Subgrade camber deformation alarm device and alarm method thereof

Abstract

The application provides a roadbed upwarp deformation alarm device and an alarm method thereof, relates to the technical field of roadbed upwarp detection, and comprises a foundation mounting piece, two expansion positioning pieces are mounted on the foundation mounting piece, the two expansion positioning pieces are respectively used for expanding and positioning the foundation mounting piece, a hole bottom detection part is mounted at the bottom of the foundation mounting piece, and the hole bottom detection part is used for ensuring hole cleaning quality; the detection cone-shaped column is matched with a microswitch, which can be used for prompting the hardness of the hole bottom when the staff installs the installation pipe, further reduces the error of the detection reference, and improves the installation position accuracy; the problems that the current roadbed upwarp deformation alarm device cannot use the rock layer at the bottom of the roadbed as the detection reference, cannot simultaneously detect the roadbed upwarp and tunnel subsidence deformation, and has a small detection range are solved.

Description

Technical Field

[0001] This invention relates to the field of roadbed arching detection technology, and in particular to a roadbed arching deformation alarm device and alarm method. Background Technology

[0002] With the development of engineering construction, the problem of arching deformation of red mudstone subgrades has gradually become prominent. The occurrence of arching deformation is inseparable from the engineering characteristics of red mudstone. Arching deformation of subgrades is one of the most concealed and harmful typical types of defects in tunnel subgrade construction. Due to the strong rheological properties of red mudstone, the road surface is prone to arching and lifting as the service life of the subgrade increases. The current subgrade arching deformation alarm device is mainly a laser rangefinder alarm installed on the inner wall of the tunnel, which can directly detect the subgrade deformation. However, by installing it on the inner wall of the tunnel, the laser sensor is easily interfered with by factors such as fog and dust. At the same time, when the top of the tunnel sinks, it will interfere with the detection benchmark and cause false alarms. The accuracy of the alarm detection benchmark is difficult to guarantee. It is not convenient to use the bottom rock layer of the subgrade as the detection benchmark. At the same time, it is difficult to detect both subgrade arching and tunnel sinking deformation at the same time, and the detection range is small. Summary of the Invention

[0003] This disclosure relates to a roadbed arching deformation alarm device, which solves the problems of current roadbed arching deformation alarm devices not being convenient to use the bottom rock layer of the roadbed as a detection benchmark, and having difficulty in simultaneously detecting roadbed arching and tunnel subsidence deformation, as well as having a small detection range.

[0004] In a first aspect, this disclosure provides a roadbed arching deformation alarm device and alarm method, specifically including a foundation mounting component, on which two expansion positioning components are mounted; the two expansion positioning components are respectively used to expand and position the foundation mounting component; a hole bottom detection part is mounted at the bottom of the foundation mounting component; the hole bottom detection part is used to ensure the quality of hole cleaning; an arching adapter is mounted on the foundation mounting component; an alarm part is mounted on the arching adapter; a control part is externally connected to the alarm part and is installed on the outer edge of the roadbed; the foundation mounting component includes: an installation pipe, an extension pipe, and a threaded connecting sleeve, the bottom inner side of the installation pipe is provided with threads; the extension pipe is threadedly connected to the installation pipe, and the installation pipe and the extension pipe are spot-welded for positioning; a threaded connecting sleeve is fixedly installed inside the installation pipe by bolts, and the inner side of the threaded connecting sleeve is provided with threads; the installation pipe and the threaded connecting sleeve are coaxial; the threaded connecting sleeve is provided with a wire groove.

[0005] In at least some embodiments, the basic mounting component further includes: a propulsion cylinder and a beveled extrusion head, wherein the propulsion cylinder is threadedly connected to a threaded connecting sleeve; a hexagonal block is provided at the top of the propulsion cylinder; a beveled extrusion head is fixedly installed at the bottom of the propulsion cylinder, and a through hole is provided in the middle of the beveled extrusion head; the outer ring of the beveled extrusion head has a beveled structure.

[0006] In at least some embodiments, the expansion positioning element includes: a swing expansion block and anti-slip protrusions; two swing expansion blocks are rotatably mounted on the mounting tube, and the inner sides of the two swing expansion blocks are respectively inclined structures; the two swing expansion blocks are symmetrically arranged; two rows of anti-slip protrusions are fixedly mounted on the two swing expansion blocks respectively, and the anti-slip protrusions are conical structures; the two swing expansion blocks respectively pass through the side wall of the mounting tube; the inclined extrusion head is located between the two swing expansion blocks.

[0007] In at least some embodiments, the borehole bottom detection unit includes: a borehole bottom stop shell, a detection mounting frame, and a laser ranging sensor. The borehole bottom stop shell is threadedly connected to the bottom of the mounting pipe. The detection mounting frame is fixedly installed on the top of the borehole bottom stop shell. The laser ranging sensor is fixedly installed on the detection mounting frame. The laser ranging sensor is coaxial with the propulsion cylinder. The laser ranging sensor is used to detect the camber of the roadbed.

[0008] In at least some embodiments, the bottom hole detection unit further includes: a lower baffle, a sliding column, a detection conical column, a micro switch, and a pressure spring. The lower baffle is fixedly installed at the bottom of the bottom hole stop shell by bolts. The sliding column is slidably sleeved inside the bottom hole stop shell. The detection conical column is fixedly installed at the bottom of the sliding column. The end of the detection conical column is conical. The detection conical column passes through the lower baffle. The micro switch is fixedly installed inside the bottom hole stop shell. The micro switch is located above the sliding column. A pressure spring is sleeved on the inner side of the bottom hole stop shell. One end of the pressure spring is fixedly connected to the inner side of the bottom hole stop shell, and the other end of the pressure spring is fixedly connected to the sliding column.

[0009] In at least some embodiments, the upper arch adapter includes: an adapter tube, a corrugated tube, and an upper connecting tube, wherein the adapter tube is threaded onto the extension tube; a corrugated tube is fixedly installed on the adapter tube; an upper connecting tube is fixedly installed on the top of the corrugated tube; the corrugated tube is used to adapt to the roadbed upper arch; a pipe interface is provided on the side of the upper connecting tube; and a wire through hole is provided on the adapter tube.

[0010] In at least some embodiments, the alarm unit includes: a road surface mounting block, a top bolt, and an alarm light. The road surface mounting block is fixedly mounted on the upper connecting pipe. The road surface mounting block has a threaded hole in the middle, and the top bolt is internally threaded into the threaded hole on the road surface mounting block. The top bolt is located above the laser rangefinder sensor. Two alarm lights are fixedly embedded on the road surface mounting block.

[0011] In at least some embodiments, the control unit includes a controller and an electric fan, the controller and the electric fan being installed along the outer edge of the tunnel subgrade; the air inlet of the electric fan is provided with a filter screen.

[0012] In at least some embodiments, the control unit further includes: an air guide pipe and a solenoid valve, wherein the air guide pipe is fixedly mounted on an electric fan; the end of the air guide pipe is fixedly mounted on an upper connecting pipe; a solenoid valve is fixedly mounted on the air guide pipe; and the controller, solenoid valve, electric fan, alarm light, micro switch, and laser rangefinder are connected in series with a power supply via wires.

[0013] Methods for alarming roadbed arching deformation:

[0014] 1) When the rheological layer of the roadbed arches upward, the pavement concrete will bulge under the pressure of the rheological layer arching upward. At this time, the pavement installation block moves upward together, stretching the corrugated pipe. At this time, the two swing expansion blocks still maintain expansion and hold the stable rock layer below the roadbed.

[0015] 2) When the laser rangefinder detects an increase in the distance between itself and the top bolt, the controller activates the alarm light.

[0016] This invention provides an alarm device and method for roadbed arch deformation, which has the following beneficial effects:

[0017] The installation tube used in this invention can be installed in a stable rock layer area below the roadbed with the expansion positioning component, which can effectively ensure the detection benchmark accuracy of the laser rangefinder sensor. This avoids the problem of the traditional method of installing the laser rangefinder sensor on the top of the tunnel, especially in tunnels with strong rheological properties, where the tunnel top is prone to subsidence, causing false alarms from the laser rangefinder sensor. At the same time, this structure has stronger sealing performance, which can prevent dust or mist from adhering to the laser rangefinder sensor and interfering with the detection accuracy when inspecting roadbed arching.

[0018] Furthermore, the use of a detection cone column in conjunction with a microswitch can indicate the hardness of the hole bottom during installation, further reducing the error of the detection benchmark and improving the accuracy of the installation position. This avoids the bottom of the installation pipe remaining in the rheological layer region with high soil content due to shallow drilling depth. The microswitch can automatically control the circuit on and off of the laser rangefinder sensor, ensuring that the laser rangefinder sensor can only be used normally after the installation position is stable. More importantly, it can detect the loosening of the two swing expansion blocks, preventing displacement of the installation pipe and causing errors in the detection results when the two swing expansion blocks and the hole wall become loose. The use of a detachable top bolt allows the laser rangefinder sensor to directly measure the distance to the top of the tunnel inner wall after the top bolt is removed, facilitating the detection of tunnel inner wall subsidence and further increasing the functionality of this structure.

[0019] In addition, the control unit can use a controller to automatically control the electric fan to compensate for the wind force after the top bolt is removed, and direct the wind force into the upper connecting pipe to spray out, so as to prevent large dust particles or road debris from falling into the installation pipe and causing pollution when the top bolt is removed. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0021] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0022] In the attached diagram:

[0023] Figure 1 A schematic diagram of the roadbed arching deformation alarm device of this application installed behind the tunnel roadbed is shown;

[0024] Figure 2 A schematic diagram of the roadbed arch deformation alarm device structure of this application is shown;

[0025] Figure 3 A cross-sectional view of the overall structure of the basic mounting components of this application is shown;

[0026] Figure 4 A schematic diagram of the propulsion tube structure of this application is shown;

[0027] Figure 5 This application shows Figure 3 Enlarged view of the structure of region A in the middle;

[0028] Figure 6 A schematic diagram of the overall structure of the bottom hole detection section of this application is shown;

[0029] Figure 7 This application shows Figure 3 Enlarged view of the structure of region C in the middle;

[0030] Figure 8 A schematic diagram of the overall structure of the upper arch adapter of this application is shown;

[0031] Figure 9 This application shows Figure 1 Enlarged view of the structure of region D in the middle;

[0032] Figure 10 A cross-sectional view of the installation location of the laser rangefinder sensor of this application is shown.

[0033] List of reference numerals

[0034] 1. Basic installation components; 101. Mounting pipe; 102. Extension pipe; 103. Threaded connecting sleeve; 104. Propulsion cylinder; 1041. Inclined extrusion head; 2. Expansion positioning components; 201. Swinging expansion block; 202. Anti-slip protrusion; 3. Bottom hole detection unit; 301. Bottom hole stop shell; 302. Detection mounting frame; 303. Laser rangefinder sensor; 304. Lower baffle; 305. Sliding column; 3051. Detection conical column; 306. Micro switch; 307. Pressure spring; 4. Upper arch adapter; 401. Adapter pipe; 402. Corrugated pipe; 403. Upper connecting pipe; 5. Alarm unit; 501. Road surface mounting block; 502. Top bolt; 503. Alarm light; 6. Control unit; 601. Controller; 602. Electric fan; 603. Air guide pipe; 604. Solenoid valve. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1: Please refer to Figures 1 to 10 :

[0037] This invention proposes a roadbed arching deformation alarm device, comprising a base mounting component 1, on which two expansion positioning components 2 are mounted; the two expansion positioning components 2 are used to expand and position the base mounting component 1 respectively; a hole bottom detection part 3 is mounted at the bottom of the base mounting component 1; the hole bottom detection part 3 is used to ensure the quality of hole cleaning; an arching adapter 4 is mounted on the base mounting component 1; an alarm part 5 is mounted on the arching adapter 4; a control part 6 is externally connected to the alarm part 5 and is mounted on the outer edge of the roadbed; the base mounting component 1 includes: a mounting pipe 101, an extension pipe 102, and a threaded connecting sleeve 103; the bottom inner side of the mounting pipe 101 is provided with threads; the extension pipe 102 is threadedly connected to the mounting pipe 101, and the mounting pipe 101 and the extension pipe 102 are spot-welded for positioning; the threaded connecting sleeve 103 is fixedly mounted inside the mounting pipe 101 by bolts, and the inner side of the threaded connecting sleeve 103 is provided with threads; the mounting pipe 101 and the threaded connecting sleeve 103 are coaxial; the threaded connecting sleeve 103 is provided with a wire groove.

[0038] In this embodiment, the basic mounting component 1 further includes: a push cylinder 104 and a beveled extrusion head 1041. The push cylinder 104 is threadedly connected to the threaded connecting sleeve 103. A hexagonal block is provided at the top of the push cylinder 104. The beveled extrusion head 1041 is fixedly installed at the bottom of the push cylinder 104, and a through hole is provided in the middle of the beveled extrusion head 1041. The outer ring of the beveled extrusion head 1041 has a beveled structure. The expansion positioning component 2 includes: a swing expansion block 201 and an anti-slip protrusion 202. Two swing expansion blocks 201 are rotatably installed on the mounting tube 101, and the inner sides of the two swing expansion blocks 201 are beveled structures respectively. The two swing expansion blocks 201 are symmetrical. The setup includes two rows of anti-slip protrusions 202 fixedly installed on each of the two swing expansion blocks 201, the anti-slip protrusions 202 being conical in structure; the two swing expansion blocks 201 respectively pass through the side wall of the mounting tube 101; the inclined extrusion head 1041 is located between the two swing expansion blocks 201; the hole bottom detection part 3 includes: a hole bottom stop shell 301, a detection mounting bracket 302, and a laser rangefinder 303, the hole bottom stop shell 301 being threadedly connected to the bottom of the mounting tube 101; the detection mounting bracket 302 is fixedly installed on the top of the hole bottom stop shell 301; the laser rangefinder 303 is fixedly installed on the detection mounting bracket 302; the laser rangefinder 303... 3. The propulsion cylinder 104 is coaxial; the laser rangefinder 303 is used to detect roadbed camber; the mounting tube 101, together with the expansion positioning component 2, can be installed in a stable rock layer area below the roadbed, which can effectively ensure the detection benchmark accuracy of the laser rangefinder 303 and avoid the traditional method of installing the laser rangefinder 303 on the top of the tunnel. Especially in tunnels with strong rheological properties, the tunnel top is also prone to subsidence, causing false alarms of the laser rangefinder 303. This structure is more suitable for accurately detecting roadbed camber and providing alarm prompts. At the same time, this structure utilizes the method of installation below the roadbed, in conjunction with the top screw The bolt 502 is installed on the road surface mounting block 501 to improve sealing. During routine inspection of roadbed camber, it can prevent dust or mist from adhering to the laser rangefinder sensor 303 and interfering with the detection accuracy. The alarm control of this structure is simple. An electric wrench is used to connect to the push cylinder 104 and drive the push cylinder 104 to rotate. The push cylinder 104 will spiral down inside the threaded connecting sleeve 103, driving the inclined extrusion head 1041 to extrude the two swing expansion blocks 201. Utilizing the inclined structure on the inner side of the swing expansion block 201, the two swing expansion blocks 201 can be controlled to expand outward, driving the anti-slip protrusion 202 to expand stably and clamp onto the hole wall, realizing the positioning work.

[0039] In this embodiment, the hole bottom detection unit 3 further includes: a lower baffle 304, a sliding column 305, a detection conical column 3051, a micro switch 306, and a pressure spring 307. The lower baffle 304 is fixedly installed at the bottom of the hole bottom stop shell 301 by bolts; the sliding column 305 is slidably sleeved inside the hole bottom stop shell 301; the detection conical column 3051 is fixedly installed at the bottom of the sliding column 305; the end of the detection conical column 3051 has a conical structure; the detection conical column 3051 passes through the lower baffle 304; the micro switch 306 is fixedly installed inside the hole bottom stop shell 301; the micro switch 306 is located above the sliding column 305; the pressure spring 307 is sleeved on the inner side of the hole bottom stop shell 301; one end of the pressure spring 307 is fixedly connected inside the hole bottom stop shell 301. On one side, the other end of the pressure spring 307 is fixedly connected to the sliding column 305; the upper arch adapter 4 includes: an adapter tube 401, a corrugated tube 402, and an upper connecting tube 403. The adapter tube 401 is threadedly connected to the extension tube 102; the corrugated tube 402 is fixedly installed on the adapter tube 401; the upper connecting tube 403 is fixedly installed on the top of the corrugated tube 402; the corrugated tube 402 is used to adapt to the roadbed upper arch; the upper connecting tube 403 has a pipe interface on its side; the adapter tube 401 has a wire hole; the alarm unit 5 includes: a road surface mounting block 501, a top bolt 502, and an alarm light 503. The road surface mounting block 501 is fixedly installed on the upper connecting tube 403; the road surface mounting block 501 has a threaded hole in the middle, and the top bolt is threaded into the threaded hole on the road surface mounting block 501. Bolt 502; the top bolt 502 is located above the laser rangefinder 303; a TF400SC7 laser rangefinder 303 and its matching controller 601 can be used; two alarm lights 503 are fixedly embedded on the road mounting block 501; a detection cone 3051 is used in conjunction with a micro switch 306 to indicate to the worker the hardness of the bottom of the hole when installing the installation pipe 101, further reducing the error of the detection benchmark, improving the accuracy of the installation position, and avoiding the bottom of the installation pipe 101 remaining in the rheological layer area with high soil content due to shallow drilling depth, or the hole depth not meeting the standard due to a large amount of residual soil inside the hole after drilling, preventing the bottom of the installation pipe 101 from being lowered into the stable rock layer. The 306 can automatically control the circuit switching of the laser rangefinder 303, ensuring that the laser rangefinder 303 can be used normally after the installation position is stable. More importantly, it can detect the loosening of the two swing expansion blocks 201, preventing the installation tube 101 from shifting and causing errors in the detection results when the two swing expansion blocks 201 and the hole wall become loose. The detachable top bolt 502 makes it easy to remove the top bolt 502, allowing the laser rangefinder 303 to directly measure the distance to the top of the tunnel inner wall, which is convenient for detecting the subsidence of the tunnel inner wall. This further increases the functionality of the structure, eliminating the need for a separate detection structure for tunnel subsidence. Under normal use, it can still meet the detection and alarm prompts for roadbed arching.When the installation tube 101 is inserted into the ground borehole, the detection cone 3051 needs to be pressed against the bottom of the hole to stabilize the rock layer. If the bottom of the hole is stable rock, it will compress the detection cone 3051, pushing the sliding column 305 upward to compress the pressure spring 307. At this time, the micro switch 306 will be pressed, and the laser rangefinder sensor 303 can be powered on normally to perform laser measurement.

[0040] In Embodiment 2, based on Embodiment 1, the control unit 6 includes: a controller 601 and an electric fan 602, which are installed on the outer edge of the tunnel roadbed; the air inlet of the electric fan 602 is equipped with a filter screen; the control unit 6 further includes: an air guide pipe 603 and a solenoid valve 604, the air guide pipe 603 is fixedly installed on the electric fan 602; the end of the air guide pipe 603 is fixedly installed on the upper connecting pipe 403; the solenoid valve 604 is fixedly installed on the air guide pipe 603; the controller 601, the solenoid valve 604, and the solenoid valve 604 are also included. Valve 604, electric fan 602, alarm light 503, micro switch 306, and laser rangefinder 303 are connected in series with a power supply via wires. The control unit 6 can use the controller 601 to automatically control the electric fan 602 to perform wind compensation after the top bolt 502 is removed, directing the wind into the upper connecting pipe 403 to spray out. This prevents large dust particles or road debris from falling into the installation pipe 101 when the top bolt 502 is removed, thus avoiding contamination of the laser rangefinder 303 and affecting the accuracy of the detection results.

[0041] Methods for alarming roadbed arching deformation:

[0042] 1) When the rheological layer of the roadbed arches upward, the road concrete will bulge under the pressure of the rheological layer arching. At this time, the road installation block 501 moves upward together and stretches the corrugated pipe 402. At this time, the two swing expansion blocks 201 still maintain expansion and hold the stable rock layer below the roadbed.

[0043] 2) When the laser rangefinder 303 detects an increase in the distance between itself and the top bolt 502, the controller 601 controls the alarm light 503 to turn on and sound an alarm.

[0044] The working principle of this embodiment is as follows: During tunnel construction, this structure is installed below the tunnel subgrade. During installation, a hole is first drilled in the ground to ensure the drilling depth reaches a stable rock layer. Then, the installation pipe 101 is inserted into the hole. At this point, the detection cone column 3051 needs to be pressed against the stable rock layer at the bottom of the hole. If the bottom of the hole is a stable rock layer, it will compress the detection cone column 3051, pushing the sliding column 305 upwards and compressing the pressure spring 307. At this time, the microswitch 306 will be pressed, and the laser rangefinder 303 can move normally. When laser measurement is performed under constant power, if there is incompletely cleaned soil at the bottom of the hole or the drilling depth is insufficient and the hole remains in the soil area, the soft bottom of the hole cannot effectively stop the detection cone 3051 when the installation tube 101 is inserted into the hole under the elastic compression of the pressure spring 307. At this time, the detection cone 3051 will gradually insert into the soil, and the corresponding micro switch 306 will not be able to be pressed. It is necessary to adjust it in time to ensure that the basic hardness of the bottom of the hole meets the standard, rather than being a rheological soil layer, so as to improve the accuracy of the alarm prompt; subsequently An electric wrench can be used to connect to the push cylinder 104 and drive it to rotate. The push cylinder 104 will spiral downward within the threaded connecting sleeve 103, causing the inclined extrusion head 1041 to press the two swing expansion blocks 201. Utilizing the inclined structure on the inner side of the swing expansion blocks 201, the two swing expansion blocks 201 can be controlled to expand outward, causing the anti-slip protrusion 202 to expand stably and clamp onto the hole wall, achieving positioning. Subsequently, normal work such as concrete paving of the roadbed can be carried out, keeping the road surface installation block 501 embedded in the paved concrete. Concrete pavement is acceptable, and the corrugated pipe 402 is located within the subgrade soil. After the two swing expansion blocks 201 expand and fit against the borehole wall, if the two swing expansion blocks 201 and the borehole wall become loose due to factors such as poor density of the surrounding rock at the bottom of the borehole, the detection cone column 3051 will be pushed out and the installation pipe 101 will be pushed up under the push of the pressure spring 307. At this time, the micro switch 306 will not be pressed, and the laser range sensor 303 will not be able to be powered on normally to perform laser measurement. It is necessary to handle it manually in time.

[0045] During subsequent use of the roadbed, the distance between the laser ranging sensor 303 and the top bolt 502 can be measured using laser. If, with prolonged use, the rheological layer of the roadbed arches upwards, the pavement concrete will bulge under the pressure of the arching rheological layer. At this time, the pavement mounting block 501 can be moved upwards to lengthen the corrugated pipe 402 for adaptation. Meanwhile, the two swing expansion blocks 201 remain expanded and clamped to the stable rock layer. The laser ranging sensor 303 can detect the increased spacing, and the controller 601 can control the alarm light 503 to illuminate and provide an alarm. If tunnel subsidence detection is required, the top bolt 502 can be directly driven by a wrench. After disassembly, the laser emitted by the laser ranging sensor 303 is no longer blocked. At this time, the laser ranging sensor 303 can directly measure the distance to the tunnel wall. The distance parameter can be manually compared to see if it has decreased. After removing the top bolt 502, the laser ranging sensor 303 can directly detect the increase in distance. The controller 601 will also control the electric fan 602 to start and supply air force. At the same time, it controls the solenoid valve 604 to open. At this time, the air force is guided from the air duct 603 to the upper connecting pipe 403 and discharged from the top of the upper connecting pipe 403 to achieve air force protection. The air pressure is used to prevent large dust particles or road impurities from falling into the installation pipe 101.

[0046] The following points should be noted in this article:

[0047] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0048] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0049] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A roadbed arch deformation alarm device, comprising a foundation mounting component (1), wherein two expansion positioning components (2) are mounted on the foundation mounting component (1); characterized in that: The bottom of the basic installation component (1) is equipped with a hole bottom detection part (3); An upper arch adapter (4) is installed on the basic installation component (1); an alarm unit (5) is installed on the upper arch adapter (4); a control unit (6) is connected to the alarm unit (5), and the control unit (6) is installed on the outer edge of the roadbed; The basic installation component (1) includes: an installation pipe (101), an extension pipe (102), and a threaded connecting sleeve (103). The extension pipe (102) is threadedly connected to the installation pipe (101); the threaded connecting sleeve (103) is fixedly installed inside the installation pipe (101) by bolts.

2. The roadbed arching deformation alarm device according to claim 1, characterized in that, The basic mounting component (1) further includes: a push cylinder (104) and a beveled extrusion head (1041). The push cylinder (104) is threadedly connected to the threaded connecting sleeve (103). The top of the push cylinder (104) is provided with a hexagonal block. The bottom end of the push cylinder (104) is fixedly installed with a beveled extrusion head (1041), and the beveled extrusion head (1041) is provided with a through hole in the middle. The outer ring of the beveled extrusion head (1041) is a beveled structure.

3. The roadbed arching deformation alarm device according to claim 2, characterized in that, The expansion positioning component (2) includes: a swing expansion block (201) and an anti-slip protrusion (202). Two swing expansion blocks (201) are rotatably mounted on the mounting tube (101), and the inner sides of the two swing expansion blocks (201) are respectively inclined structures. Two rows of anti-slip protrusions (202) are fixedly mounted on the two swing expansion blocks (201), and the anti-slip protrusions (202) are conical structures. The inclined extrusion head (1041) is located between the two swing expansion blocks (201).

4. The roadbed arching deformation alarm device according to claim 3, characterized in that, The bottom hole detection unit (3) includes: a bottom hole stop shell (301), a detection mounting frame (302), and a laser rangefinder (303). The bottom hole stop shell (301) is threaded to the bottom of the mounting tube (101). The detection mounting frame (302) is fixedly installed on the top of the bottom hole stop shell (301). The laser rangefinder (303) is fixedly installed on the detection mounting frame (302). The laser rangefinder (303) and the propulsion cylinder (104) are coaxial. The laser rangefinder (303) is used to detect the camber of the roadbed.

5. The roadbed arching deformation alarm device according to claim 4, characterized in that, The bottom hole detection unit (3) further includes: a lower baffle (304), a sliding column (305), a detection cone column (3051), a micro switch (306), and a pressure spring (307). The lower baffle (304) is fixedly installed at the bottom of the bottom hole stop shell (301) by bolts. The sliding column (305) is slidably sleeved inside the bottom hole stop shell (301). The detection cone column (3051) is fixedly installed at the bottom of the sliding column (305). The end of the detection cone column (3051) It has a conical structure; the detection conical column (3051) passes through the lower baffle (304); the micro switch (306) is fixedly installed inside the bottom stop shell (301); the micro switch (306) is located above the sliding column (305); a pressure spring (307) is sleeved on the inner side of the bottom stop shell (301); one end of the pressure spring (307) is fixedly connected to the inner side of the bottom stop shell (301), and the other end of the pressure spring (307) is fixedly connected to the sliding column (305).

6. The roadbed arching deformation alarm device according to claim 5, characterized in that, The upper arch adapter (4) includes: an adapter pipe (401), a corrugated pipe (402) and an upper connecting pipe (403). The adapter pipe (401) is threaded onto the extension pipe (102). The corrugated pipe (402) is fixedly installed on the adapter pipe (401). The upper connecting pipe (403) is fixedly installed on the top of the corrugated pipe (402). The corrugated pipe (402) is used to adapt to the roadbed upper arch.

7. The roadbed arching deformation alarm device according to claim 6, characterized in that, The alarm unit (5) includes: a road mounting block (501), a top bolt (502), and an alarm light (503). The road mounting block (501) is fixedly mounted on the upper connecting pipe (403). The road mounting block (501) has a threaded hole in the middle, and the top bolt (502) is threaded into the threaded hole on the road mounting block (501). The top bolt (502) is located above the laser rangefinder sensor (303). Two alarm lights (503) are fixedly embedded on the road mounting block (501).

8. The roadbed arching deformation alarm device according to claim 7, characterized in that, The control unit (6) includes a controller (601) and an electric fan (602), which are installed on the outer edge of the tunnel subgrade.

9. The roadbed arching deformation alarm device according to claim 8, characterized in that, The control unit (6) further includes: an air duct (603) and a solenoid valve (604). The air duct (603) is fixedly installed on the electric fan (602). The end of the air duct (603) is fixedly installed on the upper connecting pipe (403). The solenoid valve (604) is fixedly installed on the air duct (603). The controller (601), the solenoid valve (604), the electric fan (602), the alarm light (503), the micro switch (306), and the laser rangefinder (303) are connected in series with a power supply via wires.

10. A method for alarming roadbed arching deformation, using the roadbed arching deformation alarm device as described in claim 8, characterized in that, The steps include: 1) When the rheological layer of the roadbed arches upward, the road concrete will bulge under the pressure of the rheological layer arching. At this time, the road installation block (501) moves upward together and stretches the corrugated pipe (402). At this time, the two swing expansion blocks (201) still maintain expansion and hold the stable rock layer below the roadbed. 2) When the laser rangefinder (303) detects an increase in the distance between itself and the top bolt (502), the controller (601) controls the alarm light (503) to turn on and sound an alarm.

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