. In this case, the construction is facilitated by matching the size and arrangement of the small holes 51 with the tip shape and arrangement of the column portion of the filler placed on the inspection filler. Further, the structure of the plate-like body 50 is not particularly limited, and it is sufficient that the filling body can be placed thereon. For example, the filling body shown in FIG. A plate-like body formed by cutting off a portion protruding downward from the edge frame 18 may be used.

  FIG. 11 is a perspective view with a part cut away showing an embodiment of a manhole. The manhole 7 is disposed above the intersecting portion 6 of the groove 3 provided substantially at the center of the tank portion 1, and is constituted by a rectangular manhole block 43 and a lid 44. A pit 8 for accumulating deposits is formed at the bottom of the manhole 7. The plane dimensions of the manhole block 43 and the lid 44 are the same as those of the fillers 9 and 9A. The stacked one-line fillers are removed, and the manhole blocks 43 are stacked in the space after the removal, and the manholes 7 are stacked. Is forming.

  The side holes of the manhole block 43 are provided with through-holes 45, 45, and further, a protrusion 46 is provided on the upper surface and a recess 47 is provided on the lower surface so as to be stacked without being displaced from each other. 46 is connected to the recess 47 by fitting. By forming the manhole block 33 having the above configuration to the same height as the filling body 9, the stacked height can be adjusted to the same height as the filling body.

The through-holes 45 and 45 are inspection windows for confirming the situation after removing the deposits, and can be used as ladders that can be put on or lifted by the hand when the manhole 7 is moved up and down. The through holes 45, 45 are not necessarily provided in four directions, and may be provided in two or three directions depending on the position where the manhole 7 is provided. The lid 44 is fitted on the protrusion 46 of the manhole block 43.
In addition, a ladder (not shown) may be provided separately from the through holes 45, 45 so that the inspection operator can easily go up and down.

  FIG. 12 shows a manhole 7A according to another embodiment, which includes a manhole block 43a and a lid 44a. The manhole 7 is formed in a quadrangular shape, whereas the manhole 7A is formed in a circular shape. In the manhole 7A of this embodiment, a U-shaped rod 38 that forms a ladder step when stacked is formed on the inner surface of the manhole block 43a. Other configurations are the same as those of the manhole 7A, and thus the same reference numerals are given and the description thereof is omitted.

Since the manholes 7 and 7A are configured as described above, when necessary, the lids 44 and 44a are opened, a vacuum hose is inserted, and the vacuum pump is operated to suck and remove the deposits accumulated in the pits 8. it can. In addition, a remotely operable inspection device equipped with an operator or a CCD camera for inspection can go down into the manhole and check the removal status of deposits. The operator or the inspection device can check from the through holes 45 when moving down to the manhole, and can easily check by moving the inside of the groove 3 and putting the head or CCD camera in the inspection filling body. it can.
The manhole is not limited to the embodiment, and may be formed integrally with a known structure, or two or more manholes may be provided depending on the size of the tank portion.

  In the said embodiment, the structure which arrange | positions the watering pipe which provided the injection hole in the appropriate position of the stacked filling body in the tank part 1, and installs the pump which injects high-pressure water to the said watering pipe is illustrated. Of course, it can be provided appropriately above the tank portion. By spraying high-pressure water, deposits deposited on the surface of the filler may be washed off and poured into the groove 3 and sucked up from the bottom pit 8 to be removed.

  Moreover, although the said embodiment demonstrated the storage facility of rainwater etc. which has the tank part 1 which dug down the ground and formed the water-impermeable layer by the bottom part and wall surface with concrete, a resin sheet, or a rubber sheet etc., rainwater etc. are underground It is good also as infiltration facilities, such as rain water, which has a tank part in which a permeable layer was formed so that it might permeate into. In the case of a rainwater infiltration facility, the ground is dug down, and gravel is spread on the bottom, and a groove with a gradient is formed with concrete so that the middle part gradually deepens, and the groove is covered with a lid. The fillers may be stacked vertically and horizontally and vertically.

  Thus, in the case of an infiltration facility for rainwater and the like, rainwater is stored for a certain period of time and then discharged into a river or the like or can be actively infiltrated into the underground, resulting in reduction to groundwater.

It is a longitudinal cross-sectional view which shows embodiment of storage facilities and infiltration facilities, such as rain water, concerning this invention. It is a cross-sectional view similarly. It is a top view which shows the bottom face of a tank part. It is a partially expanded sectional view which shows the part of the groove | channel for discharge | emission. It is a top view which shows the bottom face of the tank part which shows other embodiment. It is a perspective view which shows embodiment of a filler. It is a perspective view or sectional view showing other embodiments of a filling object. It is a perspective view which shows other embodiment of a filling body. It is a perspective view of the filling body for inspection. It is a perspective view which shows the filling body for inspection of other embodiment. It is a perspective view for description of the manhole made into the rectangle. It is a perspective view for description of a circular manhole.

Explanation of symbols

1: Tank part 2: Bottom part
3: Groove
4: Lid 5: Step
6: Intersection
7: Manhole 8: Pit
9, 9A: Filling body 10: Sediment invasion prevention plate
11: Gravel layer
12: Soil layer 13: Plant 15, 26: Hollow column part
17: Digit
18: Edge frame 19: Reinforcement rib 20: Engagement part
21: T-shaped protrusion
22: T-shaped groove 26: Connecting plates 30A, 30B: Inspection packing
31: Prop 43: Manhole block
44: Lid 45: Through hole
46: Projection
47: downward step

Claims (7)

  It is a storage and infiltration facility for rainwater and the like that is formed by stacking and filling the filling body in the tank part formed by digging the ground in the vertical and horizontal and vertical directions, and has a groove for discharging sediment on the bottom surface. Forming a manhole at an appropriate position of the groove, placing an inspection filler at an appropriate position on the upper surface of the groove, and an inspection operator or an inspection device moving through the groove to move the inspection filler into the facility Rainwater storage facilities and infiltration facilities characterized by being able to check   The rain water according to claim 1, wherein a lid is fitted on the upper surface of the groove except for the positions of the manhole and the inspection filler, and the filler is stacked on the lid. Storage facilities and infiltration facilities.   The rainwater storage facility and infiltration facility according to claim 1 or 2, wherein the bottom of the groove is provided with a gradient, and a manhole is provided at the deepest position.   The rainwater storage facility and infiltration facility according to any one of claims 1 to 3, wherein the manhole has a width or depth dimension that is a multiple of the width or depth dimension of the filler.   The width, depth, or height dimension of the packing material for inspection is a multiple of the width, depth, or height dimension of the packing material, respectively. Rainwater storage facilities and infiltration facilities. Tanks formed by digging the ground are filled with fillings in the vertical and horizontal and vertical directions, covered, and stored in rainwater etc. with a groove on the bottom for discharging sediment, and inspection provided in infiltration facilities A filler for
Columns are provided at least at the corners, and the upper portions of the column portions are integrally connected by an edge frame, and the upper portion of the inspection filler surrounded by the edge frame is placed above the inspection filler. An inspection filler comprising a body holding means.   The inspection filler according to claim 6, wherein the width, depth or height of the inspection filler is a multiple of the width, depth or height of the filler, respectively.

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