CN105134069A - Technology for constructing gas vertical shaft penetrating strong water-rich rock stratum through anti-well method - Google Patents
Technology for constructing gas vertical shaft penetrating strong water-rich rock stratum through anti-well method Download PDFInfo
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- CN105134069A CN105134069A CN201510532310.2A CN201510532310A CN105134069A CN 105134069 A CN105134069 A CN 105134069A CN 201510532310 A CN201510532310 A CN 201510532310A CN 105134069 A CN105134069 A CN 105134069A
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Abstract
The invention discloses a technology for constructing a gas vertical shaft penetrating a strong water-rich rock stratum through an anti-well method. The technology includes the following steps that (1) the gas vertical shaft is dug; (2) a gas pipe is put into the shaft; (3) the bottom end of an annular space between the shaft wall of the gas vertical shaft and the pipe wall of the gas pipe is plugged through a plugging plate (7); (4) the gas vertical shaft is post-filled. By researching the lower port annulus plugging method and upgrading the filling technology, the problem of heavy water bursting plugging, the problem about the difference between the pressure inside the pipe and the pressure outside the pipe during filling and the problem about filling compactness are solved, the work period and cost of gas pipe installation construction are greatly reduced, and meanwhile, the application range of a raise boring machine is further widened.
Description
Technical field
The present invention relates to mining machinery field, particularly one relates to gas vertical and passes through strong Fu Shui rock stratum anti-well method construction technology.
Background technology
Answer the safety requirements of state coal Work Safety Supervision Bureau, high methane coal mine first must be taken out and adopt afterwards.Colliery is concentrated and is pumped into ground by major diameter gas standpipe (bore about 1m) after being gathered by coal-bed gas, then is applied by gas drawing station, and wherein the installation of gas standpipe and support with backfilling become key project for these.
At present, gas standpipe construction method of installation has two kinds, and one is raise boring machine shaft sinking system, and another kind is positive well method.To be the duration be more than 2 times of raise boring machine shaft sinking system to the shortcoming of positive well method construction and engineering cost is also high especially, and advantage is applicable various formation condition; Raise boring machine shaft sinking system advantage is that the duration is short, expense is low, and shortcoming is rock stratum when having a large amount of water burst, and the shutoff of lower port annular space and gas pipe support with backfilling become great difficult problem.
Summary of the invention
In view of this, the invention reside in provides one to relate to gas vertical to pass through strong Fu Shui rock stratum anti-well method construction technology, pipe external and internal pressure difference problem and pack densification problem when solving large water burst shutoff problem, filling, substantially reduce duration and the cost of the installation of gas standpipe, also widen the range of application of raise boring machine further simultaneously.
For solving the problem, the present invention adopts following technical scheme: one relates to gas vertical and passes through strong Fu Shui rock stratum anti-well method construction technology, comprises the steps:
(1) gas vertical excavates;
(2) gas pipe is transferred;
(3) adopt shutoff dish to the bottom shutoff of annular space between gas shaft wall and gas pipe tube wall;
(4) gas vertical support with backfilling.
The above-mentioned gas vertical that relates to passes through strong Fu Shui rock stratum anti-well method construction technology, and in step (1), gas vertical adopts mine shaft rising boring technique to creep into, and described mine shaft rising boring technique comprises the steps:
I () guide hole creeps into, drill bit creeps into from upper entry downward horizontal tunnel, until upper entry and lower entry through, broken landwaste to be extracted along the annular space between drilling rod and hole wall with direct flushing liquid and is discharged in sedimentation basin set on upper entry;
(ii) guide hole drilled for step (i) carried out reaming and form gas shaft of vertical well, drill bit from lower entry upwards entry creep into, landwaste is directly fallen in lower entry by deadweight, adopts dirt loader or the cleaning of other haulage devices to transport.
The above-mentioned gas vertical that relates to passes through strong Fu Shui rock stratum anti-well method construction technology, and step (2) comprises the steps:
A () on gas vertical, first segment gas pipe is sling by first cross-arm with crane gear by well head, and gas vertical wellhole is put in the lower end of first segment gas pipe;
B the upper end of first segment gas pipe load is placed on the nine-squares beam of well head on gas vertical with first cross-arm by ();
C second section gas pipe is sling by second cross-arm with crane gear by (), and by the upper orifice butt welding of the lower nozzle of second section gas pipe and first segment gas pipe;
D first cross-arm removes by (), and by crane gear, the gas pipe after welding is put into gas vertical wellhole, is then placed on the nine-squares beam of well head on gas vertical by the second cross-arm by the upper end of second section gas pipe load;
E () repeats step (c) with step (d) until gas pipe is all transferred in gas vertical.
The above-mentioned gas vertical that relates to passes through strong Fu Shui rock stratum anti-well method construction technology, and in step (a) and step (c), crane gear is crane or derrick.
The above-mentioned gas vertical that relates to passes through strong Fu Shui rock stratum anti-well method construction technology, in step (3), shutoff dish comprises upper end cylindrical shell, annulus pallet, lower end cylindrical shell, sluicing and shutoff Grouting Pipe and sluicing and shutoff slip casting observation tube, described upper end cylindrical shell comprises left half upper end cylindrical shell and right half upper end cylindrical shell, described annulus pallet comprises left semicircle ring pallet and right semi-circle ring pallet, and described lower end cylindrical shell comprises left half lower end cylindrical shell and right half lower end cylindrical shell; Described left half upper end cylindrical shell, described left semicircle ring pallet and described left half lower end cylindrical shell are fixedly connected into left half shutoff dish, and described right half upper end cylindrical shell, described right semi-circle ring pallet and described right half lower end cylindrical shell are fixedly connected into right half shutoff dish; Described left half lower end cylindrical shell is bolted plate and is fixedly connected with described right half lower end cylindrical shell with bolt, and described left half lower end cylindrical shell and described right half lower end cylindrical shell are respectively equipped with described bolt plate; The lower end of described upper end cylindrical shell is fixedly connected with the upper disk surface of described annulus pallet, the lower card of described annulus pallet is fixedly connected with the upper end of described lower end cylindrical shell, the upper end of the upper end of described sluicing and shutoff Grouting Pipe and described sluicing and shutoff slip casting observation tube is each passed through installing hole and is located in the cylindrical shell of described upper end, and the lower end of the lower end of described sluicing and shutoff Grouting Pipe and described sluicing and shutoff slip casting observation tube is located at the outside of described lower end cylindrical shell respectively; Described sluicing and shutoff Grouting Pipe are all fixedly connected with described left semicircle ring pallet or described right semi-circle ring pallet by described installing hole with described sluicing and shutoff slip casting observation tube; The upper orifice of described sluicing and shutoff slip casting observation tube is higher than the upper orifice of described sluicing and shutoff Grouting Pipe; Controlled valve is equipped with on described sluicing and shutoff Grouting Pipe lower end pipe shaft and on described sluicing and shutoff slip casting observation tube lower end pipe shaft.
The above-mentioned gas vertical that relates to passes through strong Fu Shui rock stratum anti-well method construction technology, and step (3) comprises the steps:
(I) shutoff dish is held tightly gas pipe;
(II) supported by hydraulic monomer and shutoff dish to be pushed between gas shaft wall and gas pipe tube wall in annular space;
(III) by described sluicing and shutoff Grouting Pipe slip casting shutoff, when cement grout flows out from described sluicing and shutoff slip casting observation tube, stop slip casting and the controlled valve of described sluicing and shutoff Grouting Pipe is fastened, after cement grout solidifies, between gas shaft wall and gas pipe tube wall, the lower port shutoff of annular space terminates; The height that described sluicing and shutoff slip casting observation tube enter annular space between gas shaft wall and gas pipe tube wall is 5m; The grout cures time is 70 ~ 75 hours.
The above-mentioned gas vertical that relates to passes through strong Fu Shui rock stratum anti-well method construction technology, and step (4) comprises the steps:
(A) presbyopia sleeve pipe is transferred;
(B) Grouting Pipe is transferred;
(C) division is treated slip casting well section height and calculates cement grout charging quantity;
(D) cement grout is injected to treat between the gas shaft wall of slip casting well section and gas pipe tube wall in annular space from the sucking-off of cement stock tank, and treat that in slip casting well section, cement grout often raises 5m, Grouting Pipe will be pulled out Grouting Pipe liquid outlet and be positioned at the position of 0.5 ~ 1.0m under slip casting well section cement grout liquid level, until originally treat that slip casting well section grouting filling completes.
The above-mentioned gas vertical that relates to passes through strong Fu Shui rock stratum anti-well method construction technology, presbyopia sleeve pipe in step (A) is transferred together with the gas pipe in step (2), and the attached outside being welded in gas pipe of presbyopia sleeve pipe, and the axial angle of adjacent two joint presbyopia sleeve pipes is less than 2 °, presbyopia on presbyopia sleeve pipe adopts the mode of gas cutting to process, and the length often saving presbyopia sleeve pipe is equal with the length of the gas pipe that this joint presbyopia sleeve pipe welds; Presbyopia aperture is 4 ~ 5cm.
The above-mentioned gas vertical that relates to passes through strong Fu Shui rock stratum anti-well method construction technology, when transferring Grouting Pipe in step (B), Grouting Pipe put into presbyopia sleeve pipe and Grouting Pipe is transferred along presbyopia sleeve pipe, stopping transferring Grouting Pipe when the liquid outlet of Grouting Pipe exceeds annular space bottom or annular pack consolidation face 1.0 ~ 2.0m last time between gas shaft wall and gas pipe tube wall.
The above-mentioned gas vertical that relates to passes through strong Fu Shui rock stratum anti-well method construction technology, after between one section of gas shaft wall until slip casting well section and gas pipe tube wall, Filling of Annulus Space is constructed and is terminated, rinse Grouting Pipe and will Grouting Pipe be carried until Grouting Pipe lower nozzle distance to treat between the gas shaft wall of slip casting well section and gas pipe tube wall cement grout liquid level 20m in annular space, upper one is carried out the next one and treats Filling of Annulus Space mortar depositing construction between the gas shaft wall of slip casting well section and gas pipe tube wall after cement grout solidifies 45 ~ 50 hours in slip casting well section.
The invention has the beneficial effects as follows:
1. large water burst shutoff problem when the present invention efficiently solves mine shaft rising boring.
2. when the present invention efficiently solves filling, pipe external and internal pressure difference problem and pack densification problem, substantially reduce duration and the cost of the installation of gas standpipe.
3. the present invention has widened the range of application of raise boring machine further.
Accompanying drawing explanation
Fig. 1 the present invention relates to the schematic diagram that gas vertical passes through strong Fu Shui rock stratum anti-well method construction technology;
Fig. 2 is the side line of vision structural representation that gas vertical of the present invention passes through shutoff dish in the anti-well method construction technology of strong Fu Shui rock stratum;
Fig. 3 is the structural representation that gas vertical of the present invention passes through a left side half shutoff dish of shutoff dish in the anti-well method construction technology of strong Fu Shui rock stratum;
Fig. 4 is the structural representation that gas vertical of the present invention passes through the right side half shutoff dish of shutoff dish in the anti-well method construction technology of strong Fu Shui rock stratum.
In figure: 1-grouting pump; 2-Grouting Pipe; 3-cross-arm; 4-gas pipe; 5-nine-squares beam; 6-presbyopia sleeve pipe; 7-shutoff dish; 8-sluices and shutoff slip casting observation tube; 9-concrete support platform; 10-sluices and shutoff Grouting Pipe; 11-hydraulic monomer supports; 12-cement stock tank; Entry under 13-; 14-extraction vertical; 15-upper end cylindrical shell; 16-annulus pallet; 17-lower end cylindrical shell; 18-bolt plate; The left half upper end cylindrical shell of 19-; The left half lower end cylindrical shell of 20-; 21-left semicircle ring pallet; The right half upper end cylindrical shell of 22-; 23-right semi-circle ring pallet; The right half lower end cylindrical shell of 24-; 25-controlled valve.
Detailed description of the invention
For clearly demonstrating the scheme in the present invention, providing preferred embodiment below and being described with reference to the accompanying drawings.
The present embodiment is for pine algal coal electricity company Shi Hao ore deposit, Chongqing gas pumping vertical, and the construction technology of this gas pumping vertical comprises the steps:
(1) gas vertical excavates.
In the present embodiment, gas vertical 14 adopts raise boring machine shaft sinking system to construct, diameter guide hole reaming is become to be gas vertical 14 pit shaft of 1.65m, the degree of depth of gas vertical 14 is 305.33m, and the open-hole rock stratum water yield of gas vertical 14 is 20m3/h, and deviation at the bottom of hole is 0.54%.。In guide hole drilling process, rig is by promoting mainly oil cylinder and thrust and torsion are passed to unit head by motor, thrust and torsion are passed to guide hole drill bit by drilling rod by unit head, on guide hole drill bit, hobboing cutter is sheared and fractured rock by rolling extrusion, and guide hole drill bit creeps into from upper entry downward horizontal tunnel, until upper entry is connected through with lower entry 13, broken landwaste is extracted side by side to the sedimentation basin being arranged in upper entry along the annular space between drilling rod and hole wall with direct flushing liquid.And guide hole reaming is being become in the process of pit shaft, rig is by promoting mainly oil cylinder and pulling force and torsion are passed to unit head by motor, pulling force and torsion are passed to guide hole drill bit by drilling rod by unit head, on guide hole drill bit, hobboing cutter is sheared and fractured rock by rolling extrusion, and guide hole drill bit from lower entry 13 upwards entry creep into, landwaste is directly fallen in lower entry 13 by deadweight, adopts the cleaning in time such as dirt loader or other haulage devices to transport.
(2) gas pipe 1 is transferred, and comprises the steps:
A () on gas vertical 14, first segment gas pipe 4 is sling by first cross-arm 3 with crane gear by well head, and gas vertical 14 wellhole is put in the lower end of first segment gas pipe 4;
B the upper end of first segment gas pipe 4 load is placed on the nine-squares beam 5 of well head on gas vertical 14 with first cross-arm 3 by ();
C second section gas pipe 4 is sling by second cross-arm 3 with crane gear by (), and by the upper orifice butt welding of the lower nozzle of second section gas pipe 4 and first segment gas pipe 4;
D first cross-arm 3 removes by (), and by crane gear, the gas pipe 4 after welding is put into gas vertical 14 wellhole, is then placed on the nine-squares beam 5 of well head on gas vertical 14 by the second cross-arm 3 by the upper end of second section gas pipe 4 load;
E () repeats step (c) with step (d) until gas pipe 4 is all transferred in gas vertical 14.
In the present embodiment, what crane gear adopted is derrick, the gas pipe 4 of transferring installation in gas vertical 14 adopts 3 sections of 3 kinds of specifications, wherein, the gas pipe 4 of gas vertical 14 bottom in 107.23m well section selects DN1000mm × 22mm spiral welded pipe, and the gas pipe 4 in gas vertical 14 middle 100m well section selects DN1000mm × 20mm, and the gas pipe 4 in the residue well section of gas vertical 14 upper end selects DN1000mm × 16mm spiral welded pipe, pipe joint is welded to connect, and often saves the long 10m of gas pipe 4.
(3) with the bottom of the annular space between shutoff dish 7 shutoff gas vertical 14 borehole wall and gas pipe 4 tube wall, comprise the steps:
(I) shutoff dish 7 is held tightly gas pipe 4;
(II) supporting 11 by hydraulic monomer to push between gas vertical 14 borehole wall and gas pipe 4 tube wall in annular space by shutoff dish 7;
(III) by described sluicing and shutoff Grouting Pipe 10 slip casting shutoff, when cement grout flows out from described sluicing and shutoff slip casting observation tube 8, stop slip casting and the controlled valve 25 of described sluicing and shutoff Grouting Pipe 10 is fastened, after cement grout solidifies, between gas vertical 14 borehole wall and gas pipe 4 tube wall, the lower port shutoff of annular space terminates; The height that described sluicing and shutoff slip casting observation tube 8 enter annular space between gas vertical 14 borehole wall and gas pipe 4 tube wall is 5m; The grout cures time is 70 ~ 75 hours.
Wherein, as shown in Figure 2, in step (3), shutoff dish 7 comprises upper end cylindrical shell 15, annulus pallet 16, lower end cylindrical shell 17, sluice and shutoff Grouting Pipe 10 and sluicing and shutoff slip casting observation tube 8, the lower end of described upper end cylindrical shell 15 is fixedly connected with the upper disk surface of described annulus pallet 16, the lower card of described annulus pallet 16 is fixedly connected with the upper end of described lower end cylindrical shell 17, the upper end of the upper end of described sluicing and shutoff Grouting Pipe 10 and described sluicing and shutoff slip casting observation tube 8 is each passed through installing hole and is located in described upper end cylindrical shell 15, the lower end of the lower end of described sluicing and shutoff Grouting Pipe 10 and described sluicing and shutoff slip casting observation tube 8 is located at the outside of described lower end cylindrical shell 17 respectively, described sluicing and shutoff Grouting Pipe 10 are fixedly connected with described annulus pallet 16 by described installing hole with described sluicing and shutoff slip casting observation tube 8, the upper orifice of described sluicing and shutoff slip casting observation tube 8 is higher than the upper orifice of described sluicing and shutoff Grouting Pipe 10, controlled valve 25 is equipped with on described sluicing and shutoff Grouting Pipe 10 lower end pipe shaft and on described sluicing and shutoff slip casting observation tube 8 lower end pipe shaft.
As shown in Figure 3 and Figure 4, described upper end cylindrical shell 15 comprises left half upper end cylindrical shell 19 and right half upper end cylindrical shell 22, described annulus pallet 16 comprises left semicircle ring pallet 21 and right semi-circle ring pallet 23, and described lower end cylindrical shell comprises left half lower end cylindrical shell 20 and right half lower end cylindrical shell 24; Described left half upper end cylindrical shell 19, described left semicircle ring pallet 21 and described left half lower end cylindrical shell 20 are fixedly connected into left half shutoff dish, and described right half upper end cylindrical shell 22, described right semi-circle ring pallet 23 and described right half lower end cylindrical shell 24 are fixedly connected into right half shutoff dish; Described left half lower end cylindrical shell 20 is bolted plate 18 and is fixedly connected with described right half lower end cylindrical shell 24 with bolt, and described left half lower end cylindrical shell 20 and described right half lower end cylindrical shell 24 are respectively equipped with described bolt plate 18; Described sluicing and shutoff Grouting Pipe 10 are all fixedly connected with described left semicircle ring pallet 21 with described sluicing and shutoff slip casting observation tube 8.
When supporting 11 with hydraulic monomer and described shutoff dish 7 being pushed between gas vertical 14 borehole wall and gas pipe 4 tube wall in annular space, first should open the controlled valve 25 on controlled valve 25 on described sluicing and shutoff Grouting Pipe 10 pipe shaft and described sluicing and shutoff slip casting observation tube 8 pipe shaft, then supporting 11 with described hydraulic monomer to push between gas vertical 14 borehole wall and gas pipe 4 tube wall in annular space by described shutoff dish 7, the water being so not only conducive to the annular space between gas vertical 14 borehole wall and gas pipe 4 tube wall is discharged, also reduce the difficulty described shutoff dish 7 being pushed described annular space.
Be pushed in the annular space between gas vertical 14 borehole wall and gas pipe 4 at described shutoff dish 7, then by described sluicing and shutoff Grouting Pipe 10 to the described annular space slip casting be positioned at above described shutoff dish 7, until slurries flow out from described sluicing and shutoff slip casting observation tube 8 stop slip casting, and the controlled valve 25 of closing on described sluicing and shutoff Grouting Pipe 10 pipe shaft, controlled valve 25 on described sluicing and shutoff slip casting observation tube 8 pipe shaft is held open state, so that the water burst in the annular space between firedamp drainage vertical 14 borehole wall and gas pipe 4 tube wall.
In addition, due to gas vertical 14 borehole wall not proper cylindrical shape, and certain gap can be there is between described upper end cylindrical shell 15 shell wall on gas vertical 14 borehole wall and described shutoff dish 7, therefore carrying out in the process of shutoff slip casting with cement grout to annular space bottom between gas vertical 14 borehole wall and gas pipe 4 tube wall, cement grout can flow out along the gap between gas vertical 14 borehole wall and described upper end cylindrical shell 15 shell wall, thus flexible fabric is adopted to clog described gap in order to avoid cement grout flows out, cotton yarn is adopted to clog described gap in the present embodiment.
By described sluicing and shutoff Grouting Pipe 10 to after between gas vertical 14 and gas pipe 4 tube wall, annular space slip casting terminates latter 72 hours, from described annulus pallet 16 upper disk surface to the cement slurry sets within the scope of described sluicing and shutoff slip casting observation tube 8 upper orifice, water burst between gas vertical 14 borehole wall and gas pipe 4 tube wall in annular space only leaks by described sluicing and shutoff slip casting observation tube 8, and so far between gas vertical 14 borehole wall and gas pipe 4 tube wall, the shutoff of annular space bottom completes.
(4) gas vertical support with backfilling, comprises the steps:
(A) presbyopia sleeve pipe 6 is transferred;
For the ease of follow-up, support with backfilling mortar depositing construction is carried out to the annular space between gas vertical 14 borehole wall and gas pipe 4 tube wall, when transferring gas pipe 4, transfer as the presbyopia sleeve pipe 6 of transferring Grouting Pipe 2 passage together with gas pipe 4, namely step (A) has been implemented in step (2).The wherein attached outside being welded in gas pipe 4 of presbyopia sleeve pipe 6, and the axial angle of adjacent two joint presbyopia sleeve pipes 6 is less than 2 °, in order to avoid occur sharply bending when presbyopia sleeve pipe 6 is spatially changed direction and affect transferring of Grouting Pipe 2, in view of this, the present embodiment adopts the method for projective iteration, project in the plane by utilizing presbyopia sleeve pipe 6 major axis and presbyopia sleeve pipe 6 positioned, smoothly straight to ensure with the presbyopia sleeve pipe 6 of welding manner spreading, guarantee transferring smoothly of Grouting Pipe 2.Wherein, presbyopia sleeve pipe 6 adopts the mode of gas cutting presbyopia to cut out presbyopia on sleeve pipe, and presbyopia aperture is 4 ~ 5cm.Asymmetric gas cutting should be avoided, in order to avoid make presbyopia sleeve pipe 6 long axis direction occurs that the hand-hole of deformation effect Grouting Pipe 2 is transferred when making presbyopia sleeve pipe 6.
(B) Grouting Pipe 2 is transferred, concrete operations are: after the annular space bottom shutoff success between gas vertical 14 borehole wall and gas pipe 4 tube wall, Grouting Pipe 2 put into presbyopia sleeve pipe 6 and Grouting Pipe 2 is transferred along presbyopia sleeve pipe 6, stopping transferring Grouting Pipe 2 when the liquid outlet of Grouting Pipe 2 exceeds annular space bottom or annular pack consolidation face 1.0 ~ 2.0m last time between gas vertical 14 borehole wall and gas pipe 4 tube wall.
(C) require and the character of grouting cement grout according to Specific construction, as the hardening time etc. of cement grout, division is treated slip casting well section height and is calculated cement grout charging quantity, to guarantee that in slip casting process, Grouting Pipe 2 can not be cured in cement paste, and guarantee upwards to pull up the normal cure that Grouting Pipe 2 can not affect cement grout;
(D) cement grout is injected to treat between gas vertical 14 borehole wall of slip casting well section and gas pipe 4 tube wall in annular space from cement stock tank 12 sucking-off, and treat that in slip casting well section, cement grout often raises 5m, Grouting Pipe 2 will be pulled out Grouting Pipe 2 liquid outlet and be positioned at the position of 0.5 ~ 1.0m under slip casting well section cement grout liquid level, until originally treat that slip casting well section grouting filling completes.
In the present embodiment, the Filling of Annulus Space between gas vertical 14 borehole wall and gas pipe 4 tube wall is from the annular space bottom between gas vertical 14 borehole wall and gas pipe 4 tube wall, highly treats slip casting well section carry out top water tube drawing slip casting by default slip casting well section.Wherein, according to the data setting in step (C) and calculate, with cement pump 1 by cement grout from sucking-off in cement stock tank 12 and in injecting and treating between gas vertical 14 borehole wall of slip casting well section and gas pipe 4 tube wall annular space, then treat that in slip casting well section, cement grout often raises 5m, just Grouting Pipe 2 will be pulled out Grouting Pipe 2 liquid outlet and be positioned at the position of 0.5 ~ 1.0m under slip casting well section cement grout liquid level, until originally treat that slip casting well section grouting filling completes.And in order to ensure the total quality of the Filling of Annulus Space between gas vertical 14 borehole wall and gas pipe 4 tube wall, next section must carry out after solidifying until cement grout in the annular space between gas vertical 14 borehole wall and gas pipe 4 tube wall of slip casting well section at the preceding paragraph until the Filling of Annulus Space mortar depositing construction between gas vertical 14 borehole wall and gas pipe 4 tube wall of slip casting well section, wherein concrete operations are: after the Filling of Annulus Space between one section of gas vertical 14 borehole wall until slip casting well section and gas pipe 4 tube wall is constructed and terminated, rinse Grouting Pipe 2 and will Grouting Pipe 2 be carried until cement grout liquid level 20m in Grouting Pipe 2 lower nozzle distance is treated between gas vertical 14 borehole wall of slip casting well section and gas pipe 4 tube wall annular space, the Filling of Annulus Space mortar depositing construction that the next one is treated between gas vertical 14 borehole wall of slip casting well section and gas pipe 4 tube wall is carried out after cement grout solidifies 48 hours in annular space between upper gas vertical 14 borehole wall until slip casting well section and gas pipe 4 tube wall.Cycling like this, until the Filling of Annulus Space between whole gas vertical 14 borehole wall and gas pipe 4 tube wall has been constructed.
In the present embodiment, the upper well head of gas vertical 14 and the annular space between gas vertical 14 borehole wall at lower well head place and gas pipe 4 tube wall adopt C20 concreting.
The degree of depth due to the annular space between gas vertical 14 borehole wall and gas pipe 4 tube wall is generally tens of rice to hundreds of rice, Grouting Pipe 2 is difficult to directly transfer to projected depth, the annular space degree of depth such as, in the present embodiment between gas vertical 14 borehole wall and gas pipe 4 tube wall reaches 305.33m, if without Grouting Pipe 2 downward putting device, the lower nozzle of Grouting Pipe 2 is difficult to directly transfer the degree of depth to design, this just constructs for the Filling of Annulus Space between gas vertical 14 borehole wall and gas pipe 4 tube wall and brings great trouble, have impact on the quality of the Filling of Annulus Space between whole gas vertical 14 borehole wall and gas pipe 4 tube wall.In the present embodiment, what the use of presbyopia sleeve pipe 6 was Grouting Pipe 2 transfer to provide transfers passage, thus be convenient to Grouting Pipe 2 and can transfer to default slip casting position smoothly, improve transferring efficiency and transferring the degree of accuracy of Grouting Pipe 2, thus improve the speed of application of the Filling of Annulus Space between gas vertical 14 borehole wall and gas pipe 4 tube wall, be also conducive to the quality of the Filling of Annulus Space improved between gas vertical 14 borehole wall and gas pipe 4 tube wall.And the presbyopia on presbyopia sleeve pipe 6 meets in the annular space of cement grout from presbyopia sleeve pipe 6 unhinderedly between outflow injection gas vertical 14 borehole wall and gas pipe 4 tube wall.
After the lower port shutoff of described annular space completes, rock stratum water burst is discharged by described sluicing and shutoff slip casting observation tube 8, and when carrying out filling and injecting slurry to the annular space between gas vertical 14 borehole wall and gas pipe 4 tube wall and constructing, described controlled valve 25 on described sluicing and shutoff slip casting observation tube 8 must be tamping, the water surface in annular space now between gas vertical 14 borehole wall and gas pipe 4 tube wall can rise rapidly, until arrival hydrostatic level, in order to keep the internal and external pressure balance of gas pipe 4, need pour water in gas pipe 4 when closing the controlled valve 25 on described sluicing and shutoff slip casting observation tube 8 pipe shaft, to ensure gas pipe 4 internal and external pressure balance, and ensure the internal and external pressure balance of gas pipe, in filling afterwards, monitor water level inside and outside gas pipe 4 at any time.
And the construction of the present embodiment gas pumping vertical starts to final acceptance of construction, the actual construction time is only 120 days, and the pure engineering time only has 70 days, but workmanship reaches excellent grade.Therefore the present invention is adopted to carry out gas shaft construction, large water burst shutoff problem when not only effectively can solve mine shaft rising boring, but also pipe external and internal pressure difference problem and pack densification problem when effectively can solve filling, substantially reduce duration and the cost of gas pipe installation, widen the range of application of raise boring machine further simultaneously.
Above-described embodiment is only for the invention example is clearly described, and the restriction not to the invention detailed description of the invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All within the spirit and principles in the present invention any apparent change of extending out or variation be still among the protection domain of the invention claim.
Claims (10)
1. relate to gas vertical and pass through a strong Fu Shui rock stratum anti-well method construction technology, it is characterized in that, comprise the steps:
(1) gas vertical (14) excavates;
(2) gas pipe (4) is transferred;
(3) adopt shutoff dish (7) to the bottom shutoff of annular space between gas vertical (14) borehole wall and gas pipe (4) tube wall;
(4) gas vertical support with backfilling.
2. the gas vertical that relates to according to claim 1 passes through strong Fu Shui rock stratum anti-well method construction technology, it is characterized in that, in step (1), gas vertical (14) adopts mine shaft rising boring technique to creep into, and described mine shaft rising boring technique comprises the steps:
I () guide hole creeps into, drill bit creeps into from upper entry downward horizontal tunnel (13), until upper entry and lower entry (13) through, broken landwaste to be extracted along the annular space between drilling rod and hole wall with direct flushing liquid and is discharged in sedimentation basin set on upper entry;
(ii) guide hole drilled for step (i) carried out reaming and form gas shaft of vertical well, drill bit from lower entry (13) upwards entry creep into, landwaste is directly fallen in lower entry (13) by deadweight, adopts dirt loader or the cleaning of other haulage devices to transport.
3. the gas vertical that relates to according to claim 1 passes through strong Fu Shui rock stratum anti-well method construction technology, and it is characterized in that, step (2) comprises the steps:
A first segment gas pipe (4) is sling by first cross-arm (3) with crane gear by () on the upper well head of gas vertical (14), and gas vertical (14) wellhole is put in the lower end of first segment gas pipe (4);
B the upper end of first segment gas pipe (4) load is placed on the nine-squares beam (5) of the upper well head of gas vertical (14) with first cross-arm (3) by ();
C second section gas pipe (4) is sling by second cross-arm (3) with crane gear by (), and by the upper orifice butt welding of the lower nozzle of second section gas pipe (4) and first segment gas pipe (4);
D first cross-arm (3) removes by (), and by crane gear, the gas pipe (4) after welding is put into gas vertical (14) wellhole, then by the second cross-arm (3), the upper end of second section gas pipe (4) load is placed on the nine-squares beam (5) of the upper well head of gas vertical (14);
E () repeats step (c) with step (d) until gas pipe (4) is all transferred in gas vertical (14).
4. the gas vertical that relates to according to claim 3 passes through strong Fu Shui rock stratum anti-well method construction technology, it is characterized in that, in step (a) and step (c), crane gear is crane or derrick.
5. pass through strong Fu Shui rock stratum anti-well method construction technology according to the arbitrary described gas vertical that relates to of Claims 1 to 4, it is characterized in that, in step (3), shutoff dish (7) comprises upper end cylindrical shell (15), annulus pallet (16), lower end cylindrical shell (17), sluice and shutoff Grouting Pipe (10) and sluicing and shutoff slip casting observation tube (8), described upper end cylindrical shell (15) comprises left half upper end cylindrical shell (19) and right half upper end cylindrical shell (22), described annulus pallet (16) comprises left semicircle ring pallet (21) and right semi-circle ring pallet (23), described lower end cylindrical shell (17) comprises left half lower end cylindrical shell (20) and right half lower end cylindrical shell (24), described left half upper end cylindrical shell (19), described left semicircle ring pallet (21) and described left half lower end cylindrical shell (20) are fixedly connected into left half shutoff dish, and described right half upper end cylindrical shell (22), described right semi-circle ring pallet (23) and described right half lower end cylindrical shell (24) are fixedly connected into right half shutoff dish, described left half lower end cylindrical shell is bolted plate (18) and is fixedly connected with described right half lower end cylindrical shell (24) with bolt, and described left half lower end cylindrical shell (20) and described right half lower end cylindrical shell (24) are respectively equipped with described bolt plate (18), the lower end of described upper end cylindrical shell (15) is fixedly connected with the upper disk surface of described annulus pallet (16), the lower card of described annulus pallet (16) is fixedly connected with the upper end of described lower end cylindrical shell (17), the upper end of the upper end of described sluicing and shutoff Grouting Pipe (10) and described sluicing and shutoff slip casting observation tube (8) is each passed through installing hole and is located in described upper end cylindrical shell (15), the lower end of the lower end of described sluicing and shutoff Grouting Pipe (10) and described sluicing and shutoff slip casting observation tube (8) is located at the outside of described lower end cylindrical shell (17) respectively, described sluicing and shutoff Grouting Pipe (10) are all fixedly connected with described left semicircle ring pallet (21) or described right semi-circle ring pallet (23) by described installing hole with described sluicing and shutoff slip casting observation tube (8), the upper orifice of described sluicing and shutoff slip casting observation tube (8) is higher than the upper orifice of described sluicing and shutoff Grouting Pipe (10), controlled valve (25) is equipped with on described sluicing and shutoff Grouting Pipe (10) lower end pipe shaft and on described sluicing and shutoff slip casting observation tube (8) lower end pipe shaft.
6. the gas vertical that relates to according to claim 5 passes through strong Fu Shui rock stratum anti-well method construction technology, and it is characterized in that, step (3) comprises the steps:
(I) shutoff dish (7) is held tightly gas pipe (4);
(II) supporting (11) by hydraulic monomer to push between gas vertical (14) borehole wall and gas pipe (4) tube wall in annular space by shutoff dish (7);
(III) by described sluicing and shutoff Grouting Pipe (10) slip casting shutoff, when cement grout flows out from described sluicing and shutoff slip casting observation tube (8), stop slip casting and the controlled valve (25) of described sluicing and shutoff Grouting Pipe (10) is fastened, after cement grout solidifies, between gas vertical (14) borehole wall and gas pipe (4) tube wall, the lower port shutoff of annular space terminates; The height that described sluicing and shutoff slip casting observation tube (8) enter annular space between gas vertical (14) borehole wall and gas pipe (4) tube wall is 5m; The grout cures time is 70 ~ 75 hours.
7. the gas vertical that relates to according to claim 1 passes through strong Fu Shui rock stratum anti-well method construction technology, and it is characterized in that, step (4) comprises the steps:
(A) presbyopia sleeve pipe (6) is transferred;
(B) Grouting Pipe (2) is transferred;
(C) division is treated slip casting well section height and calculates cement grout charging quantity;
(D) cement grout is injected to treat between gas vertical (14) borehole wall of slip casting well section and gas pipe (4) tube wall in annular space from cement stock tank (12) sucking-off, and treat that in slip casting well section, cement grout often raises 5m, Grouting Pipe (2) will be pulled out Grouting Pipe (2) liquid outlet and be positioned at the position of 0.5 ~ 1.0m under slip casting well section cement grout liquid level, until originally treat that slip casting well section grouting filling completes.
8. the gas vertical that relates to according to claim 7 passes through strong Fu Shui rock stratum anti-well method construction technology, it is characterized in that, presbyopia sleeve pipe (6) in step (A) is transferred together with the gas pipe (4) in step (2), and the attached outside being welded in gas pipe (4) of presbyopia sleeve pipe (6), and the axial angle of adjacent two joints presbyopia sleeve pipe (6) is less than 2 °, presbyopia on presbyopia sleeve pipe (6) adopts the mode of gas cutting to process, and the length often saving presbyopia sleeve pipe (6) is equal with the length of the gas pipe (4) that this joint presbyopia sleeve pipe (6) welds, presbyopia aperture is 4 ~ 5cm.
9. the gas vertical that relates to according to claim 8 passes through strong Fu Shui rock stratum anti-well method construction technology, it is characterized in that, when transferring Grouting Pipe (2) in step (B), Grouting Pipe (2) put into presbyopia sleeve pipe (6) and Grouting Pipe (2) is transferred along presbyopia sleeve pipe (6), stopping transferring Grouting Pipe (2) when the liquid outlet of Grouting Pipe (2) exceeds annular space bottom or annular pack consolidation face 1.0 ~ 2.0m last time between gas vertical (14) borehole wall and gas pipe (4) tube wall.
10. pass through strong Fu Shui rock stratum anti-well method construction technology according to the arbitrary described gas vertical that relates to of claim 7 ~ 9, it is characterized in that, after between one section of gas vertical (14) borehole wall until slip casting well section and gas pipe (4) tube wall, Filling of Annulus Space is constructed and is terminated, rinse Grouting Pipe (2) and will Grouting Pipe (2) be carried until Grouting Pipe (2) lower nozzle distance to treat between gas vertical (14) borehole wall of slip casting well section and gas pipe (4) tube wall cement grout liquid level 20m in annular space, upper one is carried out the next one and treats Filling of Annulus Space mortar depositing construction between gas vertical (14) borehole wall of slip casting well section and gas pipe (4) tube wall after cement grout solidifies 45 ~ 50 hours in slip casting well section.
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| CN110374664A (en) * | 2019-07-19 | 2019-10-25 | 中煤科工集团重庆研究院有限公司 | Reverse drilling construction method for high gas and outburst coal seam fresh air well |
| CN112324339A (en) * | 2020-11-02 | 2021-02-05 | 淮南矿业(集团)有限责任公司 | Novel casing running process for large-diameter through drilling |
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