CN216974860U - Inverted tunnel lining trolley - Google Patents
Inverted tunnel lining trolley Download PDFInfo
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- CN216974860U CN216974860U CN202122867724.4U CN202122867724U CN216974860U CN 216974860 U CN216974860 U CN 216974860U CN 202122867724 U CN202122867724 U CN 202122867724U CN 216974860 U CN216974860 U CN 216974860U
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Abstract
The utility model discloses an inverted tunnel lining trolley, which comprises a framework system; the framework system comprises a plurality of transverse main beams and a plurality of longitudinal main beams, the transverse main beams and the longitudinal main beams form a rectangular framework, longitudinal sliding rail beams are arranged on the transverse main beams and fixed on the transverse main beams, and movable trolleys are arranged on the longitudinal sliding rail beams; third hydraulic oil cylinders are symmetrically arranged at the bottom of the movable trolley, and the movable ends of the symmetrically arranged third hydraulic oil cylinders are respectively connected with the first hydraulic support rod and the second hydraulic support rod; the template system comprises a lining template, a transverse back edge, a longitudinal back edge, a feed opening and a bottom opening surface collecting sample frame; the surface of the lining template is consistent with the shape of the lining finish surface, the lining template is contacted with the lining finish surface of the tunnel, and the back surface of the lining template is provided with a transverse back edge and a longitudinal back edge; the first hydraulic supporting rod and the second hydraulic supporting rod are respectively connected with the connecting parts of the transverse back edge and the longitudinal back edge; and a blanking port is formed in the lining template.
Description
Technical Field
The utility model belongs to the field of tunnel lining construction equipment, and particularly belongs to an inverted tunnel lining trolley.
Background
After the three stages of technology lag, initial development and rapid development, the tunnel in China has moved to the fourth stage leading the construction of the tunnel in the world along with the successful construction of a series of tunnels with large sections, full sections, long distance, high burial depth, river crossing, seabed, karst, weak crushing, high water pressure and other complex strata.
Tunnel supports are generally classified into two types, primary supports and secondary linings. Generally speaking, class i surrounding rocks do not require primary support, and other surrounding rocks do. And the secondary lining is determined according to the geological condition of the area where the tunnel is located, the design purpose of the tunnel and the like.
For non-prefabricated tunnel secondary lining, the construction method is generally divided into full-section disposable lining and side top arch and inverted arch separated lining. The construction of full section lining adopts needle beam formula platform truck to divide into three relatively independent regions with platform truck anterior segment, platform truck section, back end, and heavy equipment such as vehicle can't pass through the platform truck and walk. The construction method of the side top arch and the inverted arch separated lining can select a construction method of an inverted arch trestle and a shaping template with the passing of a truck or other construction methods without passing of the truck and equipment according to project requirements, and common inverted arch construction methods comprise manual surface folding, shaping templates, slip forms and the like.
The method for controlling the finished surface commonly adopted by tunnel inverted arch lining construction comprises the methods of manual surface folding, shaping templates, slip forms, inverted arch trestles + shaping templates, needle beam type trolleys and the like. The different construction methods are characterized as follows:
the manual surface collection is suitable for small-scale lining or post-lining repair, the construction speed is low, the lining finish surface is difficult to uniformly control, the effect is poor, and the cost is lowest for a small and miniature tunnel.
The shaping template is suitable for construction projects with small height difference of an inverted arch finished surface, small concrete side pressure and small engineering quantity. After the lining of the shaped template is finished, the repair work of a larger degree is often needed, and the inverted arch construction under the conditions of large area, long distance and complex surrounding environment is not facilitated.
The slip form construction method is widely applied to tunnel inverted arch lining construction at present, but for large or ultra-large tunnel inverted arch lining construction, the scale of traction equipment of the slip form is large due to large friction force between inverted arch concrete and the slip form. Especially when the face elevation difference of tunnel invert completion surpasses certain degree, the tunnel invert face effect after the shaping is difficult to guarantee, and later stage repair work volume is also great.
Inverted arch trestle + design template still need to keep the tunnel current ability project in being applicable to the inverted arch work progress, and its result of use is better, but inverted arch trestle's length often pours the position in storehouse (several times of inverted arch template length, equipment cost that the inverted arch was pour will be multiplication and add).
Compared with the existing inverted arch lining construction method, the full-section needle beam trolley has the strongest applicability and good effect on the large-section or extra-large-section tunnel. However, due to the core needle beam structure, the structure is complex, the size and the weight are large, and the manufacturing cost of the needle beam structure is usually several times higher than that of the equipment adopted by the construction method of separately pouring the inverted arch and the side top arch. Meanwhile, the full-section needle beam trolley is complex in structure, and the production, transportation, installation, use, disassembly and other difficulties are large.
The tunnel inverted arch lining construction adopts different construction methods and selects different construction equipment according to the section size and the rock characteristics of the tunnel inverted arch lining construction and by combining various different conditions such as project construction period, technical capability of construction enterprises or personnel and the like. However, for a large-section or extra-large-section tunnel, the selection of the construction method for inverted arch construction is often limited by the existing construction equipment, installation sites, transportation channels and the like, so that the construction cost is high or the construction effect is poor.
In summary, the construction method in the prior art has the problems of high construction cost, large manpower consumption and poor construction effect.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides an inverted-suspension tunnel lining trolley, which is used for solving the problems of high labor consumption, high cost and low construction speed in construction in the prior art. The tunnel inverted arch rapid lining construction equipment has the advantages of low price, simplicity in mounting and dismounting, rapidness and high efficiency in construction and good lining finish surface effect.
In order to achieve the purpose, the utility model provides the following technical scheme:
an inverted tunnel lining trolley comprises a framework system, a template system and a support system;
the two ends of the framework system are provided with supporting systems for supporting, and the template system is arranged below the framework system;
the framework system comprises a plurality of transverse main beams and a plurality of longitudinal main beams, the transverse main beams and the longitudinal main beams form a rectangular framework, longitudinal sliding rail beams are arranged on the transverse main beams and fixed on the transverse main beams, and movable trolleys are arranged on the longitudinal sliding rail beams;
third hydraulic oil cylinders are symmetrically arranged at the bottom of the movable trolley, and movable ends of the symmetrically arranged third hydraulic oil cylinders are respectively connected with the first hydraulic support rod and the second hydraulic support rod;
the template system comprises a lining template, a transverse back edge, a longitudinal back edge, a feed opening and a bottom opening surface collecting sample frame; the surface of the lining template is consistent with the shape of a lining finish surface, the lining template is contacted with the tunnel lining finish surface, and the back surface of the lining template is provided with a transverse back edge and a longitudinal back edge; the first hydraulic stay bar and the second hydraulic stay bar are respectively connected with the connecting parts of the transverse back edge and the longitudinal back edge; and a blanking port is formed in the lining template.
Preferably, the supporting system comprises an upper supporting shoe, a lower supporting shoe, a first hydraulic oil cylinder and a second hydraulic oil cylinder; the upper side and the lower side of the rectangular framework are respectively fixed with a first hydraulic oil cylinder and a second hydraulic oil cylinder, the movable end of the first hydraulic oil cylinder is connected with the upper supporting shoe, and the movable end of the second hydraulic oil cylinder is connected with the lower supporting shoe.
Further, the end part of the lower supporting shoe is provided with an anti-sliding plate.
Preferably, a lower supporting shoe is arranged at the bottom of the front end of the framework system, and a guide wheel is arranged at the end part of the lower supporting shoe.
Preferably, a lateral auxiliary plate is arranged between the transverse main beam and the longitudinal main beam.
Preferably, the end part of the framework system is provided with a pull ring for connecting a traction device with the pull ring to move the trolley.
Preferably, a fourth hydraulic oil cylinder is arranged on the longitudinal slide rail beam, the movable end of the fourth hydraulic oil cylinder is connected with the movable trolley, and the fourth hydraulic oil cylinder is used for adjusting the position of the movable trolley.
Preferably, a hydraulic pump station is arranged at the upper end of the framework system and used for adjusting the working state of the hydraulic oil cylinder.
Preferably, the walking machine also comprises a pedestrian passageway vertical support, a pedestrian passageway horizontal support, a crawling ladder vertical rod and a crawling ladder transverse rod;
the pedestrian passageway vertical support and the ladder stand vertical rod are fixed at the bottom of the framework system, and the ladder stand vertical rod and the ladder stand cross rods are fixed to form a ladder stand; the bottom of the ladder stand vertical rod is fixedly connected with a pedestrian passageway horizontal support.
Preferably, a top passageway is arranged at the top of the framework system, and an access opening is formed in the top passageway.
Compared with the prior art, the utility model has the following beneficial technical effects:
the utility model provides an inverted-suspension tunnel lining trolley, which relatively separates a trolley framework system from a template system. When the trolley moves, the template system is fixed, and the trolley framework system moves to a specified position through mechanical traction. When the trolley works, the framework system is fixed, and the template system is moved to a designed working position by adjusting the movable trolley, the hydraulic oil cylinder and the like. The device solves the problems of tunnel inverted arch lining construction channel and construction space, and greatly reduces the difficult problems of design, transportation and installation of large tunnel inverted arch construction equipment. The method has the characteristics of good construction effect, high construction speed, simple manufacture, convenient installation and easy operation. A large amount of labor cost is saved, and the difficulty and the cost of manufacturing and installing the equipment are greatly reduced. Provides a new construction device and a construction method for tunnel inverted arch lining construction. The practicability is strong, and the economic benefit is obvious.
Drawings
FIG. 1 is a schematic front view of an inverted tunnel lining trolley of the present invention;
FIG. 2 is a schematic top view of an inverted tunnel lining trolley of the present invention;
FIG. 3 is a schematic cross-sectional view of an inverted tunnel lining trolley of the present invention;
FIG. 4 is a schematic view of a framework system in an inverted tunnel lining trolley according to the present invention;
FIG. 5 is a schematic cross-sectional view of a framework system in an inverted tunnel lining trolley according to the present invention;
FIG. 6 is a schematic top view of a panel system in an inverted tunnel lining trolley according to the present invention;
FIG. 7 is a schematic cross-sectional view of a panel system in an inverted tunnel lining trolley according to the present invention;
FIG. 8 is a schematic view of the front end support of the support system in an inverted tunnel lining trolley of the present invention also functioning as a guide wheel;
FIG. 9 is a schematic structural view of a support system in an inverted tunnel lining trolley according to the present invention;
FIG. 10 is a schematic view of a guide wheel in an inverted tunnel lining trolley according to the present invention;
FIG. 11 is a schematic view of the lower support member of the guide wheels in the support system of an inverted tunnel lining trolley of the present invention;
FIG. 12 is a schematic plan view of a hydraulic leveling system in an inverted tunnel lining trolley according to the present invention;
FIG. 13 is a schematic view of a hydraulic leveling system in an inverted tunnel lining trolley according to the present invention;
FIG. 14 is a schematic view of the top bus arrangement in an inverted tunnel lining trolley of the present invention;
FIG. 15 is a schematic elevation view of a tunnel lining truck of the present invention;
FIG. 16 is a schematic plan view of a portion of a tunnel lining truck of the inverted tunnel of the present invention;
in the drawings: 1-1 is a transverse main beam; 1-2 is a longitudinal main beam; 1-3 are longitudinal sliding rail beams; 1-4 is a pull ring; 1-5 is a lateral auxiliary plate; 2-1 is a lining template; 2-2 is a transverse back edge; 2-3 is a longitudinal back edge; 2-4 is a feed opening; 2-5 is a bottom opening dough collecting sample rack; 3-1 is an upper supporting shoe; 3-2 is a lower supporting shoe; 3-3 is a first hydraulic oil cylinder; 3-4 is a second hydraulic oil cylinder; 3-5 is anti-sliding plate; 3-6 are guide wheels; 4-1 is a movable trolley; 4-2 is a first hydraulic stay bar; 4-3 is a second hydraulic stay bar; 4-4 is a third hydraulic oil cylinder; 5-1 is an access hole; 5-2 is a top passage; 5-3 is a hydraulic pump station; 5-4 is a hydraulic oil cylinder platform; 5-5 is a fourth hydraulic oil cylinder; 6-1 is a vertical support of the pedestrian passageway; 6-2 is a horizontal support of the pedestrian passageway; 6-3 is a vertical ladder stand; 6-4 is a ladder stand cross bar; 6-5 are channel springboards.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the utility model.
As shown in fig. 1 to 16, the present invention provides an inverted tunnel lining trolley, which comprises a framework system, a formwork system and a support system.
The two ends of the framework system are provided with supporting systems for supporting, and the template system is arranged below the framework system.
The framework system comprises a plurality of transverse main beams 1-1 and a plurality of longitudinal main beams 1-2, the plurality of transverse main beams 1-1 and the plurality of longitudinal main beams 1-2 form a rectangular framework, longitudinal sliding rail beams 1-3 are arranged on the transverse main beams 1-1, the longitudinal sliding rail beams 1-3 are fixed on the transverse main beams 1-1, and movable trolleys 4-1 are arranged on the longitudinal sliding rail beams 1-3; the bottom of the movable trolley 4-1 is symmetrically provided with third hydraulic oil cylinders 4-4, and the movable ends of the symmetrically arranged third hydraulic oil cylinders 4-4 are respectively connected with a first hydraulic stay bar 4-2 and a second hydraulic stay bar 4-3.
The template system comprises a lining template 2-1, a transverse back edge 2-2, a longitudinal back edge 2-3, a feed opening 2-4 and a bottom opening surface collecting sample frame 2-5; the surface of the lining template 2-1 is consistent with the shape of a lining finish surface, the lining template 2-1 is in contact with the lining finish surface of the tunnel, and the back surface of the lining template 2-1 is provided with a transverse back ridge 2-2 and a longitudinal back ridge 2-3; the first hydraulic support rod 4-2 and the second hydraulic support rod 4-3 are respectively connected with the connecting parts of the transverse back edge 2-2 and the longitudinal back edge 2-3; the lining template 2-1 is provided with a feed opening 2-4.
The supporting system comprises an upper supporting shoe 3-1, a lower supporting shoe 3-2, a first hydraulic oil cylinder 3-3 and a second hydraulic oil cylinder 3-4; the upper side and the lower side of the rectangular framework are respectively fixed with a first hydraulic oil cylinder 3-3 and a second hydraulic oil cylinder 3-4, the movable end of the first hydraulic oil cylinder 3-3 is connected with an upper supporting shoe 3-1, and the movable end of the second hydraulic oil cylinder 3-4 is connected with a lower supporting shoe 3-2. The end part of the lower supporting shoe 3-2 is provided with an anti-sliding plate 3-5.
The bottom of the front end of the framework system is provided with a lower supporting shoe 3-2, and the end part of the lower supporting shoe 3-2 is provided with a guide wheel 3-6. A lateral auxiliary plate 1-5 is arranged between the transverse main beam 1-1 and the longitudinal main beam 1-2. And the end part of the framework system is provided with a pull ring 1-4 which is used for connecting a traction device with the pull ring 1-4 to move the trolley. A fourth hydraulic oil cylinder 5-5 is arranged on the longitudinal slide rail beam 1-3, the movable end of the fourth hydraulic oil cylinder 5-5 is connected with the movable trolley 4-1, and the fourth hydraulic oil cylinder 5-5 is used for adjusting the position of the movable trolley 4-1. And the upper end of the framework system is provided with a hydraulic pump station 5-3, and the hydraulic pump station 5-3 is used for adjusting the working state of the hydraulic oil cylinder. The ladder is characterized by also comprising a pedestrian passageway vertical support 6-1, a pedestrian passageway horizontal support 6-2, a ladder vertical rod 6-3 and a ladder transverse rod 6-4; the pedestrian passageway vertical support 6-1 and the ladder stand vertical rod 6-3 are fixed at the bottom of the framework system, and the ladder stand vertical rod 6-3 and the ladder stand cross rods 6-4 are fixed to form a ladder stand; the bottom of the vertical ladder stand 6-3 is fixedly connected with a pedestrian passageway horizontal support 6-2, and a passageway springboard 6-5 is arranged at the top of the framework system. The top of the framework system is provided with a top passageway 5-2, and the top passageway 5-2 is provided with an access hole 5-1. The hydraulic oil cylinder platform 5-4 is used for placing a fourth hydraulic oil cylinder 5-5.
After the trolley is fixed to a set position, the position of the movable trolley 4-1 is adjusted by adjusting a fourth hydraulic oil cylinder 5-5 fixed on the longitudinal sliding rail beam 1-3, so that the template system connected to the movable trolley 4-1 is adjusted to a designed position.
After the template system is adjusted to the position, the third hydraulic oil cylinder 4-4 of the hydraulic leveling system is adjusted to realize fine adjustment of the template system, and the template system is accurately adjusted to the design position.
When the trolley moves, the template system is placed on the finished concrete surface by adjusting the third hydraulic oil cylinder 4-4, the first hydraulic oil cylinder 3-3 is retracted, the second hydraulic oil cylinder 3-4 is retracted, at the moment, the template system supports the upper structure of the trolley through the movable trolley 4-1, and then the trolley is stepped through the mechanical traction pull ring 1-4.
After the trolley is in place in a stepping mode, the second hydraulic cylinder 3-4 is adjusted to enable the lower supporting shoe 3-2 to be supported on the rock wall, the anti-sliding plate 3-5 increases the friction force between the trolley and the rock wall, and the stability of the trolley is improved.
The first hydraulic cylinder 3-3 is adjusted so that the upper shoe 3-1 is also supported on the rock wall. Then, the first hydraulic cylinder 3-3 and the second hydraulic cylinder 3-4 are adjusted simultaneously, the trolley framework system is adjusted to a designed position and is firmly fixed.
After the trolley is fixed, the third hydraulic oil cylinder 4-4 is adjusted to lift the whole template system off the ground, so that the trolley completes a complete walking and working process.
Under the condition that the ground cannot provide enough space, in order to ensure the normal use of the trolley, the trolley is fixed at the upper position of the tunnel through the lower supporting shoes 3-2; in order to prevent the trolley and the tunnel rock wall from sliding relatively, an anti-sliding plate 3-5 is additionally arranged at the tail end of the lower supporting shoe 3-2; in order to prevent the trolley from overturning or being unstable in the using and transferring processes, the relative position of the trolley is fixed through the upper supporting shoe 3-1, and the trolley is firmly fixed through adjusting the first hydraulic cylinder 3-3 and the second hydraulic cylinder 3-4.
In order to ensure that the templates can be accurately adjusted to the designed position, a horizontal adjusting system for adjusting the fourth hydraulic oil cylinders 5-5 and a vertical adjusting system for adjusting the third hydraulic oil cylinders 4-4 are arranged, and meanwhile, the templates of each unit are vertically provided with 4 hydraulic oil cylinders for adjustment, so that the templates can be accurately adjusted to the designed position.
In order to solve the problem of trolley stepping, a trolley framework system and a template system are relatively independent. When the trolley moves, the template system is fixed, and the trolley framework system moves to the designated position through mechanical traction. When the trolley works, the framework system is fixed, and the template system is moved to a designed working position by adjusting the movable trolley, the hydraulic oil cylinder and the like.
The trolley framework system is divided into a main stressed component at the rear part and a guide frame part at the front end, when the trolley moves, the guide frame and guide wheels 3-6 drive the trolley framework system to integrally move under the action of a traction machine, and the trolley is adjusted by adjusting a hydraulic oil cylinder after moving in place and being fixed.
The device has solved the problem in tunnel invert lining construction passageway and construction space, the reduction of great degree the difficult problem of large-scale tunnel invert construction equipment design, transportation, installation. The method has the characteristics of good construction effect, high construction speed, simple manufacture, convenient installation and easy operation. A large amount of labor cost is saved, and the difficulty and the cost of manufacturing and installing the equipment are greatly reduced. Provides a new construction device and a construction method for tunnel inverted arch lining construction. The practicability is strong, and the economic benefit is obvious.
Claims (10)
1. An inverted tunnel lining trolley is characterized by comprising a framework system, a template system and a supporting system;
the two ends of the framework system are provided with supporting systems for supporting, and the template system is arranged below the framework system;
the framework system comprises a plurality of transverse main beams (1-1) and a plurality of longitudinal main beams (1-2), the transverse main beams (1-1) and the longitudinal main beams (1-2) form a rectangular framework, longitudinal sliding rail beams (1-3) are arranged on the transverse main beams (1-1), the longitudinal sliding rail beams (1-3) are fixed on the transverse main beams (1-1), and movable trolleys (4-1) are arranged on the longitudinal sliding rail beams (1-3);
third hydraulic oil cylinders (4-4) are symmetrically arranged at the bottoms of the movable trolleys (4-1), and the movable ends of the symmetrically arranged third hydraulic oil cylinders (4-4) are respectively connected with first hydraulic support rods (4-2) and second hydraulic support rods (4-3);
the template system comprises a lining template (2-1), a transverse back edge (2-2), a longitudinal back edge (2-3), a feed opening (2-4) and a bottom opening surface collection sample frame (2-5); the surface of the lining template (2-1) is consistent with the shape of a lining finished surface, the lining template (2-1) is in contact with the lining finished surface of the tunnel, and the back surface of the lining template (2-1) is provided with a transverse back edge (2-2) and a longitudinal back edge (2-3); the first hydraulic stay bar (4-2) and the second hydraulic stay bar (4-3) are respectively connected with the connecting parts of the transverse back edge (2-2) and the longitudinal back edge (2-3); the lining template (2-1) is provided with a feed opening (2-4).
2. An inverted tunnel lining trolley according to claim 1, wherein the support system comprises an upper shoe (3-1), a lower shoe (3-2), a first hydraulic cylinder (3-3) and a second hydraulic cylinder (3-4); the upper side and the lower side of the rectangular framework are respectively fixed with a first hydraulic oil cylinder (3-3) and a second hydraulic oil cylinder (3-4), the movable end of the first hydraulic oil cylinder (3-3) is connected with an upper supporting shoe (3-1), and the movable end of the second hydraulic oil cylinder (3-4) is connected with a lower supporting shoe (3-2).
3. An inverted tunnel lining trolley according to claim 2, characterized in that the ends of the lower shoes (3-2) are provided with skid resistant plates (3-5).
4. An inverted tunnel lining trolley according to claim 1, characterized in that the lower shoe (3-2) is arranged at the bottom of the front end of the skeleton system, and the guide wheels (3-6) are arranged at the end of the lower shoe (3-2).
5. An inverted tunnel lining trolley according to claim 1, characterized in that lateral auxiliary plates (1-5) are provided between the transverse main beams (1-1) and the longitudinal main beams (1-2).
6. An inverted tunnel lining trolley according to claim 1, characterized in that the ends of the skeleton system are provided with pull rings (1-4) for pulling equipment to connect the pull rings (1-4) to move the trolley.
7. The inverted tunnel lining trolley according to claim 1, wherein a fourth hydraulic oil cylinder (5-5) is arranged on the longitudinal sliding rail beam (1-3), the movable end of the fourth hydraulic oil cylinder (5-5) is connected with the movable trolley (4-1), and the fourth hydraulic oil cylinder (5-5) is used for adjusting the position of the movable trolley (4-1).
8. The inverted tunnel lining trolley according to claim 1, wherein a hydraulic pump station (5-3) is arranged at the upper end of the framework system, and the hydraulic pump station (5-3) is used for adjusting the working state of a hydraulic oil cylinder.
9. The inverted tunnel lining trolley according to claim 1, further comprising a pedestrian passageway vertical support (6-1), a pedestrian passageway horizontal support (6-2), a ladder climbing vertical rod (6-3) and a ladder climbing cross rod (6-4);
the pedestrian passageway vertical support (6-1) and the ladder stand vertical rod (6-3) are fixed at the bottom of the framework system, and the ladder stand vertical rod (6-3) and the ladder stand cross rods (6-4) are fixed to form a ladder stand; the bottom of the vertical ladder (6-3) is fixedly connected with a pedestrian passageway horizontal support (6-2).
10. An inverted tunnel lining trolley according to claim 1, characterized in that the top of the skeleton system is provided with a top aisle (5-2), and the top aisle (5-2) is provided with an access opening (5-1).
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| CN202122867724.4U CN216974860U (en) | 2021-11-22 | 2021-11-22 | Inverted tunnel lining trolley |
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| CN202122867724.4U CN216974860U (en) | 2021-11-22 | 2021-11-22 | Inverted tunnel lining trolley |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931663A (en) * | 2021-11-22 | 2022-01-14 | 中国葛洲坝集团第三工程有限公司 | Tunnel inverted arch lining construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931663A (en) * | 2021-11-22 | 2022-01-14 | 中国葛洲坝集团第三工程有限公司 | Tunnel inverted arch lining construction method |
| CN113931663B (en) * | 2021-11-22 | 2024-07-02 | 中国葛洲坝集团第三工程有限公司 | Tunnel inverted arch lining construction method |
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