CN212406720U - Shaft heading machine - Google Patents
Shaft heading machine Download PDFInfo
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- CN212406720U CN212406720U CN202022931423.9U CN202022931423U CN212406720U CN 212406720 U CN212406720 U CN 212406720U CN 202022931423 U CN202022931423 U CN 202022931423U CN 212406720 U CN212406720 U CN 212406720U
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Abstract
The utility model discloses a shaft entry driving machine, including ground platform, ground platform has installed flexible main drive and pipeline extension system, flexible main drive connects the shield body, the shield body is provided with folding blade disc and mud circulation system, mud circulation system connects the pipeline extension system. The shaft boring machine is provided with the telescopic main drive and the slurry circulating system, the telescopic main drive improves the difficulty removing capability of the shaft boring machine, the geological adaptability is strong, and the single-step boring distance is improved, so that the boring efficiency is improved; the mud circulation system can reduce the risks of pump blockage, pipe blockage, stagnation and the like.
Description
Technical Field
The utility model relates to a tunnel construction technical field, in particular to shaft entry driving machine.
Background
The shaft tunnel engineering mostly adopts open cut or drilling and blasting method, the method has the limitations of low construction efficiency, high safety risk, large environmental pollution and the like, and the difficult problems of difficult slag discharging and the like can be faced in the large and deep shaft tunnel construction.
With the development of tunnel engineering technology, a shaft tunneling machine is slowly applied to shaft tunnel engineering, but the traditional shaft tunneling machine has the following defects due to immature technology: by adopting the middle hoisting of the tunnel, a very high support frame can be arranged at the opening of the tunnel, so that the construction cost is increased, and inconvenience is brought to the disassembly and assembly of equipment; the single-step tunneling distance is short, and the construction efficiency is low; the risks of pump blockage, pipe blockage, stagnant discharge and the like are easy to occur.
Therefore, how to provide a shaft boring machine which can solve the problems that the shaft boring machine is high in construction cost, low in efficiency, prone to pump blockage, pipe blockage, row stagnation and the like is a technical problem which needs to be solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a shaft boring machine, which is provided with a telescopic main drive and a slurry circulating system, wherein the telescopic main drive improves the escaping capability of the shaft boring machine, has strong geological adaptability and simultaneously improves the single-step boring distance, thereby improving the boring efficiency; the mud circulation system can reduce the risks of pump blockage, pipe blockage, stagnation and the like.
In order to realize the above purpose, the utility model provides a shaft heading machine, including ground platform, ground platform has installed flexible main drive and pipeline extension system, flexible main drive connects the shield body, the shield body is provided with folding blade disc and mud circulation system, mud circulation system connects the pipeline extension system.
Preferably, the ground platform is provided with a stranded wire hoisting system, the upper side of the shield body is provided with a steel pipe sheet, and the stranded wire hoisting system is connected with the steel pipe sheet.
Preferably, the ground platform is provided with a main propulsion oil cylinder, and the main propulsion oil cylinder is positioned above the steel pipe sheet.
Preferably, the ground platform is provided with a steel pipe sheet adjuster, the steel pipe sheet adjuster comprises a supporting base, a radial oil cylinder, a mounting seat and a fine adjustment oil cylinder, the supporting base is fixed on the ground platform, two ends of the radial oil cylinder are respectively hinged with the supporting base and the mounting seat, the fine adjustment oil cylinder is located on two sides of the mounting seat, and the mounting seat is located on the outer side of the steel pipe sheet.
Preferably, a lateral stabilizer and a shield body inner side plate are arranged on the outer side of the shield body, the lateral stabilizer comprises an oil cylinder base, a shoe supporting oil cylinder, a shoe supporting and a guide plate, the oil cylinder base is fixed on the shield body inner side plate, the shoe supporting oil cylinder is arranged on the oil cylinder base and connected with the shoe supporting, and the guide plate limits the shoe supporting to move along the radial direction.
Preferably, flexible main drive includes main drive, flexible hydro-cylinder, supporting pedestal and driving motor, the driving motor drive the main drive, the supporting pedestal is fixed in shield body interior plate, flexible hydro-cylinder install in the supporting pedestal is connected the main drive.
Preferably, flexible main drive prevents turning round the piece including main drive, the shield body is equipped with the draw-in groove, main drive prevent turning round the piece with the draw-in groove cooperation.
Preferably, the outer side of the main drive is provided with a main drive outer seal, and the inner side of the main drive is provided with a main drive inner seal plate.
Preferably, the stranded wire hoisting system comprises a driving winch, a lead frame, a stranded wire and a steering wheel, wherein the steering wheel is positioned at the opening of the vertical shaft, the driving winch is arranged on the lead frame and connected with the stranded wire, and the stranded wire penetrates through the steering wheel and then is connected with the steel pipe sheet.
Preferably, the mud circulating system comprises a high-power mud pump, a motor, a mud outlet pipe, a mud inlet pipe, a mud discharging pipe and a water inlet pipe.
Compared with the prior art, the utility model provides a shaft boring machine includes ground platform, and ground platform has installed flexible main drive and pipeline extension system, and flexible main drive is connected with the shield body, and the shield body is provided with folding blade disc and mud circulation system, and mud circulation system connects the pipeline extension system; the vertical shaft tunneling machine drives the shield body and the folding cutter head thereof through a telescopic main drive, realizes the tunneling of a vertical shaft through the folding cutter head, and realizes the outward discharge of slurry in the tunneling process through a slurry circulation system and a pipeline extension system; the shaft boring machine is provided with a telescopic main drive and a slurry circulating system, the telescopic main drive improves the difficulty removing capability of the shaft boring machine, the geological adaptability is strong, and meanwhile, the single-step boring distance is improved, so that the boring efficiency is improved; the mud circulation system can reduce the risks of pump blockage, pipe blockage, stagnation and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a shaft boring machine provided in an embodiment of the present invention;
figure 2 is a top plan view of the shaft boring machine of figure 1;
FIG. 3 is a schematic structural view of the shield and the telescopic main drive in FIG. 1;
FIG. 4 is a top view of the shield and the telescoping main drive of FIG. 3;
FIG. 5 is a schematic diagram of the mud circulation system of FIG. 1;
fig. 6 is a schematic structural view of the steel segment adjuster in fig. 2.
Wherein:
1-folding cutterhead, 2-shield body, 3-telescopic main drive, 4-steel pipe, 5-ground platform, 6-stranded wire hoisting system, 7-pipeline extension system, 8-main propulsion oil cylinder, 9-mud circulation system, 10-steel pipe adjuster, 201-lateral stabilizer, 202-shield body inner side plate, 203-clamping groove, 301-main drive, 302-telescopic oil cylinder, 303-drive supporting base, 304-drive motor, 305-main drive outer seal, 306-main drive inner seal plate, 307-main drive anti-twisting block, 601-drive winch, 602-lead frame, 603-stranded wire, 604-steering wheel, 701-hydraulic electric pipeline extension device, 702-mud pipeline extension device, 901-high-power mud pump slurry pump, 902-motor, 903-slurry outlet pipe, 904-slurry inlet pipe, 905-slurry outlet pipe, 906-water inlet pipe, 1001-adjuster supporting base, 1002-radial oil cylinder, 1003-mounting base, 1004-fine adjustment oil cylinder, 20101-oil cylinder base, 20102-shoe supporting oil cylinder, 20103-shoe supporting and 20104-guide plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 6, wherein fig. 1 is a schematic structural diagram of a shaft boring machine according to an embodiment of the present invention, fig. 2 is a top view of the shaft boring machine in fig. 1, fig. 3 is a schematic structural diagram of a shield and a telescopic main drive in fig. 1, fig. 4 is a top view of the shield and the telescopic main drive in fig. 3, fig. 5 is a schematic structural diagram of a mud circulation system in fig. 1, and fig. 6 is a schematic structural diagram of a steel segment adjuster in fig. 2.
In a first specific implementation mode, the utility model provides a shaft boring machine includes ground platform 5, and ground platform 5 sets up in the week side of shaft and not the shaft directly over, and ground platform 5 has installed flexible main drive 3 and pipeline extension system 7, and flexible main drive 3 connects the shield body 2, and the shield body 2 is provided with folding blade disc 1 and mud circulation system 9, and mud circulation system 9 connects pipeline extension system 7.
In the present embodiment, the telescopic main drive 3, the shield body 2 and the folding cutterhead 1 constitute the main machine equipment extending into the shaft. The foldable cutter head 1 is positioned at the bottom of the vertical shaft, is a key part for excavation and tunneling, can adjust a folding angle according to geological conditions, changes the taper angle of the cutter head, improves the geological adaptability of the cutter head, and enables the tunneling machine to have the capability of coping with complex geological conditions; the shield body 2 is positioned above the folding cutter head 1 and is used for supporting surrounding rocks and protecting the telescopic main drive 3; the pipe extension system 7 comprises a hydraulic electric pipe extension 701 and a mud pipe extension 702, and the mud circulation system 9 is connected with the mud pipe extension 702 so as to discharge mud at the bottom of the shaft out of the shaft.
In the tunneling process, a telescopic main drive 3 is positioned in a shield body 2 and is connected with a folding cutter head 1, the shaft tunneling machine drives the shield body 2 and the folding cutter head 1 through the telescopic main drive 3, realizes the tunneling of a shaft through the folding cutter head 1, and realizes the outward discharge of slurry in the tunneling process through a slurry circulating system 9 and a pipeline extending system 7; the shaft boring machine is provided with a telescopic main drive 3 and a slurry circulating system 9, the telescopic main drive 3 improves the difficulty removing capability of the shaft boring machine, the geological adaptability is strong, and the single-step boring distance is improved, so that the boring efficiency is improved; the mud circulation system 9 can reduce the risks of pump blockage, pipe blockage, stagnation and discharge and the like.
On the basis, the ground platform 5 is provided with a stranded wire hoisting system 6, the upper side of the shield body 2 is provided with a steel pipe sheet 4, and the stranded wire hoisting system 6 is connected with the steel pipe sheet 4.
In the embodiment, the ground platform 5 is located on the ground at the periphery of the shaft, and is used for supporting other supporting equipment; the stranded wire hoisting system 6 is positioned on the ground platform 5 and is used for hoisting the steel pipe piece 4 to prevent the host equipment from suddenly dropping due to unstable geology.
Specifically, the stranded wire hoisting system 6 comprises a driving winch 601, a lead frame 602, a stranded wire 603 and a steering wheel 604, wherein the steering wheel 604 is located at the opening of the shaft, the driving winch 601 is arranged on the lead frame 602 and connected with the stranded wire 603, the stranded wire 603 penetrates through the steering wheel 604 and then is connected with the steel pipe 4, and the steering wheel 604 plays a guiding role in guiding the stranded wire 603, so that the stranded wire 603 is prevented from being damaged due to bending and steering at the opening of the shaft.
In addition, the ground platform 5 is also provided with a main propulsion oil cylinder 8, the main propulsion oil cylinder 8 is positioned above the steel pipe sheet 4 and is used for providing downward propulsion force for the steel pipe sheet 4, so that the steel pipe sheet 4 and the host machine equipment move downwards together and support the wall of the vertical shaft.
More specifically, the steel pipe pieces 4 are ring-shaped, the steel pipe pieces 4 are positioned above the shield body 2 and are supporting means for supporting the wall of the hole, the steel pipe piece 4 of the bottommost ring is welded to the shield body 2, the steel pipe pieces 4 of more rings are arranged upward on the ring steel pipe pieces 4, and the connection mode between the steel pipe pieces 4 is welding. The steel pipe sheet 4 has high structural strength, the connection strength and the sealing performance of the steel pipe sheet 4 are improved in a welding connection mode, and the geological adaptability of the shaft heading machine is improved.
The mud circulation system 9 comprises, among other things, a high power mud pump 901, a motor 902, a mud outlet pipe 903, a mud inlet pipe 904, a mud discharge pipe 905 and a water inlet pipe 906.
In the embodiment, the motor 902 is connected with and drives the high-power slurry pump 901, and the high-power slurry pump 901 is respectively communicated with the slurry outlet pipe 903, the slurry inlet pipe 904, the slurry outlet pipe 905 and the water inlet pipe 906. The high-power slurry pump 901 can improve the slurry discharge amount, and allows the large-diameter slurry discharge pipe 905 and the slurry outlet pipe 903 to be adopted, so that the risks of pump blockage, pipe blockage, row stagnation and the like are reduced. The slurry discharge pipe 905 has a certain bending angle and has a certain stirring effect on slurry. The mud circulating system 9 has high power and can effectively deal with the mud inrush and water inrush phenomena under complex geology.
It should be emphasized that, for solving the problems that the shaft boring machine has high construction cost, low efficiency, easy occurrence of pump blockage, pipe blockage, stagnation and the like, the utility model provides a shaft boring machine with a main machine adopting peripheral hoisting and equipped with a telescopic main drive 3 and a high-power slurry circulating system 9. The ground platform 5 and the periphery thereof are hoisted, so that the height of ground facilities is reduced, and the disassembly and assembly efficiency of ground equipment is improved; the telescopic main drive 3 improves the escaping capability of the shaft heading machine, has strong geological adaptability and simultaneously improves the single-step heading distance, thereby improving the heading efficiency; the slurry circulating system 9 is provided with a high-power slurry pump 901 and a large-diameter slurry discharge pipe 905, so that the risks of pump blockage, pipe blockage, row stagnation and the like can be reduced.
In addition, the ground platform 5 is provided with the steel pipe sheet regulators 10, and the steel pipe sheet regulators 10 are uniformly distributed on the periphery of the steel pipe sheets 4, so that the installation coaxiality of the steel pipe sheets 4 is regulated, and the installation efficiency of the steel pipe sheets 4 is improved. The steel pipe sheet adjuster 10 comprises an adjuster support base 1001, a radial oil cylinder 1002, a mounting seat 1003 and fine adjustment oil cylinders 1004, wherein the adjuster support base 1001 is fixed on the ground platform 5, two ends of the radial oil cylinder 1002 are hinged to the adjuster support base 1001 and the mounting seat 1003 respectively, the mounting seat 1003 is arranged on the outer side of the steel pipe sheet 4, the number of the fine adjustment oil cylinders 1004 is two, and the two fine adjustment oil cylinders 1004 are located on two sides of the mounting seat 1003 respectively. The fine adjustment cylinder 1004 is used for adjusting the circumferential movement of the mounting seat 1003, the radial cylinder 1002 is used for adjusting the radial movement of the mounting seat 1003, and the coaxiality of the steel pipe sheet 4 can be adjusted by controlling the movement of the mounting seat 1003 in each direction.
Besides, the outer side of the shield body 2 is provided with lateral stabilizers 201 and a shield body inner side plate 202, the lateral stabilizers 201 are uniformly distributed on the periphery of the shield body 2, and the main function is to extend outwards to tightly support the hole wall and balance the torque of the folding cutter head 1. The lateral stabilizer 201 comprises an oil cylinder base 20101, a shoe supporting oil cylinder 20102, a shoe supporting 20103 and a guide plate 20104, the oil cylinder base 20101 is fixed on an inner side plate 202 of a shield body, a cylinder body of the shoe supporting oil cylinder 20102 is arranged on the oil cylinder base 20101, a rod body of the shoe supporting oil cylinder 20102 is connected with the shoe supporting 20103, the shoe supporting oil cylinder 20102 can control the outward extending distance of the shoe supporting 20103, the guide plate 20104 is located on the outer side of the shoe supporting 20103, and the guide plate 20104 limits that the shoe supporting 20103 can only move in the radial direction.
Besides, the telescopic main drive 3 comprises a main drive anti-twisting block 307, the shield body 2 is provided with a clamping groove 203, and the anti-twisting block 307 is matched with the clamping groove 203. The anti-twisting blocks 307 are located on the periphery of the main drive 301, are symmetrically arranged, and are installed in the clamping grooves 203 of the shield body 2 to balance the driving torque of the main drive 301, so that the anti-twisting purpose is achieved.
In this embodiment, the telescopic main drive 3 includes a main drive 301, a telescopic cylinder 302, a drive support base 303 and a drive motor 304, the drive motor 304 drives the main drive 301, the drive support base 303 is fixed to the shield inner side plate 202, and the telescopic cylinder 302 is mounted on the drive support base 303 and connected to the main drive 301. The main drive 301 is used for providing a driving torque for the folding cutter head 1; the telescopic oil cylinder 302 is used for providing driving force for downward telescopic movement of the main drive 301, so that the telescopic main drive 3 has a telescopic function, the escaping capability of the folding cutter head 1 is improved, and the problem of jamming caused by geological sudden change is solved; the driving support base 303 is used for providing support reaction force for the telescopic oil cylinder 302; the drive motor 304 is a power source of the main drive 301.
In one specific embodiment, a primary drive outer seal 305 is provided on the outside of the primary drive 301 and a primary drive inner seal plate 306 is provided on the inside of the primary drive 301. The main drive outer seal 305 is positioned at the joint of the main drive 301 and the shield body inner side plate 202, plays a role in sealing, and prevents mud from spreading upwards from a fit gap between the main drive 301 and the shield body inner side plate 202; the primary drive inner closure plate 306 is located inside the primary drive 301 and acts as a seal to prevent mud from spreading up the inside of the primary drive, submerging the drive motor 304.
In this embodiment, the main drive 301 is internally and externally provided with seals, the slurry level at the bottom of the shaft can be set higher, and the slurry can reach a higher position upwards along the gap between the steel pipe piece 4 and the tunnel wall. Meanwhile, as the slurry liquid level is high, a slurry pump with higher power and a slurry discharge pipe 905 with larger diameter can be configured, the slurry discharge flow is increased, and the risks of pump blockage, pipe blockage and discharge stagnation are reduced.
In the specific process, the lateral stabilizer 201 extends outwards to enable the supporting shoes 20103 to tightly support the wall of the hole, then the folding cutter head 1 starts to carry out rotary tunneling, the slurry circulating system 9 starts to work, the muck is discharged out of the hole through the slurry circulating system 9, in the tunneling process, the telescopic main drive 3 slowly pushes the folding cutter head 1 to move downwards under the action of the telescopic oil cylinder 302 to increase the single-step tunneling distance, the main propulsion oil cylinder 8 can be adopted to push the steel pipe sheet 4 downwards when necessary so as to increase the thrust of the folding cutter head 1, after the single tunneling is finished, the lateral stabilizer 201 is retracted, the stranded wire hoisting system 6 lowers the stranded wire 603, the pipeline extending system 7 extends the pipelines of the hydraulic electric pipeline extending device 701 and the slurry pipeline extending device 702 downwards, then the telescopic oil cylinder 302 is slowly retracted, and the main machine equipment and the steel pipe sheet 4 slowly descend under the action of gravity, if the slag soil is blocked, the main propulsion oil cylinder 8 can be adopted to push the steel pipe sheet 4 to move downwards, and the next tunneling can be started when the tunneling process in one step is completed.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
It is right above the utility model provides a shaft heading machine has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. The shaft heading machine is characterized by comprising a ground platform (5), wherein a telescopic main drive (3) and a pipeline extension system (7) are installed on the ground platform (5), the telescopic main drive (3) is connected with a shield body (2), the shield body (2) is provided with a folding cutter head (1) and a slurry circulation system (9), and the slurry circulation system (9) is connected with the pipeline extension system (7).
2. Shaft boring machine according to claim 1, characterized in that the ground platform (5) is equipped with a strand hoisting system (6), the upper side of the shield (2) is provided with a steel pipe sheet (4), and the strand hoisting system (6) is connected with the steel pipe sheet (4).
3. Shaft boring machine according to claim 2, characterised in that the ground platform (5) is fitted with a main propulsion cylinder (8), the main propulsion cylinder (8) being located above the steel tube sheet (4).
4. The shaft boring machine according to claim 2, wherein the ground platform (5) is provided with a steel pipe sheet adjuster (10), the steel pipe sheet adjuster (10) comprises an adjuster support base (1001), a radial cylinder (1002), a mounting base (1003) and a fine adjustment cylinder (1004), the adjuster support base (1001) is fixed on the ground platform (5), two ends of the radial cylinder (1002) are respectively hinged with the adjuster support base (1001) and the mounting base (1003), the fine adjustment cylinder (1004) is positioned on two sides of the mounting base (1003), and the mounting base (1003) is positioned on the outer side of the steel pipe sheet (4).
5. The shaft boring machine according to claim 1, wherein a lateral stabilizer (201) and a shield inner side plate (202) are provided on the outer side of the shield body (2), the lateral stabilizer (201) comprises a cylinder base (20101), a shoe supporting cylinder (20102), a shoe supporting (20103) and a guide plate (20104), the cylinder base (20101) is fixed on the shield inner side plate (202), the shoe supporting cylinder (20102) is mounted on the cylinder base (20101) and connected with the shoe supporting (20103), and the guide plate (20104) limits the shoe supporting (20103) from moving in the radial direction.
6. Shaft boring machine according to claim 5, characterised in that the telescopic main drive (3) comprises a main drive (301), a telescopic cylinder (302), a drive support base (303) and a drive motor (304), the drive motor (304) drives the main drive (301), the drive support base (303) is fixed to the shield inner side plate (202), and the telescopic cylinder (302) is mounted on the drive support base (303) and connected to the main drive (301).
7. Shaft boring machine according to claim 6, characterised in that the telescopic main drive (3) comprises a main drive anti-twist block (307), the shield body (2) being provided with a catch (203), the main drive anti-twist block (307) cooperating with the catch (203).
8. Shaft boring machine according to claim 6, characterised in that the outside of the primary drive (301) is provided with a primary drive outer seal (305) and the inside of the primary drive (301) is provided with a primary drive inner seal plate (306).
9. The shaft boring machine according to any one of claims 2 to 4, wherein the strand hoisting system (6) comprises a driving winch (601), a lead frame (602), a strand (603) and a steering wheel (604), the steering wheel (604) is located at the opening of the shaft, the driving winch (601) is arranged on the lead frame (602) and connected with the strand (603), and the strand (603) penetrates through the steering wheel (604) and then is connected with the steel pipe (4).
10. A shaft boring machine according to any one of claims 1 to 8, characterised in that the mud circulation system (9) comprises a high power mud pump (901), a motor (902), a mud pipe (903), a mud pipe (904), a mud pipe (905) and a water pipe (906).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022931423.9U CN212406720U (en) | 2020-12-10 | 2020-12-10 | Shaft heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022931423.9U CN212406720U (en) | 2020-12-10 | 2020-12-10 | Shaft heading machine |
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| CN212406720U true CN212406720U (en) | 2021-01-26 |
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| CN202022931423.9U Active CN212406720U (en) | 2020-12-10 | 2020-12-10 | Shaft heading machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775341A (en) * | 2021-11-11 | 2021-12-10 | 中国铁建重工集团股份有限公司 | Steel pipe sheet synchronous follow-up construction method suitable for shaft tunneling |
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2020
- 2020-12-10 CN CN202022931423.9U patent/CN212406720U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775341A (en) * | 2021-11-11 | 2021-12-10 | 中国铁建重工集团股份有限公司 | Steel pipe sheet synchronous follow-up construction method suitable for shaft tunneling |
| CN113775341B (en) * | 2021-11-11 | 2022-02-11 | 中国铁建重工集团股份有限公司 | Steel pipe sheet synchronous follow-up construction method suitable for shaft tunneling |
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