CN217424264U - High-precision tunnel deformation real-time monitoring device based on stay cord displacement meter - Google Patents
High-precision tunnel deformation real-time monitoring device based on stay cord displacement meter Download PDFInfo
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- CN217424264U CN217424264U CN202220695047.4U CN202220695047U CN217424264U CN 217424264 U CN217424264 U CN 217424264U CN 202220695047 U CN202220695047 U CN 202220695047U CN 217424264 U CN217424264 U CN 217424264U
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- displacement meter
- stay cord
- tunnel
- power supply
- cord displacement
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Abstract
The utility model discloses a high-precision tunnel deformation real-time monitoring device based on a stay cord displacement meter, which comprises a stay cord displacement meter and a data acquisition power supply instrument connected with the stay cord displacement meter, wherein the stay cord displacement meter mainly comprises a steel wire disc, a coding disc sensor and a power supply signal cable; the steel wire wound on the steel wire disk is tied with a permanent magnet and penetrates through the hollow pipe to be connected with the iron sheet; the power supply signal cable is connected with the data acquisition power supply instrument through the power supply signal connecting cable. Use the utility model discloses the time, need monitor deformation zone in the tunnel and drill to arrange according to the design and draw together the stay cord displacement meter. The collected data power supply instrument connected with the stay cord displacement meter can monitor the deformation of the surface of the tunnel in real time, and solves the problems that the deformation of the tunnel is not monitored in real time, multiple interferences exist and the precision of the existing monitoring method is low. To sum up, the utility model has the characteristics of simple structure, convenient operation, low interference, high accuracy etc, be suitable for real-time supervision tunnel deformation in tunnel construction.
Description
Technical Field
The utility model belongs to the technical field of underground tunnel construction monitoring, especially, relate to a based on stay cord displacement meter high accuracy tunnel deformation real-time supervision device.
Background
In the tunnel construction process, a total station or a high-precision level gauge and a convergence ruler are usually adopted for tunnel deformation monitoring, but the function of tunnel real-time deformation monitoring cannot be realized, and when measuring points are arranged more, the workload of measuring personnel is large, and meanwhile, the influences of manual reading errors and the like exist. In view of the above disadvantages, chinese patent "tunnel monitoring method based on three-dimensional laser scanning" (published patent No. 201710135845.5 on 2017, 7 and 7) discloses that contactless measurement can be rapidly performed using three-dimensional laser scanning; the chinese patent "tunnel deformation real-time monitoring method based on millimeter-wave radar" (published patent No. 201910844123.6, 2020, 1 month, 17 days) proposes a tunnel deformation real-time monitoring method based on millimeter-wave radar. However, these methods cannot guarantee various interference problems such as busy tunnel operation, machine and operator, radar reflection signals of steel supports and the like in the tunnel, and the like.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a based on stay cord displacement meter high accuracy tunnel deformation real-time supervision device of a simple structure, convenient operation, low interference, high accuracy.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a high-precision tunnel deformation real-time monitoring device based on a stay cord displacement meter comprises the stay cord displacement meter and a data acquisition power supply meter connected with the stay cord displacement meter, wherein the stay cord displacement meter mainly comprises a steel wire disc, a coding disc sensor and a power supply signal cable; the steel wire wound on the steel wire disk is tied with a permanent magnet and penetrates through the hollow pipe to be connected with the iron sheet; the power supply signal cable is connected with the data acquisition power supply instrument through the power supply signal connecting cable.
The hollow pipe is arranged at the inner section of the tunnel drill hole, and the iron sheet is arranged at the bottom of the tunnel drill hole.
The stay cord displacement meter is arranged at the outer section of the tunnel drilling hole and is fixed on the tunnel through a flange plate; the flange plate is provided with a flange plate sleeve, and the flange plate sleeve is arranged at the outer section of the tunnel drilling hole.
Aiming at the problems existing in the current tunnel deformation monitoring, the inventor designs a high-precision tunnel deformation real-time monitoring device based on a stay cord displacement meter, which comprises a stay cord displacement meter and a data acquisition power supply meter connected with the stay cord displacement meter, wherein the stay cord displacement meter mainly comprises a steel wire disc, a coding disc sensor and a power supply signal cable; the steel wire wound on the steel wire disk is tied with a permanent magnet and penetrates through the hollow pipe to be connected with the iron sheet; the power supply signal cable is connected with the data acquisition power supply instrument through the power supply signal connecting cable. Use the utility model discloses the time, need monitor deformation zone in the tunnel and drill to arrange according to the design and draw together the stay cord displacement meter. The collected data power supply instrument connected with the stay cord displacement meter can monitor the deformation of the surface of the tunnel in real time, and solves the problems that the deformation of the tunnel is not monitored in real time, multiple interferences exist and the precision of the existing monitoring method is low. To sum up, the utility model has the characteristics of simple structure, convenient operation, low interference, high accuracy etc, be suitable for real-time supervision tunnel deformation in tunnel construction.
Drawings
Fig. 1 is the utility model discloses based on stay cord displacement meter high accuracy tunnel deformation real-time supervision device's structure and arrangement process schematic diagram.
Fig. 2 is a schematic diagram of the field monitoring implemented by the present invention.
In the figure: 1 drilling axis, 2 tunnel surfaces, 3 drilling inner sections, 4 drilling outer sections, 5 hollow tubes, 6 iron sheets, 7 flange plate sleeves, 8 flange plates, 9 screw holes, 10 permanent magnets, 11 steel wires, 12 steel wire plates, 13 coding plate sensors, 14 power supply signal cables, 15 stay cord displacement meters, 16 temporary thin rods, 17 bolts, 18 data acquisition power supply instruments and 19 power supply signal connection cables.
Detailed Description
A, basic structure
As shown in fig. 1-2, the utility model discloses a based on stay cord displacement meter high accuracy tunnel deformation real-time supervision device, take into account its collection data power supply appearance 18 of connecting including the stay cord displacement. The pull rope displacement meter 15 mainly comprises a steel wire disc, a coding disc sensor 13 and a power supply signal cable 14; the stay cord displacement meter is arranged at the outer section of the tunnel drilling hole and is fixed on the tunnel through a flange plate; the flange plate is provided with a flange plate sleeve, and the flange plate sleeve is arranged at the outer section (hole expanding section) of the tunnel drilling hole. The hollow pipe is arranged at the inner section of the tunnel drilling hole, the iron sheet is arranged at the bottom of the tunnel drilling hole, and the steel wire wound on the steel wire disk passes through the hollow pipe to be connected with the iron sheet by the permanent magnet; the power supply signal cable is connected with the data acquisition power supply instrument through a power supply signal connecting cable 19.
Second, the application method
As shown in fig. 1 to 2, a hole is drilled in a deformation monitoring area of a tunnel, and the hole is drilled out of a surrounding rock loosening ring of tunnel excavation along a drilling axis 1 and is reamed. After drilling, placing an iron sheet at one end of the hollow pipe, smearing an anchoring agent on the outer walls of the iron sheet and the hollow pipe 5, conveying the hollow pipe and the iron sheet 6 to the bottom of a hole to be drilled, bonding the iron sheet with the bottom of the hole, and bonding the hollow pipe with the hole wall of the inner section 3 of the hole to be drilled; coating an anchoring agent on the outer wall of a flange plate sleeve 7, sending the flange plate sleeve into a tunnel drilling outer section 4 (a hole expanding section) and fixing the flange plate 8 on the wall of a hole, enabling a flange plate 8 to be tightly attached to the surface 2 of the tunnel, pulling one end of a steel wire 11 of a stay cord displacement meter out of a steel wire disc 12 and tying the steel wire to a permanent magnet 10, sending the permanent magnet into the bottom of the hole by adopting a temporary thin rod 16 to enable the permanent magnet to be magnetically attracted on an iron sheet at the bottom of the hole, pulling out the temporary thin rod, enabling the stay cord displacement meter to automatically retract the steel wire, and connecting and fixing the stay cord displacement meter with a screw hole 9 of the flange plate through a bolt 17; the power supply signal cable 14 of the stay cord displacement meter is connected with the collected data power supply instrument to acquire deformation data, when section multipoint deformation monitoring is needed, a plurality of monitoring drill holes and the stay cord displacement meter are arranged by repeating the steps, the power supply signal cable of the stay cord displacement meter of each monitoring drill hole is connected with the collected data power supply instrument through the lengthened power supply signal connecting cable, and tunnel multipoint deformation is carried out in real time.
When the orifice surrounding rock deforms into the excavation space, the steel wire extends out of the steel wire disc, the steel wire disc is driven to rotate, the steel wire disc rotation variable is obtained through the coding disc sensor of the stay cord displacement meter, and then the real-time surface deformation of the tunnel is measured.
Claims (3)
1. A high-precision tunnel deformation real-time monitoring device based on a stay cord displacement meter is characterized by comprising a stay cord displacement meter and a data acquisition power supply instrument connected with the stay cord displacement meter, wherein the stay cord displacement meter mainly comprises a steel wire disc, a coding disc sensor and a power supply signal cable; the steel wire wound on the steel wire disk is tied with a permanent magnet and penetrates through the hollow pipe to be connected with the iron sheet; the power supply signal cable is connected with the data acquisition power supply instrument through the power supply signal connecting cable.
2. The high-precision tunnel deformation real-time monitoring device based on the pull rope displacement meter as claimed in claim 1, is characterized in that: the hollow pipe is arranged at the inner section of the tunnel drilling hole, and the iron sheet is arranged at the bottom of the tunnel drilling hole.
3. The high-precision tunnel deformation real-time monitoring device based on the pull rope displacement meter as claimed in claim 2, is characterized in that: the stay cord displacement meter is arranged at the outer section of the tunnel drilling hole and is fixed on the tunnel through a flange plate; the flange plate is provided with a flange plate sleeve, and the flange plate sleeve is arranged at the outer section of the tunnel drilling hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220695047.4U CN217424264U (en) | 2022-03-28 | 2022-03-28 | High-precision tunnel deformation real-time monitoring device based on stay cord displacement meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220695047.4U CN217424264U (en) | 2022-03-28 | 2022-03-28 | High-precision tunnel deformation real-time monitoring device based on stay cord displacement meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217424264U true CN217424264U (en) | 2022-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220695047.4U Active CN217424264U (en) | 2022-03-28 | 2022-03-28 | High-precision tunnel deformation real-time monitoring device based on stay cord displacement meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217424264U (en) |
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2022
- 2022-03-28 CN CN202220695047.4U patent/CN217424264U/en active Active
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