CN116291493A - Device and method for assisting installation of tunnel steel arch and monitoring and measuring reflective paste - Google Patents
Device and method for assisting installation of tunnel steel arch and monitoring and measuring reflective paste Download PDFInfo
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- CN116291493A CN116291493A CN202310515248.0A CN202310515248A CN116291493A CN 116291493 A CN116291493 A CN 116291493A CN 202310515248 A CN202310515248 A CN 202310515248A CN 116291493 A CN116291493 A CN 116291493A
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- steel
- steel arch
- lifting platform
- monitoring
- tunnel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 119
- 239000010959 steel Substances 0.000 title claims abstract description 119
- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 238000009434 installation Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000009412 basement excavation Methods 0.000 claims description 29
- 210000000078 claw Anatomy 0.000 claims description 11
- 230000002787 reinforcement Effects 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 15
- 238000005259 measurement Methods 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
- E21D9/004—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines using light beams for direction or position control
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- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The device comprises a traveling system, a lifting platform and a hydraulic fine-tuning system; the travelling system is used for positioning the longitudinal and transverse positions of the steel arch; the lifting platform is arranged at the upper part of the traveling system and is used for vertically positioning the steel arch, monitoring and measuring the drilling installation and surface cleaning of the reflective paste; the hydraulic fine tuning system is arranged at the upper part of the lifting system and is used for fixing and adjusting the steel arch. The invention has reasonable structure, convenient construction and easy operation, and greatly reduces the operation risk in the construction process of workers.
Description
Technical Field
The invention belongs to the technical field of tunnel construction methods, and particularly relates to a device and a method for assisting in installing a tunnel steel arch and a monitoring and measuring reflective patch.
Background
The steel arch stand is required to work immediately after a tunnel is excavated, the current common stand method is to push an excavation trolley through a loader, and then connect bolts through manual lifting and positioning, but the light in the tunnel is darker and has dead angles; a certain gap exists between the reinforcement mesh books on the roof of the excavation platform, and the reinforcement mesh is not flat after long-time extrusion of a machine for drilling blast holes; the trolley has more sundries, construction machinery and lines; the trolley roof is constructed to have a certain height and has fewer protective measures; these reasons make construction at great risk. Moreover, because the manual lifting, positioning and installing needs more workers and the construction efficiency is not high, the installation of the reinforcing steel bar net sheets in the steel arch cannot be performed in parallel sometimes. The tunnel clearance section after excavation sometimes can not be controlled well, and the vault frequently surpasses the excavation for the control is measured the reflection of light subsides of vault and can not effectual installation, and concrete frequently shelter from vault reflection of light subsides after the initial stage support, and these actual scene can not very convenient processing, influences the progress of control measurement.
Disclosure of Invention
The invention provides a device and a method for assisting in installing a tunnel steel arch and a monitoring and measuring reflective patch, which aims to overcome the defects of the prior art. The device is rational in infrastructure, and construction convenience easily operates, has greatly reduced the operational risk in the workman work progress.
The device for assisting the installation of the tunnel steel arch and the monitoring measurement reflective paste comprises a traveling system, a lifting platform and a hydraulic fine adjustment system; the travelling system is used for positioning the longitudinal and transverse positions of the steel arch; the lifting platform is arranged at the upper part of the traveling system and is used for vertically positioning the steel arch, monitoring and measuring the drilling installation and surface cleaning of the reflective paste; the hydraulic fine tuning system is arranged at the upper part of the lifting system and is used for fixing and adjusting the steel arch.
The method for installing the auxiliary tunnel steel arch and the monitoring and measuring reflective paste comprises the following steps:
s1, pushing a traveling system to the tail end of the direction of a tunnel portal of an excavation trolley, and positioning;
s2, lifting the loader to convey the steel arch to the manipulator;
s3, rotating the manipulator to be parallel to a bucket of the loader through rotation of an upper plate of the lifting platform, dropping the steel arch by the loader, and clamping a lower flange plate of the steel arch through the manipulator;
s4, controlling the steel arch to be parallel to the travelling direction of the tunnel through rotation of the lifting platform, and fixing an upper plate and a lower plate of the lifting platform by bolts;
s5, pushing the traveling system to the position below the vertical arch, positioning the longitudinal traveling system, controlling the lifting platform to transversely move, coarsely positioning the steel arch by utilizing the hydraulic fine-tuning system, and fixing the transverse traveling system after positioning;
s6, controlling a hydraulic fine adjustment system, loosening a manipulator, manually fine-adjusting and positioning two adjacent steel arches, and then screwing bolts;
s7, drilling and implanting the reflective paste reinforcing steel bar through the lifting platform which is lifted while screwing the bolts in the step, and pasting the reflective paste;
and S8, after the support spraying is finished, controlling the traveling system to longitudinally move to clear the invisible reflective patch, and repairing the damaged or dropped reflective patch.
Compared with the prior art, the invention has the beneficial effects that:
the invention has reasonable structure, convenient and accurate construction, high working efficiency, great labor cost saving, easy operation and great reduction of operation risk in the construction process of workers. The defects that the existing auxiliary tunnel steel arch and monitoring measurement reflective patch mounting mode has low construction efficiency, inconvenient site construction and high construction risk, and the reflective patch mounting is influenced by overexcavation and the monitoring measurement data is influenced by shielding of concrete after primary support are overcome.
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples:
drawings
FIG. 1 is a schematic view of an auxiliary tunnel steel arch and monitoring measurement reflective patch mounting apparatus of the present invention;
FIG. 2 is a schematic diagram of a traveling system and excavation trolley arrangement;
FIG. 3 is an elevational schematic view of an excavation trolley;
FIG. 4 is a schematic view of a rotatable arrangement between upper and lower plates of a lift platform
FIG. 5 is a schematic view of a loader pushing steel arch;
FIG. 6 is a schematic view of a steel arch and bolted connection;
FIG. 7 is a schematic view of the arch after the arch is erected;
FIG. 8 is a schematic view of the assembled reflective patch after the arch is erected;
in the figure: 1. the device comprises an excavating trolley, 2, steel rails, 3, track tires, 4, rubber tires, 5, a lifting platform, 6, a hydraulic jack, 7, mechanical claws, 8, a loader, 9, a steel arch, 10, a reflective patch, 11, bolts, A and a traveling system.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
1-3, a device for assisting in installing a tunnel steel arch and monitoring and measuring reflective paste in the embodiment comprises a traveling system A, a lifting platform 5 and a hydraulic fine adjustment system 6;
the travelling system A is used for positioning the longitudinal and transverse positions of the steel arch 9;
the lifting platform 5 is arranged at the upper part of the traveling system A, and the lifting platform 5 is used for vertically positioning the steel arch 9 and monitoring and measuring the drilling installation and surface cleaning of the reflective sticker 10;
the hydraulic fine tuning system 6 is arranged in the upper part of the lifting system a, and the hydraulic fine tuning system 6 is used for fixing and adjusting the steel arch 9.
The hydraulic fine tuning system 6 is used for fixing the steel arches 9 and performing fine adjustment, so that the adjacent steel arches 9 are conveniently connected through bolts 11.
The lifting platform 5 is used for vertically positioning the steel arch 9 and monitoring and measuring the surface cleaning after the drilling installation and the primary support of the reflective paste 10.
The method solves the problems that the existing installation mode of the auxiliary tunnel steel arch and the monitoring and measuring reflective paste has low construction efficiency, inconvenient site construction and high construction risk, and the defect that the mounting of the reflective paste is influenced by overexcavation and the defect that the monitoring and measuring data is influenced by the shielding of concrete after primary support is overcome.
Further, as described with reference to fig. 1 and 2, the running system a of the present embodiment includes a longitudinal running system, and the longitudinal running system includes a rail 2, a rail pulley 3, and a rubber tire 4;
the transverse traveling system comprises a steel rail 2 and a steel rail pulley 3;
the steel rail 2 of the longitudinal traveling system is fixed on a beam frame of the roof of the excavation trolley 1, the steel rail pulley 3 of the longitudinal traveling system is fixed on the steel rail 2 of the transverse traveling system and is slidably arranged on the steel rail 2 of the longitudinal traveling system, the rubber tire 4 is in rolling contact with the side rails on the two sides of the roof of the excavation trolley 1, and the steel rail pulley 3 of the transverse traveling system is fixed at the bottom of the lifting platform 5 and is slidably arranged on the steel rail 2 of the transverse traveling system.
The longitudinal running system realizes running along the length direction of the tunnel by means of the steel rail pulley 2 sliding on the steel rail 2 and the rubber tyre 4 on the excavation trolley 1, realizes the longitudinal movement of the lifting platform 5, and realizes the transverse movement of the lifting platform 5 by means of the sliding of the steel rail pulley 3 at the bottom of the lifting platform 5 on the steel rail 2 on the transverse running system.
The steel rail 2 of the transverse running system is connected with the steel rail pulley 3 of the longitudinal running system through a shaft, so that the steel rail of the transverse running system can move longitudinally.
Preferably, the position of the steel rail 2 of the longitudinal running system is collinear with the projection of the two longitudinal beams of the roof of the excavation trolley 1, so that the arch is more reasonable in stress and is fixedly connected with the reinforcement mesh paved on the roof of the excavation trolley 1. For example: the steel rail 2 of the longitudinal running system is directly anchored on five cross beams of the roof of the excavation trolley 1, the positions of the steel rail 2 and the projections of two longitudinal beams of the roof of the excavation trolley 1 are collinear, the steel reinforcement net paved on the roof of the excavation trolley 1 is divided into three pieces by two steel rails and is welded with the steel reinforcement net paved on the roof of the excavation trolley 1, the steel rail pulley 3 directly runs on the steel rail 2, and the rubber tires 4 directly run on the longitudinal beams on two sides of the roof of the excavation trolley 1.
Further, the travelling system a is provided with a hand brake and short bars which can be inserted into the gaps of the reinforcement mesh laid on the roof of the excavation trolley 1. So as to control the walking positioning of the longitudinal walking system and the transverse walking system. The travelling system is provided with a hand brake, the short steel bars which are lowered are inserted into gaps of the steel bar meshes laid on the top of the excavation trolley 1, the travelling system is longitudinally and transversely moved to be pushed by workers directly, the hand brake is used for tensioning after the travelling system is stabilized, the steel bars are placed in the perforated positions on the lower plate of the lifting platform 5, the steel bars are enabled to fall into the gaps of the steel bar meshes, and the safety performance is improved.
As shown in fig. 1 and fig. 4, the lifting platform 5 is a scissor-type lifter, the upper layer platform of the scissor-type lifter is of a double-plate structure, and the upper plate and the lower plate of the double-plate structure can rotate relatively. The upper plate and the lower plate of the double-plate structure are respectively provided with arc holes at two lateral sides, bolts and nuts of upper knobs are penetrated in the arc holes, the rotatable angle range of the upper plate relative to the lower plate is 0-60 degrees, and any angle position in the angle range is positioned by the bolts and the nuts of the upper plate and the lower plate. As shown in fig. 1 and 4, since the direction of travel of the tunnel is not completely parallel to the initial excavation trolley 1, and the placement position of the steel arch 9 is uncertain when the loader 8 lifts the excavation trolley 1 on the steel arch 9, the steel arch 9 needs to be docked by the rotation function of the lifting platform 5, and the position needs to be determined by rotating the upper plate of the lifting platform 5 when the steel arch 9 is positioned later.
The two rotating plate hole sites of the upper plate and the lower plate of the double-plate structure of the lifting platform 5 are provided with bolts 11 and backing plates, four groups of the bolts are arranged in total, and the upper plate and the lower plate are arc-shaped holes.
Typically, as shown in fig. 1, 7 and 8, the hydraulic fine tuning system 6 is a hydraulic jack. The hydraulic fine tuning system 6 comprises two hydraulic jacks and two mechanical claws 7. The top of the piston of the hydraulic jack is provided with mechanical claws 7, each mechanical claw 7 comprises a base and two clamping claws which are parallel to each other, the base is fixed at the top of the piston, one clamping claw is fixed at one side of the base, a spring is arranged in a cavity in the other side of the base, the other clamping claw can slide relative to the base, and two ends of the spring are respectively connected with the base and the clamping claws. The other clamping jaw can be directly pulled out to clamp the steel arch 9, and the other clamping jaw automatically withdraws after the steel arch 9 is released under the action of the spring.
The lifting platform 5 is provided with the low guardrail, a worker can temporarily fix the steel arch 9 through the mechanical claw 7, when monitoring and measuring the light reflection and pasting the steel bar for drilling, the lifting platform can lift and then drill, the light reflection and pasting are carried out, the protection is carried out through the low guardrail, but the guardrail is not too high, and the installation of the steel arch can be affected.
The travelling system is provided with a hand brake and is provided with a short steel bar which is put down and inserted into the gap of the steel bar net paved on the roof of the excavation trolley 1. The walking system A is longitudinally and transversely moved and directly pushed by workers, and is tensioned by a hand brake after being stabilized, and steel bars are placed in the perforated positions of the lower layer plates of the lifting platform 5, so that the steel bars fall and are inserted into gaps of a steel bar net, and the safety performance is improved.
In another embodiment, described with reference to fig. 1-8, taking the installation of a steel arch at a vault as an example, a method for assisting in the installation of a tunnel steel arch and monitoring a measurement reflective patch is provided; the method comprises the following specific steps:
s1, pushing a traveling system to the tail end of the tunnel portal direction of the excavation trolley 1, and positioning; the hand brake is pulled tightly and the steel bars below are inserted into the steel bar net to realize positioning;
s2, lifting the loader 8 to send the steel arch 9 to the manipulator 7; as shown in fig. 5;
s3, rotating the manipulator 7 to be parallel to a bucket of the loader 8 through rotation of an upper plate of the lifting platform 5, dropping the steel arch 9 by means of the loader 8, and clamping a lower flange plate of the steel arch 9 through the manipulator 7;
s4, controlling the steel arch 9 to be parallel to the travelling direction of the tunnel through rotation of the lifting platform 6, and then fixing an upper plate and a lower plate of the lifting platform 6 by bolts; as shown in fig. 4;
s5, loosening the longitudinal movable handbrake, pulling out the reinforcing steel bars, pushing the traveling system to the position below the vertical arch, tensioning the longitudinal movable handbrake, positioning the longitudinal traveling system, loosening the transverse movable handbrake, controlling the lifting platform 5 to transversely move, coarsely positioning the steel arch 9 by utilizing the hydraulic fine-tuning system, and fixing the transverse traveling system after positioning; the hand brake is transversely moved by tightening, and the steel bars are lowered and inserted into the steel bar net;
s6, controlling a hydraulic fine adjustment system, loosening the manipulator 7, manually fine-adjusting and positioning two adjacent steel arches 9, and then screwing bolts 11; as shown in fig. 6;
s7, drilling and implanting the light reflecting paste reinforcing steel bars through the ascending and descending platform 5 while screwing the bolts in the step S6, and pasting the light reflecting paste 10;
and S8, after the support spraying is finished, controlling the traveling system to longitudinally move to clear the invisible reflective patch, and supplementing the damaged or dropped reflective patch 10.
The present invention has been described in terms of preferred embodiments, but is not limited to the invention, and any equivalent embodiments can be made by those skilled in the art without departing from the scope of the invention, as long as the equivalent embodiments are possible using the above-described structures and technical matters.
Claims (9)
1. The utility model provides a supplementary tunnel steel bow member and control survey reflection of light subsides installation's device which characterized in that: comprises a walking system (A), a lifting platform (5) and a hydraulic fine adjustment system (6);
the walking system (A) is used for positioning the longitudinal and transverse positions of the steel arch (9);
the lifting platform (5) is arranged at the upper part of the travelling system (A), and the lifting platform (5) is used for vertically positioning the steel arch (9) and monitoring the drilling installation and surface cleaning of the measuring reflective paste (10);
the hydraulic fine tuning system (6) is arranged at the upper part of the lifting system (A), and the hydraulic fine tuning system (6) is used for fixing and adjusting the steel arch (9).
2. The apparatus for assisting in installing a tunnel steel arch and monitoring and measuring reflective paste according to claim 1, wherein: the travelling system (A) comprises a longitudinal travelling system, and the longitudinal travelling system comprises a steel rail (2), a steel rail pulley (3) and a rubber tire (4);
the transverse traveling system comprises a steel rail (2) and a steel rail pulley (3);
the steel rail (2) of the longitudinal traveling system is fixed on a beam frame of the roof of the excavation trolley (1), the steel rail pulley (3) of the longitudinal traveling system is fixed on the steel rail (2) of the transverse traveling system and slidably arranged on the steel rail (2) of the longitudinal traveling system, the rubber tire (4) is in rolling contact with longitudinal beams on two sides of the roof of the excavation trolley (1), and the steel rail pulley (3) of the transverse traveling system is fixed at the bottom of the lifting platform (5) and slidably arranged on the steel rail (2) of the transverse traveling system.
3. The apparatus for assisting in installing a tunnel steel arch and monitoring and measuring reflective paste according to claim 1, wherein: the position of a steel rail (2) of the longitudinal traveling system is collinear with the projection of two longitudinal beams of the roof of the excavation trolley (1), and is fixedly connected with a reinforcing mesh paved on the roof of the excavation trolley (1).
4. The apparatus for assisting in installing a tunnel steel arch and monitoring and measuring reflective paste according to claim 1, wherein: the lifting platform (5) is a scissor fork type lifter, the upper layer platform of the scissor fork type lifter is of a double-plate structure, and the upper plate and the lower plate of the double-plate structure can rotate relatively.
5. The apparatus for assisting in installing a tunnel steel arch and monitoring and measuring reflective patch according to claim 4, wherein: the upper plate and the lower plate of the double-plate structure are respectively provided with arc holes at two lateral sides, bolts and nuts of upper knobs are penetrated in the arc holes, the rotatable angle range of the upper plate relative to the lower plate is 0-60 degrees, and any angle position in the angle range is positioned by the bolts and the nuts of the upper plate and the lower plate.
6. The apparatus for assisting in installing a tunnel steel arch and monitoring and measuring reflective paste according to claim 1, wherein: the hydraulic fine adjustment system (6) is a hydraulic jack.
7. The apparatus for assisting in installing a tunnel steel arch and monitoring and measuring reflective patch according to claim 6, wherein: the top of the piston of the hydraulic jack is provided with a mechanical claw (7), the mechanical claw (7) comprises a base and two clamping jaws which are parallel to each other, the base is fixed at the top of the piston, one clamping jaw is fixed at one side of the base, a spring is arranged in a cavity in the other side of the base, the other clamping jaw can slide relative to the base, and two ends of the spring are respectively connected with the base and the clamping jaws.
8. The apparatus for assisting in installing a tunnel steel arch and monitoring and measuring reflective paste according to claim 1, wherein: the travelling system (A) is provided with a hand brake and short steel bars which can be inserted into gaps of a steel bar net paved on the roof of the excavation trolley (1).
9. A method of assisting in the installation of tunnel steel arches and monitoring a measuring reflective patch according to any one of claims 1 to 8, characterized by: the method comprises the following steps:
s1, pushing a traveling system to the tail end of a tunnel portal direction of an excavation trolley (1), and positioning;
s2, lifting the loader (8) to send the steel arch (9) to the manipulator (7);
s3, rotating the manipulator (7) to be parallel to a bucket of the loader (8) through rotation of an upper plate of the lifting platform (5), dropping the steel arch (9) by means of the loader (8), and clamping a lower flange plate of the steel arch (9) through the manipulator (7);
s4, controlling the steel arch (9) to be parallel to the advancing direction of the tunnel through rotation of the lifting platform (6), and then fixing an upper plate and a lower plate of the lifting platform (6) by bolts;
s5, pushing the traveling system to the position below the vertical arch, positioning the longitudinal traveling system, controlling the lifting platform (5) to move transversely, coarsely positioning the steel arch (9) by utilizing the hydraulic fine-tuning system, and fixing the transverse traveling system after positioning;
s6, controlling a hydraulic fine adjustment system, loosening a manipulator (7), manually fine-adjusting and positioning two adjacent steel arches (9), and then screwing bolts (11);
s7, drilling and implanting the reflective patch reinforcement through the lifting platform (5) which is lifted while the bolt is screwed in the step S6, and attaching the reflective patch (10);
and S8, after the support spraying is finished, controlling the traveling system to longitudinally move to clear the invisible reflective patch, and supplementing the damaged or dropped reflective patch (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310515248.0A CN116291493A (en) | 2023-05-09 | 2023-05-09 | Device and method for assisting installation of tunnel steel arch and monitoring and measuring reflective paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310515248.0A CN116291493A (en) | 2023-05-09 | 2023-05-09 | Device and method for assisting installation of tunnel steel arch and monitoring and measuring reflective paste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116291493A true CN116291493A (en) | 2023-06-23 |
Family
ID=86792761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310515248.0A Pending CN116291493A (en) | 2023-05-09 | 2023-05-09 | Device and method for assisting installation of tunnel steel arch and monitoring and measuring reflective paste |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116291493A (en) |
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2023
- 2023-05-09 CN CN202310515248.0A patent/CN116291493A/en active Pending
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