CN114458352A - Tunnel construction is with supporting protector - Google Patents
Tunnel construction is with supporting protector Download PDFInfo
- Publication number
- CN114458352A CN114458352A CN202111550240.5A CN202111550240A CN114458352A CN 114458352 A CN114458352 A CN 114458352A CN 202111550240 A CN202111550240 A CN 202111550240A CN 114458352 A CN114458352 A CN 114458352A
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- CN
- China
- Prior art keywords
- supporting
- assembly
- support
- tunnel
- tunnel construction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
Abstract
The invention is suitable for the field of supporting and protecting devices, and provides a supporting and protecting device for tunnel construction, which comprises a base and also comprises: the horizontal protection mechanism comprises a baffle plate, and the baffle plate is connected with a propelling mechanism and a supporting protection component; the vertical supporting mechanism comprises a top supporting mechanism and a lifting mechanism, and the top supporting mechanism is used for supporting the top surface of the tunnel with the irregular shape in a contact manner by adjusting the supporting height of the top supporting mechanism and the top surfaces of the tunnels with different heights; the supporting height is adjusted to be in contact with the top surface of the tunnel for supporting; the lifting mechanism is fixedly connected with the top bracing mechanism, the lifting mechanism is used for driving the top bracing mechanism to lift, and the lifting mechanism is in transmission connection with the horizontal protection mechanism; the cooperation through horizontal protection machanism and shore mechanism supports whole tunnel lateral wall and top surface comprehensively, can effectively avoid the tunnel local collapse to appear, increases tunnel construction's security.
Description
Technical Field
The invention belongs to the field of supporting and protecting devices, and particularly relates to a supporting and protecting device for tunnel construction.
Background
A tunnel is a building constructed underground or underwater or in a mountain, with railways or roads for motor vehicles to pass through. The tunnel can be divided into three categories of mountain tunnels, underwater tunnels and urban tunnels according to the positions of the tunnels.
The essential support protector when tunnel construction, current tunnel support protector often adopt the baffle to support the protection to local atress position, and the holding surface is less, and because the wall is uneven in the tunnel, more reduced baffle and wall area of contact to it is not enough to cause the supporting power, for avoiding above-mentioned technical problem, does have the necessity to provide a tunnel construction with supporting protector in order to overcome prior art the defect.
Disclosure of Invention
The embodiment of the invention aims to provide a supporting and protecting device for tunnel construction, and aims to solve the problems that the supporting surface of the existing tunnel supporting and protecting device is small, the contact area of a baffle and a wall surface is small, and the supporting force is insufficient.
The embodiment of the invention is realized in such a way that the supporting and protecting device for tunnel construction comprises a base and further comprises:
the horizontal protection mechanism comprises a baffle, the baffle is connected with a propelling mechanism and a supporting protection assembly, the propelling mechanism is connected with the base, the propelling mechanism is used for propelling the baffle to support the side wall of the tunnel, the supporting protection assembly is connected with the propelling mechanism, and the supporting protection assembly is used for horizontally reinforcing the baffle;
the vertical supporting mechanism comprises a top supporting mechanism and a lifting mechanism, and the top supporting mechanism is used for carrying out contact supporting on the top surfaces of the tunnels with different heights by adjusting the supporting height of the top supporting mechanism when supporting the top surfaces of the tunnels with irregular shapes; the lifting mechanism is fixedly connected with the top bracing mechanism, the lifting mechanism is used for driving the top bracing mechanism to lift, and the lifting mechanism is in transmission connection with the horizontal protection mechanism.
According to a further technical scheme, the lifting mechanism comprises a lifting rod;
the vertical moving assembly is connected with a moving seat, the moving seat is fixedly connected with a top support mechanism, and the vertical moving assembly is used for driving the top support mechanism to lift through the moving seat.
According to a further technical scheme, the lifting mechanism comprises a lifting rod; the propulsion mechanism comprises a motor, the motor is fixedly connected with the base, an output shaft of the motor is fixedly connected with a rotating shaft, a first thread section is arranged on the outer side wall of the rotating shaft, the first thread section is two threads with opposite directions, two threads of the first thread section are respectively in threaded connection with two push plates, the two push plates are all in sliding connection in a sliding groove in the base, and each push plate is respectively connected with a baffle through a fixed rod.
According to the technical scheme, the supporting and protecting assembly comprises a threaded shaft, two threads with the same rotating direction as the first thread section are arranged on the threaded shaft, the two push plates are in threaded connection with the threaded shaft, and a transmission assembly used for enabling the threaded shaft and the rotating shaft to synchronously rotate is connected between the threaded shaft and the rotating shaft in a transmission mode.
According to the technical scheme, the vertical moving assembly scissor assembly is characterized in that two side ends of the scissor assembly are respectively connected with a sliding block used for driving the scissor assembly to movably stretch, wherein the two sliding blocks on one side are connected with the moving seat in a sliding mode, a second thread section is arranged on the outer side wall of the rotating shaft and arranged in the middle of the first thread section, two threads in the second thread section are opposite to the spiral direction of two threads in the adjacent first thread section respectively, the two sliding blocks on the other side are connected with the two threads in the second thread section respectively, and a supporting assembly used for carrying out balance supporting on the moving seat is arranged on one side of the rotating rod.
According to a further technical scheme, the supporting assembly comprises connecting rods, the side end face of each push plate is rotatably connected with one connecting rod, the side end face of each push plate is rotatably connected with one end of one connecting rod, the other end of each connecting rod is rotatably connected with a support, and the supports are slidably connected with the movable seat.
Further technical scheme, the shoring mechanism includes middle part shoring subassembly and side supporting component, the up end fixedly connected with end socket that removes the seat, middle part shoring subassembly and side supporting component are connected with the end socket, middle part shoring subassembly and side supporting component support the middle part and both ends of tunnel top surface respectively.
Further technical scheme, middle part shore subassembly includes first roof, rotates in the end socket and is connected with the gear, the both sides of gear are provided with two racks relatively, the rack all with the gear engagement transmission, two racks all with end socket sliding connection, the equal fixedly connected with first roof of one end of every rack.
Further technical scheme, side supporting component includes the bracing piece, all bracing pieces all with end seat sliding connection, be provided with a plurality of arc guide rail in the end seat, all roll connection has a plurality of ball in the arc guide rail, and the one end of every arc guide rail is all pegged graft and is had a bracing piece, and the equal fixedly connected with second roof of one end of end seat is kept away from to every bracing piece.
According to the further technical scheme, the scissor assembly comprises rotating rods, every two rotating rods are in one group, the two rotating rods of each group are in cross rotating connection, and every two adjacent rotating rods are in rotating connection.
Compared with the prior art, the invention has the following beneficial effects:
according to the supporting and protecting device for tunnel construction, the pushing mechanism pushes the baffle plate to move towards two sides relatively to support the tunnel side walls on the two sides, meanwhile, the pushing mechanism is reinforced through the supporting and protecting assembly, so that the horizontal supporting force of the supporting and protecting device for tunnel construction is increased, meanwhile, the pushing mechanism drives the lifting mechanism to rise, the lifting mechanism drives the jacking mechanism to support the top surface of the tunnel, when the jacking mechanism is in contact with the top surface of the tunnel with the irregular shape, the jacking mechanism is in contact support with the top surfaces of the tunnels with different heights by adjusting the supporting height of the jacking mechanism, so that the contact area between the jacking mechanism and the top surface of the tunnel is increased, and the supporting force is increased; the cooperation through horizontal protection machanism and shore mechanism supports whole tunnel lateral wall and top surface comprehensively, can effectively avoid the tunnel local collapse to appear, increases tunnel construction's security.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of region A in FIG. 1;
FIG. 3 is a schematic view of the connection between the baffle plate and the push plate according to the present invention;
fig. 4 is a schematic view of the connection between the first top plate and the rack in the present invention.
In the drawings: the device comprises a base 1, a baffle 2, a moving seat 3, a motor 4, a rotating shaft 5, a rotating rod 6, a sliding block 7, a push plate 8, a threaded shaft 9, a connecting rod 10, a support 11, a first top plate 12, an end seat 13, a gear 14, a rack 15, a belt transmission pair 16, a supporting rod 17, an arc-shaped track 18, a second top plate 19, a first thread section 20 and a second thread section 21.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1, the supporting and protecting device for tunnel construction provided by the present invention includes a base 1, and further includes:
the horizontal protection mechanism comprises a baffle 2, the baffle 2 is connected with a propelling mechanism and a supporting protection assembly, the propelling mechanism is connected with the base 1, the propelling mechanism is used for propelling the baffle 2 to support the side wall of the tunnel, the supporting protection assembly is connected with the propelling mechanism, and the supporting protection assembly is used for horizontally reinforcing the baffle 2;
the vertical supporting mechanism comprises a top supporting mechanism and a lifting mechanism, and the top supporting mechanism is used for carrying out contact supporting on the top surfaces of the tunnels with different heights by adjusting the supporting height of the top supporting mechanism when supporting the top surfaces of the tunnels with irregular shapes; the lifting mechanism is fixedly connected with the top bracing mechanism, the lifting mechanism is used for driving the top bracing mechanism to lift, and the lifting mechanism is in transmission connection with the horizontal protection mechanism;
the supporting and protecting device for tunnel construction supports the tunnel side walls on two sides by pushing the baffle plates 2 to move relatively towards two sides through the pushing mechanism, and simultaneously reinforces the pushing mechanism through the supporting and protecting assembly, so that the horizontal supporting force of the supporting and protecting device for tunnel construction is increased; the cooperation through horizontal protection machanism and shore mechanism supports whole tunnel lateral wall and top surface comprehensively, can effectively avoid the tunnel local collapse to appear, increases tunnel construction's security.
In the embodiment of the present invention, as shown in fig. 1, as a preferred embodiment of the present invention, the lifting mechanism includes;
the tunnel top surface supporting device comprises a vertical moving assembly, wherein the vertical moving assembly is connected with a moving seat 3, the moving seat 3 is fixedly connected with a supporting mechanism, the vertical moving assembly is used for driving the supporting mechanism to lift through the moving seat 3, and the supporting mechanism is lifted through the vertical moving assembly, so that the supporting of the tunnel top surface is realized.
In the embodiment of the present invention, the propulsion mechanism may be a hydraulic push rod connected between two push plates 8, as shown in fig. 1 and 3, as a preferred embodiment of the present invention, the propulsion mechanism includes a motor 4, the motor 4 is fixedly connected with the base 1, an output shaft of the motor 4 is fixedly connected with a rotating shaft 5, a first thread section 20 is arranged on an outer side wall of the rotating shaft 5, the first thread section 20 is two threads with opposite directions, the two threads of the first thread section 20 are respectively in threaded connection with the two push plates 8, the two push plates 8 are both slidably connected in a sliding groove on the base 1, and each push plate 8 is fixedly connected with a baffle 2 through a fixing rod; the motor 4 drives the rotating shaft 5 fixedly connected with the rotating shaft to rotate, two sections of threads with opposite rotating directions of the first thread section 20 on the rotating shaft 5 are respectively in threaded connection with the two push plates 8, so the rotating shaft 5 drives the two push plates 8 to move oppositely in the sliding groove of the base 1, and the two push plates 8 respectively push the baffle 2 fixedly connected with the rotating shaft to move horizontally to support the side wall of the tunnel.
In the embodiment of the present invention, the transmission assembly may be a chain transmission spoke or a belt transmission pair connected between the threaded shaft 9 and the rotating shaft 5, as a preferred embodiment of the present invention, as shown in fig. 1, the support protection assembly includes a threaded shaft 9, two threads having the same direction as the first thread section 20 are disposed on the threaded shaft 9, both the two push plates 8 are in threaded connection with the threaded shaft 9, and a belt transmission pair 16 for synchronously rotating the threaded shaft 9 and the rotating shaft 5 is in transmission connection between the threaded shaft 9 and the rotating shaft 5; when the rotating shaft 5 rotates, the rotating shaft 5 drives the threaded shaft 9 to rotate through the belt transmission pair 16, and two sections of threads with the same rotating direction as the first threaded section 20 are arranged on the threaded shaft 9, so that the two push plates 8 move relatively on the threaded shaft 9, and the stability of the push plates 8 is improved through the matching of the rotating shaft 5 and the threaded shaft 9, so that the stability of the baffle 2 is improved.
In the embodiment of the present invention, the vertical moving assembly may be a screw-driven lifting mechanism and a hydraulic pushing mechanism, and as a preferred embodiment of the present invention, as shown in fig. 1, the vertical moving assembly comprises a scissor assembly, two side ends of the scissor assembly are respectively connected with a sliding block for driving the scissor assembly to movably extend and retract, two sliding blocks 7 on one side are connected with the movable seat 3 in a sliding mode, a second thread section 21 is arranged on the outer side wall of the rotating shaft 5, the second thread section 21 is arranged in the middle of the first thread section 20, two threads in the second thread section 21 are opposite to the two threads in the adjacent first thread section 20 in spiral direction respectively, two sliding blocks 7 on the other side are connected with the two threads in the second thread section 21 in a threaded mode respectively, and a supporting component used for carrying out balance supporting on the movable seat 3 is arranged on one side of the rotating rod 6; the rotating shaft 5 rotates, the rotating shaft 5 drives the two sliders 7 in threaded connection to move relatively through the second thread section 21, and the two sliders 7 respectively drive the scissor assemblies in rotational connection to move relatively, so that the scissor assemblies push the movable base 3 to lift, the lifting speed of the jacking mechanism is effectively improved, and the supporting efficiency is improved.
In the embodiment of the present invention, as shown in fig. 1, as a preferred embodiment of the present invention, the supporting assembly includes connecting rods 10, a side end surface of each push plate 8 is rotatably connected to one end of one connecting rod 10, the other end of each connecting rod 10 is rotatably connected to a support 11, and each support 11 is slidably connected to the movable seat 3; when the moving seat 3 is lifted up, the support 11 to which one ends of the two links 10 are connected slides relatively in the moving seat 3, so that both sides of the moving seat 3 are supported by the links 10.
In the embodiment of the present invention, the top bracing mechanism may be a plurality of support columns cooperating with springs, as shown in fig. 1, as a preferred embodiment of the present invention, the top bracing mechanism includes a middle top bracing assembly and a side end support assembly, the upper end surface of the moving seat 3 is fixedly connected with an end seat 13, the middle top bracing assembly and the side end support assembly are connected with the end seat 13, and the middle top bracing assembly and the side end support assembly respectively support the middle part and two ends of the top surface of the tunnel.
In the embodiment of the present invention, as shown in fig. 1 to 2, as a preferred embodiment of the present invention, the middle supporting component includes a first top plate 12, a gear 14 is rotatably connected in the end seat 13, two opposite sides of the gear 14 are provided with two racks 15, the racks 15 are both in meshing transmission with the gear 14, the two racks 15 are both in sliding connection with the end seat 13, and one end of each rack 15 is fixedly connected with one first top plate 12; when the first top plate 12 connected with one rack 15 is contacted with the top surface of the tunnel, the lifting mechanism pushes the rack 15 to be meshed with the gear 14 for transmission, so that the gear 14 rotates to drive the other rack 15 to continue moving upwards until the first top plates 12 connected with the two racks 15 are contacted with the top surface of the tunnel, thereby realizing the sufficient contact of the two first top plates 12 with the top surface of the tunnel and improving the supporting force of the middle supporting component.
In the embodiment of the present invention, as shown in fig. 1, as a preferred embodiment of the present invention, the side end support assembly includes support rods 17, all the support rods 17 are slidably connected to the end base 13, a plurality of arc-shaped guide rails 18 are arranged in the end base 13, a plurality of balls are respectively connected to the arc-shaped guide rails 18 in a rolling manner, one end of each arc-shaped guide rail 18 is inserted with one support rod 17, and one end of each support rod 17 away from the end base 13 is fixedly connected with a second top plate 19; when a second top plate 19 is contacted with the tunnel top surface, the supporting rod 17 connected with the second top plate 19 pushes all the balls to slide in the arc-shaped guide rail 18, so that all the balls push another second top plate 19 at the upper end of the supporting rod 17 at the other end of the arc-shaped guide rail 18 to be contacted with the tunnel top surface, and the two second top plates 19 at the two ends of each arc-shaped guide rail 18 support the tunnel top surfaces with different heights.
In the embodiment of the present invention, as shown in fig. 1, as a preferred embodiment of the present invention, the scissor assembly includes two sets of rotating rods 6, each set of rotating rods 6 is in a pair, two rotating rods 6 of each set are in cross rotating connection, each two adjacent sets of rotating rods 6 are in rotating connection, two sliders 7 respectively drive the rotating rods 6 in rotating connection to move relatively, and since each two adjacent sets of rotating rods 6 are in rotating connection, all the rotating rods 6 move relatively, all the rotating rods 6 simultaneously push the moving base 3 to lift, thereby effectively increasing the lifting rate of the top bracing mechanism.
The supporting and protecting device for tunnel construction supports the tunnel side walls on two sides by pushing the baffle plates 2 to move relatively towards two sides through the pushing mechanism, and simultaneously reinforces the pushing mechanism through the supporting and protecting assembly, so that the horizontal supporting force of the supporting and protecting device for tunnel construction is increased; in the top bracing mechanism, when the first top plate 12 connected with one rack 15 is contacted with the top surface of the tunnel, the lifting mechanism pushes the rack 15 to be meshed with the gear 14 for transmission, so that the gear 14 rotates to drive the other rack 15 to continue to move upwards until the first top plates 12 connected with the two racks 15 are contacted with the top surface of the tunnel, thereby realizing the sufficient contact of the two first top plates 12 with the top surface of the tunnel and improving the bracing force of the middle bracing component.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a tunnel construction is with supporting protector, includes the base, its characterized in that still includes:
the horizontal protection mechanism comprises a baffle, the baffle is connected with a propelling mechanism and a supporting protection assembly, the propelling mechanism is connected with the base, the propelling mechanism is used for propelling the baffle to support the side wall of the tunnel, the supporting protection assembly is connected with the propelling mechanism, and the supporting protection assembly is used for horizontally reinforcing the baffle;
the vertical supporting mechanism comprises a top supporting mechanism and a lifting mechanism, and the top supporting mechanism is used for carrying out contact supporting on the top surfaces of the tunnels with different heights by adjusting the supporting height of the top supporting mechanism when supporting the top surfaces of the tunnels with irregular shapes; the lifting mechanism is fixedly connected with the top bracing mechanism, the lifting mechanism is used for driving the top bracing mechanism to lift, and the lifting mechanism is in transmission connection with the horizontal protection mechanism.
2. The support and guard apparatus for tunnel construction according to claim 1, wherein the elevating mechanism includes;
the vertical moving assembly is connected with a moving seat, the moving seat is fixedly connected with a top support mechanism, and the vertical moving assembly is used for driving the top support mechanism to lift through the moving seat.
3. The support and protection device for tunnel construction as claimed in claim 2, wherein the propulsion mechanism includes a motor, an output shaft of the motor is fixedly connected with a rotating shaft, a first thread section is arranged on an outer side wall of the rotating shaft, the first thread section is formed by two opposite threads, two push plates are respectively in threaded connection with the two threads of the first thread section, the two push plates are both in sliding connection with a sliding groove on the base, and each push plate is fixedly connected with a baffle plate through a fixing rod.
4. The supporting and protecting device for tunnel construction according to claim 3, wherein the supporting and protecting component comprises a threaded shaft, two threads with the same direction of rotation as the first thread section are arranged on the threaded shaft, the two push plates are both in threaded connection with the threaded shaft, and a transmission component for enabling the threaded shaft and the rotating shaft to synchronously rotate is in transmission connection between the threaded shaft and the rotating shaft.
5. The support and protection device for tunnel construction according to claim 3, wherein the vertical moving assembly comprises a scissor assembly, two side ends of the scissor assembly are respectively connected with a slider for driving the scissor assembly to movably extend and retract, wherein the two sliders on one side are slidably connected with the moving seat, a second thread section is arranged on the outer side wall of the rotating shaft and is arranged in the middle of the first thread section, two threads in the second thread section are opposite to the two threads in the adjacent first thread section in spiral direction, the two sliders on the other side are respectively in threaded connection with the two threads in the second thread section, and a support assembly for performing balanced support on the moving seat is arranged on one side of the rotating rod.
6. The support and protection device for tunnel construction according to claim 5, wherein the support assembly comprises connecting rods, the side end face of each push plate is rotatably connected with one end of one connecting rod, the other end of each connecting rod is rotatably connected with a support, and the supports are slidably connected with the movable seat.
7. The supporting and protecting device for tunnel construction according to claim 2, wherein the top bracing mechanism comprises a middle top bracing assembly and a side end supporting assembly, an end seat is fixedly connected to the upper end surface of the movable seat, the middle top bracing assembly and the side end supporting assembly are connected with the end seat, and the middle top bracing assembly and the side end supporting assembly respectively support the middle part and two ends of the top surface of the tunnel.
8. The supporting and protecting device for tunnel construction according to claim 7, wherein the middle supporting component comprises a first top plate, a gear is rotatably connected in the end seat, two racks are oppositely arranged on two sides of the gear, the racks are engaged with the gear and are in transmission, the two racks are slidably connected with the end seat, and one end of each rack is fixedly connected with a first top plate.
9. The supporting and protecting device for tunnel construction as claimed in claim 8, wherein the side end supporting assembly comprises supporting rods, all the supporting rods are slidably connected with the end seat, a plurality of arc-shaped guide rails are arranged in the end seat, a plurality of balls are connected in the arc-shaped guide rails in a rolling manner, one end of each arc-shaped guide rail is inserted with one supporting rod, and one end of each supporting rod, which is far away from the end seat, is fixedly connected with the second top plate.
10. The support and protection device for tunnel construction according to claim 5, wherein the shear fork assembly comprises two sets of rotating rods, the two rotating rods of each set are in cross rotating connection, and two adjacent sets of rotating rods are in rotating connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111550240.5A CN114458352A (en) | 2021-12-17 | 2021-12-17 | Tunnel construction is with supporting protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111550240.5A CN114458352A (en) | 2021-12-17 | 2021-12-17 | Tunnel construction is with supporting protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114458352A true CN114458352A (en) | 2022-05-10 |
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ID=81405435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111550240.5A Pending CN114458352A (en) | 2021-12-17 | 2021-12-17 | Tunnel construction is with supporting protector |
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| CN (1) | CN114458352A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575965A (en) * | 2023-07-14 | 2023-08-11 | 山西联盛科技有限公司 | Collapse-preventing tunnel refuge protection equipment and protection method thereof |
-
2021
- 2021-12-17 CN CN202111550240.5A patent/CN114458352A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575965A (en) * | 2023-07-14 | 2023-08-11 | 山西联盛科技有限公司 | Collapse-preventing tunnel refuge protection equipment and protection method thereof |
| CN116575965B (en) * | 2023-07-14 | 2023-09-19 | 山西联盛科技有限公司 | Collapse-preventing tunnel refuge protection equipment and protection method thereof |
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