CN212225213U - Inclined shaft construction equipment - Google Patents
Inclined shaft construction equipment Download PDFInfo
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- CN212225213U CN212225213U CN202020861906.3U CN202020861906U CN212225213U CN 212225213 U CN212225213 U CN 212225213U CN 202020861906 U CN202020861906 U CN 202020861906U CN 212225213 U CN212225213 U CN 212225213U
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Abstract
The utility model discloses a construction equipment for inclined shaft, wherein a shield machine is pushed forward in surrounding rock along the central line of the inclined shaft, and a track is arranged along the inclined shaft; a segment erector, a segment transporter, a segment remover, an anchor rod machine, a concrete sprayer and a water sump are sequentially arranged at the rear side of the shield machine; the utility model ensures that the operations of digging, deslagging, lining and the like are carried out under the shield of the shield, thereby ensuring the safety; the method has the advantages of controllable water inflow, high tunneling speed, convenience in early support, small damage to surrounding rocks, better control over the over-excavation range, safety, environmental protection, no need of grouting for water control and the like.
Description
Technical Field
The utility model relates to an inclined shaft construction technical field, concretely relates to utilize closed shield structure machine to tunnel and interim section of jurisdiction is strutted, anchor net spouts permanent supporting's inclined shaft construction method and equipment, be applicable to the inclined shaft construction of various geological conditions and degree of depth.
Background
Usually, after entering the stable bedrock, the inclined shaft adopts an active supporting scheme of anchor net spraying, and the supporting scheme is economic, safe, scientific and reasonable. The traditional inclined shaft tunneling method adopts a drilling and blasting method, the method needs manual drilling, then explosive charging and initiation, slag tapping and supporting, the safety factor is relatively low, the mechanization degree is low, the labor intensity of workers is high, and the section is not easy to control. In addition, the restriction of the underground condition is more, and especially the shaft with larger water inflow is easy to cause water accumulation at the bottom of the shaft, which brings great difficulty to the construction of the inclined shaft.
The shield machine is a special engineering machine for tunnel excavation, has the functions of excavating and cutting soil bodies, conveying soil slag, assembling tunnel linings, measuring, guiding, rectifying deviation and the like, and is widely used for tunnel engineering of subways, railways, highways, municipal works, hydropower and the like. The shield tunneling machine is generally divided into a hard rock shield tunneling machine (TBM) and a soft rock shield tunneling machine, the hard rock shield tunneling machine is commonly used for tunneling medium-hardness rock strata, the axial compression resistance of the commonly tunneled rock strata is less than 50-150Mpa, and the soft rock shield tunneling machine is mainly suitable for soft surrounding rock construction.
Compared with a drilling and blasting method, the shield machine for the inclined shaft construction has the characteristics of high tunneling speed, convenience in early-stage support, small damage to surrounding rocks, better control over an over-excavation range, safety, environmental friendliness and the like. However, as the depth of the inclined shaft is increased, the water pressure is increased, the water quantity of the working surface is also increased, and if the traditional open shield is adopted, the problem of water burst of the working surface is difficult to solve, so that great difficulty is brought to construction; if adopt traditional closed shield structure, need adopt tube sheet formula supporting construction, and shield structure, section of jurisdiction pressure-bearing are too big, and the general equipment of present technical condition and section of jurisdiction pressure-bearing are no longer than 50m vertical depth, and the section of jurisdiction price is higher, and is uneconomical, is difficult to satisfy the construction of dark inclined shaft.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a construction method and equipment for an inclined shaft,
the utility model discloses a following technical scheme realizes: a construction method of an inclined shaft comprises the following steps:
firstly, a shield machine is propelled forwards along the central line of an inclined shaft under the protection of a cylindrical shield shell; meanwhile, assembling temporary segments by a segment erector, and pressing the temporary segments by a hydraulic jack;
secondly, grouting the wall between the temporary duct piece and the excavated surrounding rock wall in time;
filling grease into the shield tail brush at the rear side of the shield shell; the shield tail brush is positioned between the temporary segment and the wall of the excavated surrounding rock, and plays a role in sealing between the tail shield shell and the temporary segment as well as between the tail shield shell and the wall of the excavated surrounding rock, and meanwhile, water on an excavation surface is prevented from entering the shield shell;
fourthly, after the shield tunneling machine is constructed for 100-150 meters, the temporary duct piece is removed by a duct piece removing machine, and a permanent support system is formed by timely hanging a net, drilling an anchor rod, fixing a net piece and spraying concrete;
fifthly, arranging water discharge holes at certain intervals in the permanent support system for centralized water guide so as to ensure the safety of the permanent support system, and arranging a water intercepting ditch so as to prevent water gushing from reaching the working face in the inclined shaft.
It further comprises the following steps: the slag stone generated by the tunneling of the cutter head of the shield machine in the front of the shield machine enters the closed slag stone bin; then, continuously discharging the slag stones in the closed slag stone bin through a spiral conveyer; the discharge port of the spiral conveyer is connected with an inverted trapezoidal hopper, and the hopper is positioned above the belt conveyer; the belt conveyer discharges the slag stones to the mine car and then transports the slag stones to the ground.
A pressure sensor is arranged in a closed slag stone bin of the shield tunneling machine; the closed slag stone bin is connected to the water bin through a first water drainage pipe and a second water drainage pipe and used for pressure relief and water drainage of the closed slag stone bin; and a drainage pump is arranged in the water bin and discharges water to the ground through a third drainage pipe.
The grouting material is fine aggregate concrete, and the solidified fine aggregate concrete and the temporary duct piece jointly form a temporary supporting system to bear the pressure of a surrounding soil layer and the underground water pressure.
A shield constructs the construction equipment of the well, the shield constructs the machine and advances in the surrounding rock along the central line of the well, is fitted with the orbit along the well;
a segment erector, a segment transporter, a segment remover, an anchor rod machine, a concrete sprayer and a water sump are sequentially arranged at the rear side of the shield machine;
the shield machine comprises a cylindrical shield shell, a shield machine cutter head and a cutter head driving device for driving the shield machine cutter head are mounted at the front end of the shield shell, and a sealed ballast bin is arranged on the rear side of the shield machine cutter head;
the rear end of the shield shell is positioned between the temporary duct piece and the wall of the excavated surrounding rock; the rear end of the shield shell is provided with a shield tail brush which is filled with grease, the shield tail brush plays a role in sealing between the tail shield shell and the temporary segment and between the tail shield shell and the wall of the surrounding rock after tunneling, and meanwhile, water on an excavation surface is isolated from entering the shield shell;
the segment erector is fixed at the rear part of the shield shell and used for mounting temporary segments on the wall of the excavated surrounding rock; a hydraulic jack for compressing the temporary duct piece is fixed at the rear part of the shield shell;
the duct piece conveyor is arranged on the track and used for conveying duct pieces to be assembled;
the duct piece dismantling machine, the anchor rod machine and the concrete spraying machine are arranged on a frame, and the frame is arranged on a track;
the water bin is connected to the closed slag-rock bin through a first water drainage pipe and a second water drainage pipe, and a pressure sensor is installed in the closed slag-rock bin; and a drainage pump is installed in the water sump and drains water to the ground through a third drainage pipe.
It further comprises the following steps: the rear side of the closed ballast bin is connected with a spiral conveyer, the rear side of the spiral conveyer is connected with a belt conveyer, and a mine car is arranged behind the belt conveyer; the mine car is mounted on the track.
Grouting fine aggregate concrete after the wall is formed between the temporary duct piece and the excavated surrounding rock wall, and forming a temporary supporting system together with the temporary duct piece after the fine aggregate concrete is solidified;
the segment removing machine is used for removing temporary segments in the temporary support system;
the anchor rod machine is used for driving an anchor rod into the fine stone concrete layer after the temporary duct piece is removed, and installing a tray and a net piece;
the concrete sprayer is used for spraying a layer of concrete spraying layer on the outer side of the fine stone concrete layer after the anchor rod is driven in.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1, a novel controllable closed pressure relief type shield machine is adopted to carry out excavation, slag discharge, lining and other operations under the shield of a shield, so that the safety is ensured;
2, the method has the effects of controllable water inflow, high tunneling speed, convenience in early support, small damage to surrounding rocks, better control over an overbreak range, safety, environmental protection, water control without grouting and the like;
and 3, the permanent support adopts an anchor spraying net form, so that the problem that the shield segment is not suitable under the conditions of high price and high pressure is solved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of the front portion of FIG. 1;
FIG. 3 is an enlarged view of the rear portion of FIG. 1;
in the figure: 1. a track; 2. a frame; 3. a belt conveyor; 4. a hopper; 5. a segment conveyor; 7. duct pieces to be assembled; 8. a temporary segment; 9. a first drain pipe; 10. a hydraulic jack; 11. a shield shell; 12. a screw conveyor; 13. surrounding rocks; 14. a pressure sensor; 15. a cutter head of the shield tunneling machine; 16. sealing the slag stone bin; 17. a cutter head driving device; 19. a segment erector; 21. a shield tail brush; 22. a second drain pipe; 23. a tray; 24. an anchor rod; 25. a mesh sheet; 26. a concrete spray layer; 27. a third drain pipe; 28. draining pump; 29. a water sump; 30. a mine car; 31. intercepting a ditch; 32. a concrete sprayer; 33. a water discharge hole; 34. an anchor machine; 35. a segment removal machine is adopted.
Detailed Description
The following is a specific embodiment of the present invention, which will be further described with reference to the accompanying drawings.
Example one
Referring to fig. 1 to 3, in the construction equipment for the inclined shaft, a shield machine is propelled forward in a surrounding rock 13 along the central line of the inclined shaft, and a track 1 is installed along the inclined shaft. The rear side of the shield tunneling machine is sequentially provided with a segment erector 19, a segment conveyor 5, a segment remover 35, an anchor rod machine 34, a concrete sprayer 32 and a water sump 29.
The shield machine comprises a cylindrical shield shell 11, a shield machine cutter head 15 and a cutter head driving device 17 for driving the shield machine cutter head 15 are installed at the front end of the shield shell 11, and a closed ballast bin 16 is arranged on the rear side of the shield machine cutter head 15. The rear end of the shield shell 11 is positioned between the temporary duct piece 8 and the wall of the surrounding rock 13 after tunneling; the rear end of the shield shell 11 is provided with a shield tail brush 21, the shield tail brush 21 is filled with grease, the shield tail brush 21 plays a role in sealing between the tail shield shell 11 and the temporary duct piece 8 as well as between the tail shield shell and the wall of the surrounding rock 13 after tunneling, and meanwhile, water on an excavation surface is isolated from entering the shield shell 11.
The segment erector 19 is fixed at the rear part of the shield shell 11, and the segment erector 19 is used for mounting temporary segments 8 on the wall of the excavated surrounding rock 13; and a hydraulic jack 10 for pressing the temporary segment 8 is also fixed at the rear part of the shield shell 11. And (3) grouting fine aggregate concrete after the wall is formed between the temporary duct piece 8 and the wall of the surrounding rock 13 after tunneling, and forming a temporary supporting system together with the temporary duct piece 8 after the fine aggregate concrete is solidified.
The segment removing machine 35 is arranged on the frame 2, and the frame 2 is arranged on the track 1; segment removal machine 35 is used to remove temporary segments in the temporary support system.
The anchor rod machine 34 is arranged on the frame 2, and the frame 2 is arranged on the track 1; the anchor machine 34 is used to drive the anchor rods 24 into the fine stone concrete layer after the temporary segment 8 is removed, and to install the tray 23 and the mesh sheet 25.
The concrete sprayer 32 is arranged on the frame 2, and the frame 2 is arranged on the track 1; the concrete sprayer 32 is used to spray a concrete spray layer 26 on the outside of the fine stone concrete layer after driving the anchor rods 24.
The water bin 29 is connected to the closed slag-rock bin 16 through the first water discharge pipe 9 and the second water discharge pipe 23, and a pressure sensor 14 is installed in the closed slag-rock bin 16; a drain pump 28 is installed in the sump 29, and the drain pump 28 discharges water to the ground through the third drain pipe 27.
The rear side of the closed slag stone bin 16 is connected with a spiral conveyer 12, the rear side of the spiral conveyer 12 is connected with a belt conveyer 3, and a mine car 30 is arranged behind the belt conveyer 3; the mine car 30 is mounted on the track 1.
Example two
A construction method of a slant well is based on the first embodiment, and comprises the following steps:
firstly, a shield machine is propelled forwards along the central line of an inclined shaft under the protection of a cylindrical shield shell 11; meanwhile, the temporary segments 8 are assembled through a segment assembling machine 19, and the temporary segments 8 are compressed through a hydraulic jack 10;
slag stone generated by tunneling of a shield tunneling machine cutter head 15 at the front part of the shield tunneling machine enters a closed slag stone bin 16; then, continuously discharging the slag stones in the closed slag stone bin 16 through the spiral conveyer 12; a discharge port of the spiral conveyer 12 is connected with an inverted trapezoidal hopper 4, and the hopper 4 is positioned above the belt conveyer 3; the belt conveyer 3 discharges the slag stones to the mine car 30 and then transports the slag stones to the ground;
secondly, grouting the wall between the temporary duct piece 8 and the wall of the excavated surrounding rock 13 in time;
the grouting material is fine aggregate concrete, and the solidified fine aggregate concrete and the temporary duct piece 8 form a temporary supporting system together to bear the pressure of a surrounding soil layer and the underground water pressure;
thirdly, grease is filled in the shield tail brush 21 at the rear side of the shield shell 11; the shield tail brush 21 is positioned between the temporary duct piece 8 and the wall of the excavated surrounding rock 13, the shield tail brush 21 plays a role in sealing between the tail shield shell 11 and the temporary duct piece 8 as well as the wall of the excavated surrounding rock 13, and meanwhile, water on an excavation surface is prevented from entering the shield shell 11;
fourthly, after the shield tunneling machine is constructed for 100-150 meters, the temporary duct piece 8 is removed by the duct piece removing machine 35, and a permanent supporting system is formed by timely hanging a net, drilling an anchor rod, fixing a net piece and spraying concrete;
arranging water discharge holes 33 at certain intervals in the permanent support system for centralized water guide so as to ensure the safety of the permanent support system, and arranging a water intercepting ditch 31 for preventing water gushing in the inclined shaft from reaching a working surface;
a pressure sensor 14 is arranged in a closed slag stone bin 16 of the shield tunneling machine; the closed slag stone bin 16 is connected to a water bin 29 through a first water discharge pipe 9 and a second water discharge pipe 23; a drain pump 28 is installed in the sump 29, and the drain pump 28 discharges water to the ground through the third drain pipe 27. During normal construction, one drainage pipe can meet the drainage requirement, and when the pipe is blocked, the other drainage pipe begins to drain water.
The utility model provides a pair of inclined shaft construction method utilizes novel controllable airtight pressure relief formula shield structure machine tunnelling, the stone of slagging tap and adopts interim section of jurisdiction to strut, pours into the pea gravel concrete into between interim section of jurisdiction and the tunnelling country rock section and seals water, demolishs interim section of jurisdiction after treating the concrete setting, sets up and unloads the water hole to in time anchor net spouts permanent support. And (4) performing grouting and water sealing after the wall under the condition that the temporary segment with large water inflow quantity can be used for sealing the surrounding rock. The slag stones output by the shield spiral conveyor are directly conveyed to the ground by a mine car or a belt conveyor after being conveyed to a working surface by the belt conveyor beyond 200 meters. A water pressure monitoring sensor is arranged in the closed slag stone bin, and 2 drain pipes are connected to the water bin in parallel, so that the problem of head-on water drainage and pressure relief is solved; meanwhile, a plurality of water drainage holes and water intercepting ditches are arranged in the inclined shaft, water is led to the water sump, and the water in the water sump is drained to the ground through a drainage pump.
Claims (3)
1. A shield machine advances in surrounding rocks (13) along the central line of an inclined shaft, and a track (1) is arranged along the inclined shaft;
the method is characterized in that:
a segment erector (19), a segment conveyor (5), a segment remover (35), a bolting machine (34), a concrete sprayer (32) and a water sump (29) are sequentially arranged at the rear side of the shield machine;
the shield machine comprises a cylindrical shield shell (11), a shield machine cutter head (15) and a cutter head driving device (17) for driving the shield machine cutter head (15) are mounted at the front end of the shield shell (11), and a closed ballast bin (16) is arranged on the rear side of the shield machine cutter head (15);
the rear end of the shield shell (11) is positioned between the temporary duct piece (8) and the wall of the excavated surrounding rock (13); a shield tail brush (21) is arranged at the rear end of the shield shell (11), the shield tail brush (21) is filled with grease, the shield tail brush (21) plays a role in sealing between the tail shield shell (11) and the temporary duct piece (8) as well as between the tail shield shell and the wall of the wall rock (13) after tunneling, and meanwhile, water on the excavation surface is isolated from entering the shield shell (11);
the segment erector (19) is fixed at the rear part of the shield shell (11), and the segment erector (19) is used for installing temporary segments (8) on the wall of the excavated surrounding rock (13); a hydraulic jack (10) for compacting the temporary duct piece (8) is also fixed at the rear part of the shield shell (11);
the segment conveyor (5) is arranged on the track (1), and the segment conveyor (5) is used for conveying segments (7) to be assembled;
the segment dismantling machine (35), the anchor rod machine (34) and the concrete sprayer (32) are arranged on the frame (2), and the frame (2) is arranged on the track (1);
the water bin (29) is connected to the closed slag-rock bin (16) through a first water drainage pipe (9) and a second water drainage pipe (22), and a pressure sensor (14) is installed in the closed slag-rock bin (16); a drainage pump (28) is installed in the water bin (29), and the drainage pump (28) drains water to the ground through a third drainage pipe (27).
2. The slant well construction apparatus according to claim 1, wherein: the rear side of the closed slag stone bin (16) is connected with a spiral conveyer (12), the rear side of the spiral conveyer (12) is connected with a belt conveyer (3), and a mine car (30) is arranged behind the belt conveyer (3); the mine car (30) is installed on the track (1).
3. The slant well construction apparatus according to claim 1, wherein: grouting fine aggregate concrete after the wall is grouted between the temporary duct piece (8) and the wall of the excavated surrounding rock (13), and forming a temporary supporting system together with the temporary duct piece (8) after the fine aggregate concrete is solidified;
the segment removing machine (35) is used for removing temporary segments (8) in the temporary support system;
the anchor rod machine (34) is used for driving anchor rods (24) into the fine stone concrete layer after the temporary duct piece (8) is removed, and installing a tray (23) and a net piece (25);
the concrete sprayer (32) is used for spraying a layer of concrete spraying layer (26) on the outer side of the fine stone concrete layer after the anchor rod (24) is driven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020861906.3U CN212225213U (en) | 2020-05-21 | 2020-05-21 | Inclined shaft construction equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020861906.3U CN212225213U (en) | 2020-05-21 | 2020-05-21 | Inclined shaft construction equipment |
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| CN212225213U true CN212225213U (en) | 2020-12-25 |
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| CN202020861906.3U Active CN212225213U (en) | 2020-05-21 | 2020-05-21 | Inclined shaft construction equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425207A (en) * | 2020-05-21 | 2020-07-17 | 中煤第五建设有限公司 | Inclined shaft construction method and equipment |
| CN113931646A (en) * | 2021-10-13 | 2022-01-14 | 中煤第三建设（集团）有限责任公司 | Water control system and method for open type TBM construction of ultra-long inclined shaft of coal mine |
-
2020
- 2020-05-21 CN CN202020861906.3U patent/CN212225213U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425207A (en) * | 2020-05-21 | 2020-07-17 | 中煤第五建设有限公司 | Inclined shaft construction method and equipment |
| CN111425207B (en) * | 2020-05-21 | 2024-07-02 | 中煤第五建设有限公司 | Inclined shaft construction method and equipment |
| CN113931646A (en) * | 2021-10-13 | 2022-01-14 | 中煤第三建设（集团）有限责任公司 | Water control system and method for open type TBM construction of ultra-long inclined shaft of coal mine |
| CN113931646B (en) * | 2021-10-13 | 2024-03-29 | 中煤第三建设（集团）有限责任公司 | Water control system and method for open TBM construction of special inclined shaft of coal mine |
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