Roadway deformation monitoring and early warning device

Abstract

The utility model belongs to the technical field of mine roadway construction, and discloses a roadway deformation monitoring and early warning device which comprises a movable box and further comprises an adjusting plate sliding on the surface of the movable box, the inner wall of the adjusting plate is rotationally connected with a roller, the adjusting plate is connected with the roller through a driving motor, a datum line is wound on the surface of the roller, and the datum line is connected with the movable box. A connecting rope is fixedly connected to one side of the adjusting plate, an adjusting assembly used for pulling the adjusting plate to adjust the position is arranged at one end of the connecting rope, and a positioning assembly used for fixing the position of the adjusting plate is arranged on the surface of the movable box. The datum line is stretched to the position perpendicular to the roadway from the vertical position through the adjusting assembly, the tension of the rope body is monitored in real time according to the tension sensor in the period, and the driving motor drives the roller to rotate, wind and tighten the datum line; therefore, when the datum line is perpendicular to the inclined roadway, the rope body tension is still the same as that during natural drooping, and the measurement accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine tunnel construction, in particular to a tunnel deformation monitoring and early warning device. Background Art

[0002] Underground tunnels are an important underground engineering structure, usually used for transportation, drainage, water supply, power supply, etc. As underground tunnels are located deep underground, they are affected by many factors such as geology and hydrology, and are easily affected by factors such as groundwater level changes, geological structure changes, and earthquakes, which can lead to deformation and damage of the tunnel structure.

[0003] The cross-point method is a commonly used method for monitoring deformation of tunnels. The principle is to set a series of cross-points on the tunnel wall and mark each point with a number. During the use of the tunnel, the position coordinates of each point are measured regularly, and then the deformation of the tunnel wall can be analyzed by comparing the measurement data.

[0004] The cross-point method is usually set up in a relatively flat tunnel. At present, when the cross-point method is used to monitor deformation inside the tunnel, multiple monitoring stations need to be arranged, and a group of stations are mostly located in the same plane, so the vertical wiring will cross the horizontal wiring. However, it is inconvenient to carry out in a more inclined tunnel with insufficient horizontality. Since the vertical wiring is affected by gravity and points vertically downward, it is inconvenient to be perpendicular to the tunnel, resulting in the vertical monitoring line and the horizontal monitoring line cannot cross normally, and it is difficult to measure the change in the displacement of the position coordinate. Utility Model Content

[0005] The purpose of the utility model is to provide a tunnel deformation monitoring and early warning device to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tunnel deformation monitoring and early warning device, comprising a movable box, and also comprising an adjustment plate sliding on the surface of the movable box, the inner wall of the adjustment plate is rotatably connected to a roller, the adjustment plate is connected to the roller through a driving motor, a reference line is wound on the surface of the roller, one side of the adjustment plate is fixedly connected to a connecting rope, one end of the connecting rope is provided with an adjustment component for pulling the adjustment plate to adjust the position, and the surface of the movable box is provided with a positioning component for fixing the position of the adjustment plate.

[0007] Preferably, a tension sensor is installed on the surface of the reference line, and the tension sensor is connected to the adjustment board via a data line. A controller is also installed in the adjustment board, and the controller is electrically connected to the tension sensor and the drive motor respectively.

[0008] Preferably, the adjustment assembly includes a connecting plate slidably connected to the bottom of the movable box, the inner wall of the movable box is rotatably connected to a fixed pulley, the end of the connecting rope away from the adjustment plate passes around the fixed pulley and is fixedly connected to the connecting plate, and a weight block is provided on the side of the connecting plate close to the fixed pulley.

[0009] Preferably, the connecting plate is connected to the movable box via a spring.

[0010] Preferably, the positioning assembly comprises a positioning block slidably connected to the surface of the movable box, both sides of the positioning block are threadedly connected with positioning bolts, and the positioning bolts abut against the movable box.

[0011] Preferably, a laser emitter is installed near the center of the surface of the positioning block.

[0012] Preferably, a magnetic block is fixedly connected to one side of the positioning block close to the adjustment plate, and the adjustment plate is a plate with magnetization characteristics.

[0013] Preferably, it further comprises a support box, the movable box is slidably connected to the inner wall of the support box, and slide grooves are provided on both sides of the support box, and sliders are fixedly connected on both sides of the movable box, and the sliders are slidably connected in the slide grooves.

[0014] Preferably, blocks adapted to the slider are hinged on both sides of the support box.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model sets a movable box and a support box, draws out a reference line at the top station of the inclined tunnel, sets the movable box and the support box according to the normal drooping position of the reference line to ensure the accurate position of the pulled reference line, and stretches the reference line from a vertical position to a position perpendicular to the tunnel through an adjusting component, during which the tension of the rope is monitored in real time according to a tension sensor, and the driving motor drives the drum to rotate and wind the tightened reference line to ensure that the reference line is still at the same rope tension as when it is naturally drooping when it is perpendicular to the inclined tunnel, thereby improving the accuracy of subsequent measurements, and by setting a positioning component, a laser transmitter is emitted upward to further determine the vertical foot position of the tunnel bottom and the station, thereby improving the positioning accuracy, so that the wiring in the inclined tunnel with insufficient levelness still has a high monitoring accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the utility model for showing the state of the movable box when sliding in the supporting box;

[0019] Figure 3 This is a schematic diagram of the utility model for showing the internal structure of the activity box;

[0020] Figure 4 This is a schematic diagram for displaying the positioning component of the utility model.

[0021] In the figure: 1. movable box; 11. slider; 2. support box; 21. slide groove; 22. clamping block; 3. adjustment plate; 31. drive motor; 311. roller; 32. reference line; 321. tension sensor; 322. data line; 4. connecting rope; 41. fixed pulley; 42. connecting plate; 43. spring; 44. weight block; 5. positioning block; 51. positioning bolt; 52. magnetic block; 53. laser transmitter. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 4 As shown, an embodiment of the utility model provides a tunnel deformation monitoring and early warning device, including a movable box 1, and also includes an adjusting plate 3 sliding on the surface of the movable box 1. The inner wall of the adjusting plate 3 is rotatably connected to a roller 311, and the adjusting plate 3 is connected to the roller 311 through a driving motor 31. The driving motor 31 is fixedly connected to the adjusting plate 3, and its output end is axially connected to one side of the roller 311, which can drive the roller 311 to rotate. A reference line 32 is wound on the surface of the roller 311, and the upper end of the reference line 32 is connected to the top station position of the tunnel, and is wound on the surface of the roller 311 after naturally sagging. A connecting rope 4 is fixedly connected to one side of the adjusting plate 3, and one end of the connecting rope 4 is provided with an adjusting component for pulling the adjusting plate 3 to adjust the position, and a positioning component for fixing the position of the adjusting plate 3 is provided on the surface of the movable box 1.

[0024] Specifically, the movable box 1 is placed obliquely on the ground of the tunnel, and its placement direction is consistent with the direction of travel of the tunnel. The adjustment plate 3 is pulled by the adjustment component, so that the roller 311 on the surface of the adjustment plate 3 drives the wound reference line 32 to slowly move to a position perpendicular to the ground of the tunnel, thereby ensuring that the reference line 32 and the horizontal measuring lines on both sides of the tunnel remain in a cross state.

[0025] Furthermore, in the present embodiment, a tension sensor 321 is installed on the surface of the reference line 32, and the tension sensor 321 is connected to the adjustment plate 3 via a data line 322. A controller is also installed in the adjustment plate 3, and the controller is electrically connected to the tension sensor 321 and the drive motor 31 respectively. The tension sensor 321 is used to detect the surface tension of the reference line 32, that is, the tensile force, to prevent the reference line 32 from being too loose and failing to monitor the deformation of the tunnel, and to prevent the reference line 32 from being too tight, resulting in inaccurate monitoring of the deformation of the tunnel. The monitoring range of the tension sensor 321 is set to the range of tension applied to the reference line 32 when it is normally drooping. When it is too loose or too tight, the tension sensor 321 transmits a signal to the controller, and the controller controls the drive motor 31 to drive the roller 311 to rotate, thereby adjusting the winding strength and the tension on the reference line 32.

[0026] The adjusting assembly includes a connecting plate 42 slidably connected to the bottom of the movable box 1, and the inner wall of the movable box 1 is rotatably connected to the fixed pulley 41. The end of the connecting rope 4 away from the adjusting plate 3 passes around the fixed pulley 41 and is fixedly connected to the connecting plate 42. A weight block 44 is provided on the side of the connecting plate 42 close to the fixed pulley 41. Specifically, through the setting of the weight block 44, since the movable box 1 is placed on the inclined tunnel ground, the weight block 44 will drive the connecting plate 42 to slide downward under the action of gravity, and then pull the connecting rope 4. Since the connecting rope 4 passes around the fixed pulley 41, the force changes in the opposite direction, which will pull up the adjusting plate 3, and drive the adjusting plate 3 and the reference line 32 wrapped on the surface roller 311 thereof to move up to gradually become perpendicular to the tunnel.

[0027] Furthermore, the connecting plate 42 is connected to the movable box 1 through a spring 43, and both ends of the spring 43 are fixedly connected to the connecting plate 42 and the movable box 1 respectively. By setting the spring 43, when the load block 44 presses down the connecting plate 42, the spring 43 is used for buffering to prevent the connecting plate 42 from sliding down too fast, affecting the sliding speed of the adjustment plate 3, and further affecting the stability of the reference line 32 during the movement. In addition, the spring 43 can facilitate the return of the connecting plate 42 to the center.

[0028] like Figure 3 and Figure 4 As shown, in this embodiment, the positioning assembly includes a positioning block 5 slidably connected to the surface of the movable box 1, and positioning bolts 51 are threadedly connected on both sides of the positioning block 5. The positioning bolts 51 abut against the movable box 1. According to the perpendicular point of the reference line 32, the position of the positioning block 5 is adjusted by sliding, and the positioning block 5 is fixed by tightening the positioning bolts 51, thereby blocking the moving position of the adjustment plate 3 to prevent the reference line 32 from missing the perpendicular point under the continuous downward pressure of the weight block 44.

[0029] Furthermore, in this embodiment, a laser emitter 53 is installed near the center of the surface of the positioning block 5. By setting the laser emitter 53, it is convenient to aim the laser at the station at the top of the tunnel, so as to more accurately determine the stop position of the reference line 32.

[0030] Among them, a magnetic block 52 is fixedly connected to the side of the positioning block 5 close to the adjustment plate 3. The adjustment plate 3 is a plate with magnetization characteristics. When the adjustment plate 3 moves close to the positioning block 5, it will be adsorbed by the magnetic block 52, thereby ensuring the stability of positioning.

[0031] like Figure 1 and Figure 2 As shown, it also includes a support box 2, a movable box 1 is slidably connected to the inner wall of the support box 2, and slide grooves 21 are opened on both sides of the support box 2, and sliders 11 are fixedly connected on both sides of the movable box 1, and the sliders 11 are slidably connected in the slide grooves 21. When it is used in a lane with a large inclination angle, when the distance between the vertical point from the station to the lane ground and the reference line 32 is far, the movable box 1 can be pulled out of the support box 2 to extend the placement distance, so as to facilitate the connection with the roller 311 at the natural drooping point of the reference line 32.

[0032] Furthermore, blocks 22 adapted to the slider 11 are hinged on both sides of the support box 2. The blocks 22 are rotated to be clamped on the slider 11, thereby positioning the slider 11 so that it cannot slide in the slide groove 21, thereby fixing the movable box 1.

[0033] Working principle:

[0034] When in use, first draw out the reference line 32 from the station at the top of the tunnel, wait for it to droop naturally and no longer shake, then place the support box 2 at the foot point close to the station to the tunnel ground, with the support box 2 placed in a direction parallel to the tunnel. If necessary, pull out the movable box 1 from the surface of the support box 2 to extend the placement distance, pull the adjustment plate 3 below the naturally drooping reference line 32, and wind the reference line 32 on the roller 311 at this position, then adjust the position of the positioning block 5 according to the laser emitted by the laser emitter 53, until the laser emitted by the laser emitter 53 moves to the station position where the reference line 32 is drawn out at the top of the tunnel, and by twisting Tighten the positioning bolt 51 to fix the positioning block 5, then loosen the adjusting plate 3, and push the connecting plate 42 downward under the action of the load block 44. The connecting plate 42 simultaneously pulls the connecting rope 4, and after the connecting rope 4 passes around the fixed pulley 41, the adjusting plate 3 is pulled forward to move toward the position of the positioning block 5. During this period, the tension sensor 321 senses the pulling force on the reference line 32 in real time, and cooperates with the driving motor 31 to drive the roller 311 to rotate, thereby always keeping the reference line 32 within an appropriate tension force range until the adjusting plate 3 moves to the position of the positioning block 5 and is adsorbed and fixed by the magnetic block 52, and then the pulling of the reference line 32 is completed.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel deformation monitoring and early warning device, comprising a movable box (1), characterized in that: The invention also comprises an adjustment plate (3) which slides on the surface of the movable box (1); the inner wall of the adjustment plate (3) is rotatably connected to a roller (311); the adjustment plate (3) is connected to the roller (311) via a driving motor (31); a reference line (32) is wound around the surface of the roller (311); one side of the adjustment plate (3) is fixedly connected to a connecting rope (4); one end of the connecting rope (4) is provided with an adjustment component for pulling the adjustment plate (3) to adjust the position; and the surface of the movable box (1) is provided with a positioning component for fixing the position of the adjustment plate (3).

2. A tunnel deformation monitoring and early warning device according to claim 1, characterized in that: A tension sensor (321) is installed on the surface of the reference line (32), and the tension sensor (321) is connected to the adjustment plate (3) via a data line (322). A controller is also installed in the adjustment plate (3), and the controller is electrically connected to the tension sensor (321) and the drive motor (31), respectively.

3. The tunnel deformation monitoring and early warning device according to claim 1 is characterized in that: The adjustment assembly comprises a connecting plate (42) slidably connected to the inner bottom of the movable box (1); the inner wall of the movable box (1) is rotatably connected to a fixed pulley (41); one end of the connecting rope (4) away from the adjustment plate (3) passes around the fixed pulley (41) and is fixedly connected to the connecting plate (42); and a load block (44) is provided on one side of the connecting plate (42) close to the fixed pulley (41).

4. A tunnel deformation monitoring and early warning device according to claim 3, characterized in that: The connecting plate (42) is connected to the movable box (1) via a spring (43).

5. The tunnel deformation monitoring and early warning device according to claim 1 is characterized in that: The positioning assembly comprises a positioning block (5) slidably connected to the surface of the movable box (1), and both sides of the positioning block (5) are threadedly connected with positioning bolts (51), and the positioning bolts (51) abut against the movable box (1).

6. A tunnel deformation monitoring and early warning device according to claim 5, characterized in that: A laser emitter (53) is installed near the center of the surface of the positioning block (5).

7. The tunnel deformation monitoring and early warning device according to claim 5 is characterized in that: A magnetic block (52) is fixedly connected to one side of the positioning block (5) close to the adjustment plate (3); the adjustment plate (3) is a plate with magnetization characteristics.

8. The tunnel deformation monitoring and early warning device according to claim 1 is characterized in that: It also comprises a support box (2), the movable box (1) is slidably connected to the inner wall of the support box (2), and both sides of the support box (2) are provided with slide grooves (21), and both sides of the movable box (1) are fixedly connected with sliders (11), and the sliders (11) are slidably connected in the slide grooves (21).

9. The tunnel deformation monitoring and early warning device according to claim 8, characterized in that: Blocks (22) adapted to the slider (11) are hingedly connected on both sides of the support box (2).

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