CN115434725A - Shield tunnel compaction grouting equipment - Google Patents
Shield tunnel compaction grouting equipment Download PDFInfo
- Publication number
- CN115434725A CN115434725A CN202210950824.XA CN202210950824A CN115434725A CN 115434725 A CN115434725 A CN 115434725A CN 202210950824 A CN202210950824 A CN 202210950824A CN 115434725 A CN115434725 A CN 115434725A
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- Prior art keywords
- grouting
- slip casting
- pipe
- pipes
- shield tunnel
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- 238000005056 compaction Methods 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 239000011440 grout Substances 0.000 claims abstract description 14
- 238000007569 slipcasting Methods 0.000 claims description 39
- 230000005540 biological transmission Effects 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 7
- 239000012141 concentrate Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002689 soil Substances 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses shield tunnel compaction grouting equipment which comprises an underground tunnel and a grouting device, wherein the grouting device moves in the underground tunnel to perform grouting on the underground tunnel; the grouting device comprises a grouting pipe and a grouting machine body, a grouting hole is formed in the side wall of the underground tunnel and corresponds to the grouting pipe, the grouting machine body injects grout into the corresponding grouting hole through the grouting pipe, and the grouting pipe is installed on the grouting machine body through a grouting mechanism; when the grouting mechanism is used, the grouting mechanism is arranged on the grouting machine body, the grouting machine body is driven to move when moving, and the position of the grouting pipe is changed by the grouting mechanism, so that grout is injected into a grouting hole formed in the side wall of the underground tunnel, the effect of timely grouting to stabilize the structure of the underground tunnel is achieved, and the safety of the shield tunnel is enhanced.
Description
Technical Field
The invention belongs to the technical field of shield tunnels, and particularly relates to shield tunnel compaction grouting equipment.
Background
Along with the acceleration of the urbanization process, the road construction engineering is becoming increasingly large, cracks or fissures are easy to generate in the shield tunnel during the expansion and construction of underground facilities of the road, and potential safety hazards caused by the cracks are not ignored, so that grouting reinforcement needs to be carried out on the cracked area of the shield tunnel to ensure the safety of the shield tunnel;
the compaction grouting refers to that thick grout is poured into a hole drilled in foundation soil in advance and is extruded to soil body, grout bubbles are formed at the grouting position, and the diffusion of the grout compresses the surrounding soil body. The slurry completely replaces the soil body in the grouting range, a large plastic deformation area exists in the adjacent grouting area, and the soil body in the area far away from the slurry bubble generates elastic deformation, so that the density of the soil is obviously increased, and the aim of reinforcing the structural strength in the shield subline area is fulfilled;
however, the existing compaction grouting is usually performed one by one through a grouting machine, grout is injected into a grouting hole which is formed in the shield tunnel in advance, for grouting in a top area and a large area of a side wall, the efficiency of one grouting is low, grouting operation in the top area is inconvenient, the whole grouting reinforcement time is long, and potential hazards are brought to operators and shield tunnel areas.
Disclosure of Invention
The invention aims to provide shield tunnel compaction grouting equipment, which solves the problems that for grouting of a top area and a larger side wall area, the efficiency of one grouting is lower, the grouting operation of the top area is inconvenient, the whole grouting reinforcement time is longer, and hidden dangers are brought to operators and the safety of a shield tunnel area.
In order to achieve the purpose, the invention adopts the following technical scheme:
the shield tunnel compaction grouting equipment comprises an underground tunnel and a grouting device, wherein the grouting device moves in the underground tunnel to perform grouting on the underground tunnel; the grouting device comprises a grouting pipe and a grouting machine body, grouting holes are formed in the side wall of the underground tunnel and correspond to the grouting pipe, the grouting machine body injects grout into the corresponding grouting holes through the grouting pipe, and the grouting pipe is installed on the grouting machine body through a grouting mechanism.
Preferably, the grouting mechanism comprises an arc-shaped track, the arc-shaped track is hollowed, a plurality of grouting heads are installed in a sliding mode, the grouting heads are communicated with the grouting machine body through grouting pipes, and the grouting pipes are corrugated pipes;
one side of slip casting organism is rotated and is installed and rotate the post, rotate through support fixed connection between post and the arc track inner wall, fixedly connected with ring gear on the surface of rotation post, the outside meshing transmission of ring gear has the gear, gear fixed mounting is on driving motor's output shaft, driving motor fixed mounting is on the lateral wall of slip casting organism.
Preferably, the grouting pipes are divided into two groups, the two groups of grouting pipes are symmetrically distributed on two sides of the bracket, the two groups of grouting heads are arranged on the arc-shaped track, the grouting pipes correspond to the grouting heads one by one,
rotate the post middle part and be equipped with the concentration pipe, it is a plurality of the slip casting pipe assembles and is connected to concentrate on the pipe, concentrate and be connected through rotary joint between pipe and the slip casting organism.
Preferably, the slip casting head includes slip casting end and sliding seat, sliding seat slidable mounting is on the arc track, just it has the flexible pipe to run through on the sliding seat, flexible pipe one end and slip casting pipe intercommunication, intercommunication between the other end and the slip casting end, the slip casting end sets up T type structure, and it has the telescopic link to articulate on the great one in slip casting end both ends, the base of telescopic link is fixed on the sliding seat.
Preferably, the number of the telescopic rods is at least two, and the telescopic rods are uniformly arranged along the circumferential direction of the grouting end.
Preferably, the bigger one end in slip casting end both ends is gone up the embedding and is had annular sealing washer, the sealing washer is located the one side that deviates from the flexible tube.
Preferably, a transmission mechanism is arranged on the sliding seat and comprises small transmission teeth, the small transmission teeth are rotatably mounted on the side edge of the sliding seat and connected with a driving motor fixed on the sliding seat, and tooth parts meshed with the small transmission teeth are arranged on the side wall of the arc-shaped track.
The invention has the technical effects and advantages that: compared with the prior art, the compaction and grouting equipment for the shield tunnel provided by the invention has the following advantages:
1. when the grouting mechanism is used, the grouting mechanism is arranged on the grouting machine body, the grouting machine body drives the grouting mechanism to move when moving, and the position of the grouting pipe is changed by using the grouting mechanism, so that grout is injected into the grouting hole formed in the side wall of the underground tunnel, the effect of timely grouting and stabilizing the structure of the underground tunnel is achieved, and the safety of the shield tunnel is enhanced.
2. According to the invention, the arc-shaped track in the grouting mechanism is arranged, the grouting heads slide in the arc-shaped track, so that the grouting position is adjusted, and the multiple grouting heads can synchronously work after the adjusting positions are aligned with the grouting holes.
3. According to the invention, the structure of the grouting head is designed, so that when the grouting head performs grouting on the grouting hole, firstly, the controller controls the electric telescopic rod to extend, the telescopic rod drives the grouting end to be inserted into the grouting hole, and the end part of the grouting end with the T-shaped structure can cover the end surface of the grouting hole, so that the excessive grouting splashing condition is weakened, the state of overflowing from a gap between the grouting end and the grouting hole is adjusted, on one hand, the waste of grout is reduced, and once the grout overflows from the grouting end, the grouting is indicated to be finished, and the grouting is stopped immediately; on the other hand, the condition that excessive grouting exists and the grouting is sprayed from the grouting hole is weakened.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram according to an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a portion of the structure at a in fig. 1 according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the front view of the embodiment of the invention.
FIG. 4 is a side view of the present invention.
FIG. 5 is a schematic cross-sectional view of B-B in FIG. 4 according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a shield tunnel compaction grouting device as shown in figures 1-5,
example 1:
the grouting device moves in the underground tunnel 1 and performs grouting on the underground tunnel 1; the grouting device comprises a grouting pipe 2 and a grouting machine body 3, a grouting hole 4 is formed in the side wall of the underground tunnel 1, the grouting hole 4 corresponds to the grouting pipe 2, the grouting machine body 3 injects grout into the corresponding grouting hole 4 through the grouting pipe 2, and the grouting pipe 2 is installed on the grouting machine body 3 through a grouting mechanism 5. When using, install slip casting mechanism 5 on slip casting organism 3, drive slip casting mechanism 5 when slip casting organism 3 removes, utilize slip casting mechanism 5 to change the position of slip casting pipe 2 to inject the thick liquid in the injected hole 4 of seting up on the lateral wall of underground tunnel 1, play the effect of the stable underground tunnel 1 structure of in time slip casting, strengthen shield tunnel's safety.
Further, the grouting mechanism 5 comprises an arc-shaped rail 51, the arc-shaped rail 51 is hollow, a plurality of grouting heads 52 are slidably mounted on the arc-shaped rail 51, the grouting heads 52 are communicated with the grouting machine body 3 through grouting pipes 2, and the grouting pipes 2 are corrugated pipes;
one side of slip casting organism 3 rotates installs and rotates post 53, rotate between post 53 and the arc track 51 inner wall through support 54 fixed connection, rotate fixedly connected with ring gear 55 on the surface of post 53, the outside meshing transmission of ring gear 55 has gear 56, gear 56 fixed mounting is on driving motor 57's output shaft, driving motor 57 fixed mounting is on the lateral wall of slip casting organism 3. As the top, the side wall and the bottom of the shield tunnel are required to be punched, grouted and reinforced, the grouting head 52 slides in the arc-shaped track 51 by arranging the arc-shaped track 51 in the grouting mechanism 5, so that the grouting position is adjusted, and the plurality of grouting heads 52 can synchronously work after adjusting the positions to be aligned with the grouting holes 4; meanwhile, the length of the grouting pipe 2 made of the corrugated pipe is elastically changed in the process of moving along with the grouting head 52, so that the grouting head 52 can move more smoothly; when grouting is needed to be performed on the top or bottom grouting holes 4, only the driving motor 57 arranged on the side wall of the grouting machine body 3 needs to be started, the driving motor 57 can drive the rotating column 53 to rotate through meshing transmission of the gear 56, the rotating column 53 drives the whole arc-shaped track 51 to rotate through the bracket 54, and grouting position adjustment in the circumferential direction of the grouting head 52 is achieved, so that convenience and rapidness are achieved; wherein the outer surface of the arc-shaped track 51 matches with the inner circle of the underground tunnel 1.
Further, the grouting pipes 2 are divided into two groups, the two groups of grouting pipes 2 are symmetrically distributed on two sides of the support 54, two groups of grouting heads 52 are arranged on the arc-shaped track 51, and the grouting pipes 2 correspond to the grouting heads 52 one by one;
rotate the post 53 middle part and be equipped with concentration pipe 6, it is a plurality of slip casting pipe 2 assembles and is connected to concentrate on the pipe 6, concentrate and be connected through rotary joint between pipe 6 and the slip casting organism 3. Through the multi-group design of the grouting pipes 2 and the grouting heads 52, the area of the area covered by the grouting heads 52 is further increased, so that the grouting holes 4 in the area range can be completed by one-time grouting, the adjusting efficiency is further increased, or the grouting heads 52 and the grouting pipes 2 arranged in a plurality of groups can be used as alternatives, when one group is damaged, the other group can be replaced, and the effective operation time of the whole grouting mechanism 5 is prolonged; and the arrangement of the rotating structure ensures that the grouting mechanism 5 can not interfere the normal slurry conveying of the grouting machine body 3 when rotating.
Example 2:
example 2 differs from example 1 in that: the grouting head 52 comprises a grouting end 521 and a sliding seat 522, the sliding seat 522 is slidably mounted on an arc-shaped track, a flexible pipe 523 penetrates through the sliding seat 522, one end of the flexible pipe 523 is communicated with the grouting pipe 2, the other end of the flexible pipe is communicated with the grouting end 521, the grouting end 521 is arranged in a T-shaped structure, a telescopic rod 524 is hinged to the larger one of the two ends of the grouting end 521, and the base of the telescopic rod 524 is fixed on the sliding seat 522. By designing the structure of the grouting head 52, when the grouting head 52 performs grouting on the grouting hole 4, firstly, the controller controls the electric telescopic rod 524 to extend, the telescopic rod 524 drives the grouting end 521 to be inserted into the grouting hole 4, the end part of the grouting end 521 of the T-shaped structure can cover the end surface of the grouting hole 4, the excessive grouting splashing condition is weakened, the state of overflowing from the gap between the grouting end 521 and the grouting hole 4 is adjusted, on one hand, the grout waste is reduced, and once the grout overflows from the grouting end 521, the grouting is stopped immediately; on the other hand, the condition that excessive grouting is carried out and the grouting is carried out from the 4 openings of the grouting holes is weakened; the flexible pipe 523 ensures the communication state between the grouting end 521 and the grouting pipe 2 in a telescopic state, and the telescopic distance of the grouting end 521 is prolonged; the grouting end 521 of the telescopic rod 524 in the contracted state has a certain distance from the shield tunnel, so that interference is not easy to occur, and the sliding position of the sliding seat 522 in the arc-shaped track 51 can be conveniently adjusted.
Further, at least two expansion rods 524 are provided, and the expansion rods 524 are uniformly arranged along the circumferential direction of the grouting end head 521. A plurality of telescopic links 524 circumference distributes, has strengthened the supporting effect to slip casting end 521 for the slip casting structural strength increase of this department has guaranteed going on smoothly of slip casting.
Further, an annular sealing ring 525 is embedded into the larger end of the two ends of the grouting end head 521, and the sealing ring is located on the side away from the flexible pipe 523. Annular sealing washer 525 preempts than the slip casting end 521 of T type structure and grouting hole 4 surface contact to take place elastic deformation under the thrust effect of telescopic link 524, the laminating has strengthened grouting hole 4's leakproofness in grouting hole 4's air interface department, further reduces spilling over and the waste of thick liquid.
Example 3:
the transmission mechanism 7 is arranged on the sliding seat 522, the transmission mechanism 7 comprises small transmission teeth 71, the small transmission teeth 71 are rotatably mounted on the side edge of the sliding seat 522, the small transmission teeth 71 are connected with a driving motor 72 fixed on the sliding seat 522, and tooth parts 73 meshed with the small transmission teeth 71 are arranged on the side wall of the arc-shaped track 51.
When the sliding seat is used, the controller controls the corresponding transmission mechanism 7 to work, namely the position of the corresponding sliding seat 522 can be adjusted, and the specific working process is as follows: the controller controls the determined driving motor 72 to start, the driving motor 72 drives the connected small transmission teeth 71 to rotate, and the small transmission teeth 71 are meshed with the tooth parts 73 on the arc-shaped track 51 in a rotating state, so that the small transmission teeth 71 convert the rotating motion on the tooth parts 73 into the position movement of the sliding seat 522, the positions of the connected grouting end 521 and the telescopic rod 524 on the arc-shaped track 51 are adjusted, the accuracy and the freedom degree of the position adjustment of the grouting end 521 are greatly improved, and the grouting reinforcement efficiency of the shield tunnel is further improved; it should be noted that: the sliding seat 522 is limited in the arc-shaped track 51, and can only slide along the arc-shaped track 51, and cannot generate displacement in other directions.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a shield tunnel compaction slip casting equipment, includes underground tunnel (1) and slip casting device, its characterized in that: the grouting device moves in the underground tunnel (1) to perform grouting on the underground tunnel (1); the grouting device comprises grouting pipes (2) and grouting bodies (3), grouting holes (4) are formed in the side wall of the underground tunnel (1), the grouting holes (4) correspond to the grouting pipes (2), the grouting bodies (3) inject grout into the corresponding grouting holes (4) through the grouting pipes (2), and the grouting pipes (2) are installed on the grouting bodies (3) through grouting mechanisms (5).
2. The shield tunnel compaction grouting equipment of claim 1, characterized in that: the grouting mechanism (5) comprises an arc-shaped rail (51), the arc-shaped rail (51) is hollowed, a plurality of grouting heads (52) are installed in a sliding mode, the grouting heads (52) are communicated with the grouting machine body (3) through grouting pipes (2), and the grouting pipes (2) are corrugated pipes;
one side of slip casting organism (3) is rotated and is installed and is rotated post (53), rotate between post (53) and arc track (51) inner wall through support (54) fixed connection, fixedly connected with ring gear (55) on the surface of rotation post (53), the outside meshing transmission of ring gear (55) has gear (56), gear (56) fixed mounting is on the output shaft of driving motor (57), driving motor (57) fixed mounting is on the lateral wall of slip casting organism (3).
3. The shield tunnel compaction grouting equipment of claim 2, characterized in that: the grouting pipes (2) are divided into two groups, the two groups of grouting pipes (2) are symmetrically distributed on two sides of the bracket (54), two groups of grouting heads (52) on the arc-shaped track (51) are arranged, the grouting pipes (2) correspond to the grouting heads (52) one by one,
rotate post (53) middle part and be equipped with concentration pipe (6), it is a plurality of slip casting pipe (2) assemble be connected to concentrate on pipe (6), concentrate and be connected through rotary joint between pipe (6) and slip casting organism (3).
4. The shield tunnel compaction grouting equipment of claim 2 or 3, characterized in that: slip casting head (52) are including slip casting end (521) and sliding seat (522), sliding seat (522) slidable mounting is on arc track (51), just it has flexible pipe (523) to run through on sliding seat (522), flexible pipe (523) one end and slip casting pipe (2) intercommunication, intercommunication between the other end and slip casting end (521), slip casting end (521) set to T type structure, and it has telescopic link (524) to articulate on the great one in slip casting end (521) both ends, the base of telescopic link (524) is fixed on sliding seat (522).
5. The shield tunnel compaction grouting equipment of claim 4, characterized in that: the number of the telescopic rods (524) is at least two, and the telescopic rods (524) are uniformly arranged along the circumferential direction of the grouting end heads (521).
6. The shield tunnel compaction grouting equipment of claim 4 or 5, characterized in that: the big end in slip casting end (521) both ends goes up to imbed has annular sealing washer (525), the sealing washer is located the one side that deviates from flexible tube (523).
7. The shield tunnel compaction grouting equipment of claim 6, characterized in that: be provided with drive mechanism (7) on sliding seat (522), drive mechanism (7) are including little transmission tooth (71), little transmission tooth (71) rotate to be installed on the side of sliding seat (522), little transmission tooth (71) with fix drive motor (72) on sliding seat (522) are connected, be provided with on the lateral wall of arc track (51) with little transmission tooth portion (73) of tooth (71) meshing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210950824.XA CN115434725A (en) | 2022-08-09 | 2022-08-09 | Shield tunnel compaction grouting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210950824.XA CN115434725A (en) | 2022-08-09 | 2022-08-09 | Shield tunnel compaction grouting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115434725A true CN115434725A (en) | 2022-12-06 |
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ID=84242205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210950824.XA Pending CN115434725A (en) | 2022-08-09 | 2022-08-09 | Shield tunnel compaction grouting equipment |
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| Country | Link |
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| CN (1) | CN115434725A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116446911A (en) * | 2023-04-28 | 2023-07-18 | 天津新亚太工程建设监理有限公司 | Tunnel compaction grouting equipment |
| CN116950694A (en) * | 2023-09-18 | 2023-10-27 | 中交隧道工程局有限公司 | Grouting device for shield tunnel |
| CN117108317A (en) * | 2023-10-25 | 2023-11-24 | 焦作煤业集团赵固（新乡）能源有限责任公司 | Grouting equipment is consolidated in mine tunnel |
| CN117489371A (en) * | 2024-01-02 | 2024-02-02 | 中铁五局集团电务工程有限责任公司 | TBM tunnel construction slip casting device |
-
2022
- 2022-08-09 CN CN202210950824.XA patent/CN115434725A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116446911A (en) * | 2023-04-28 | 2023-07-18 | 天津新亚太工程建设监理有限公司 | Tunnel compaction grouting equipment |
| CN116446911B (en) * | 2023-04-28 | 2023-10-31 | 天津新亚太工程建设监理有限公司 | Tunnel compaction grouting equipment |
| CN116950694A (en) * | 2023-09-18 | 2023-10-27 | 中交隧道工程局有限公司 | Grouting device for shield tunnel |
| CN116950694B (en) * | 2023-09-18 | 2023-11-21 | 中交隧道工程局有限公司 | Grouting device for shield tunnel |
| CN117108317A (en) * | 2023-10-25 | 2023-11-24 | 焦作煤业集团赵固（新乡）能源有限责任公司 | Grouting equipment is consolidated in mine tunnel |
| CN117108317B (en) * | 2023-10-25 | 2024-01-30 | 焦作煤业集团赵固（新乡）能源有限责任公司 | Grouting equipment is consolidated in mine tunnel |
| CN117489371A (en) * | 2024-01-02 | 2024-02-02 | 中铁五局集团电务工程有限责任公司 | TBM tunnel construction slip casting device |
| CN117489371B (en) * | 2024-01-02 | 2024-03-19 | 中铁五局集团电务工程有限责任公司 | TBM tunnel construction slip casting device |
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