Monitoring system, monitoring method and related equipment for soft rock tunnel loose circle strain

Abstract

The application discloses a soft rock tunnel loose circle strain monitoring system, a monitoring method and related equipment. The monitoring system comprises a supporting structure, the supporting structure is provided with a plurality of mounting holes, the plurality of mounting holes are arranged in an array, and the supporting structure is used for supporting a tunnel; a plurality of strain monitoring units, each strain monitoring unit is telescopically connected to the supporting structure through the mounting hole, and the strain monitoring unit is used for collecting tunnel loose circle strain data; in the case of collecting data, the plurality of strain monitoring units are extended from the supporting structure and inserted into the loose circle. The strain of multiple positions of the tunnel loose circle can be monitored at the same time, the collected data is more comprehensive, the monitoring data is more accurate, the monitoring efficiency is improved, human intervention is reduced, and the cooperation of the mounting holes and the strain monitoring units makes the positions of each monitoring same, so that the strain of the fixed position of the loose circle is tracked and researched subsequently.

Description

Technical Field

[0001] The present invention relates to the technical field of loosening zone strain monitoring in soft rock tunnels, and in particular to a monitoring system, a monitoring method and related equipment for the loosening zone strain in soft rock tunnels. Background Art

[0002] The size of the tunnel loosening zone is an important basis for the design of tunnel support parameters. After the support structure is erected, the strain of the loosening zone changes with the movement of the stratum structure, thereby affecting the support effect. Therefore, the strain of the loosening zone needs to be monitored to determine whether the support structure needs to be reinforced. Currently, staff need to monitor the loosening zone through monitoring equipment. However, the process of monitoring the loosening zone will be affected by the complex geological structure of the soft rock and the detection location. It is impossible to determine whether the monitoring results are accurate, which is easy to cause misjudgment. In addition, the monitoring efficiency is low, and it is impossible to complete the monitoring of multiple locations at the same time.

[0003] Therefore, it is necessary to invent a monitoring system, a monitoring method and related equipment for the loosening zone strain of a soft rock tunnel. Summary of the Invention

[0004] The embodiments of the present invention aim to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, a first objective of an embodiment of the present invention is to provide a monitoring system for the loosening zone strain of a soft rock tunnel.

[0006] A second objective of the embodiments of the present invention is to provide a method for monitoring the strain of the loosening zone of a soft rock tunnel.

[0007] A third objective of an embodiment of the present invention is to provide an electronic device.

[0008] A fourth objective of an embodiment of the present invention is to provide a computer-readable storage medium.

[0009] In order to achieve the above-mentioned object, the technical solution of the first aspect of the present invention provides a monitoring system for the loosening zone strain of a soft rock tunnel, characterized by comprising:

[0010] A supporting structure, wherein the supporting structure is provided with a plurality of mounting holes, the plurality of mounting holes are arranged in an array, and the supporting structure is used to support the tunnel;

[0011] Multiple strain monitoring units, each of which is telescopically connected to the support structure through the mounting hole, and the strain monitoring unit is used to collect strain data of the tunnel loosening circle. When collecting data, multiple strain monitoring units extend from the support structure and are inserted into the loosening circle.

[0012] In addition, the monitoring system for loosening zone strain in soft rock tunnels in the above technical solution provided by the embodiment of the present invention may also have the following additional technical features:

[0013] In one technical solution of the present invention, the monitoring system for the loosening zone strain of a soft rock tunnel further includes:

[0014] A geological radar detector is used to detect the range of the loose circle.

[0015] In one technical solution of the present invention, the strain monitoring unit includes:

[0016] a telescopic rod, the telescopic rod passing through the mounting hole and connected to the supporting structure, one end of the telescopic rod being provided with a conversion head;

[0017] a drill bit connected to the conversion head, the drill bit being used to drill a hole in the loose ring;

[0018] A water spraying device, connected to the conversion head, for spraying water on the drill bit;

[0019] The strain monitoring module is connected to the conversion head and is used to be inserted into the loose ring to collect the strain data of the loose ring.

[0020] In one technical solution of the present invention, the strain monitoring module includes:

[0021] an ultrasonic monitor connected to the conversion head;

[0022] The multi-point displacement meter is connected to the conversion head.

[0023] In one technical solution of the present invention, the strain monitoring unit further includes:

[0024] A controller controls the working states of the telescopic rod, the conversion head, the drill bit, the water spraying device, the ultrasonic monitor, and the multi-point displacement meter according to the process of collecting the strain data of the loosening circle of the tunnel.

[0025] In one technical solution of the present invention, the monitoring system for the loosening zone strain of a soft rock tunnel further includes:

[0026] An alarm device is connected to the strain monitoring unit and issues an alarm when the strain monitoring unit detects that the strain data of the loose ring is abnormal.

[0027] The second aspect of the present invention provides a method for monitoring the strain of the loosening zone of a soft rock tunnel, which is used in the monitoring system described in any of the above technical solutions. The monitoring system includes an ultrasonic monitor and a multi-point displacement meter, and the monitoring method includes:

[0028] Acquiring a loosening zone range of the tunnel, and installing the strain monitoring unit on the support structure at the location of the loosening zone;

[0029] Drilling holes in the loose circle according to the range of the loose circle;

[0030] Collecting first strain information by the ultrasonic monitor and collecting second strain information by the multi-point displacement meter;

[0031] The first strain information and the second strain information are compared. When a difference between the first strain information and the second strain information is smaller than a preset value, an average value of the first strain information and the second strain information is used as the loose ring strain information.

[0032] In one technical solution of the present invention, the preset value is less than or equal to 0.75 meters.

[0033] The technical solution of the third aspect of the present invention provides an electronic device, including:

[0034] A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is configured to implement the steps of the method for monitoring the loosening zone strain of a soft rock tunnel as described in any of the above technical solutions when executing the computer program stored in the memory.

[0035] The technical solution of the fourth aspect of the present invention provides a computer-readable storage medium on which a computer program is stored, characterized in that when the computer program is executed by a processor, the method for monitoring the loosening zone strain of a soft rock tunnel as described in any of the above technical solutions is implemented.

[0036] Compared with the prior art, the present invention has at least the following beneficial effects:

[0037] The monitoring system for the strain of the loosening zone of a soft rock tunnel described in the present invention is provided with a support structure and a plurality of strain monitoring units, wherein the support structure is used to support the tunnel and prevent the tunnel from deforming, and a plurality of mounting holes are provided on the support structure, and the plurality of mounting holes are arranged in an array, corresponding to the left side, the arch and the right side of the tunnel, and the plurality of strain monitoring units are retractably connected to the support structure through the mounting holes. When it is necessary to collect the strain data of the loosening zone, the strain monitoring unit extends from the support structure and is inserted into the loosening zone to monitor the strain of the loosening zone. After completing the data collection operation, the strain monitoring unit is retracted into the support structure to facilitate the maintenance of the strain monitoring unit and increase the service life. With such a setting, the strain of multiple positions of the loosening zone of the tunnel can be monitored at the same time, the data collected is more comprehensive, the monitoring data is more accurate, the monitoring efficiency is improved, and human intervention is reduced. Moreover, the coordinated use of the mounting holes and the strain monitoring units makes the monitoring position the same each time, which facilitates the subsequent tracking and research of the strain at the fixed position of the loosening zone.

[0038] The monitoring system, monitoring method and related equipment for the loosening zone strain of a soft rock tunnel described in the present invention, as well as other advantages, objectives and features of the present invention will be partially reflected in the following description and will also be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments with reference to the accompanying drawings, in which:

[0040] Figure 1 A schematic structural diagram of a monitoring system for loosening zone strain in a soft rock tunnel provided in accordance with an embodiment of the present application is shown;

[0041] Figure 2 A schematic structural diagram of a strain monitoring unit for loosening zone strain in a soft rock tunnel provided in accordance with an embodiment of the present application is shown;

[0042] Figure 3 A schematic flow chart of a method for monitoring the loosening zone strain of a soft rock tunnel provided in accordance with an embodiment of the present application is shown;

[0043] Figure 4 A structural block diagram of an electronic device provided according to an embodiment of the present application is shown;

[0044] Figure 5 A structural block diagram of a computer-readable storage medium provided according to an embodiment of the present application is shown.

[0045] in, Figure 1 and Figure 2 The corresponding relationship between the reference numerals and component names is as follows:

[0046] 100 support structure, 200 mounting hole, 300 strain monitoring unit; 310 telescopic rod, 311 conversion head, 320 drill bit, 330 water spray device, 340 strain monitoring module. DETAILED DESCRIPTION

[0047] In order to better understand the above technical solution, the technical solution of the embodiment of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiment of the present application and the specific features in the embodiment are detailed descriptions of the technical solution of the embodiment of the present application, rather than limitations on the technical solution of the present application. In the absence of conflict, the embodiment of the present application and the technical features in the embodiment can be combined with each other.

[0048] like Figure 1 As shown, according to the first aspect of an embodiment of the present application, a monitoring system for the strain of the loosening zone of a soft rock tunnel is proposed, comprising: a support structure 100, wherein the support structure 100 is provided with a plurality of mounting holes 200, wherein the plurality of mounting holes 200 are arranged in an array, and the support structure 100 is used to support the tunnel; a plurality of strain monitoring units 300, wherein each of the strain monitoring units 300 is retractably connected to the support structure 100 through the mounting hole 200, and the strain monitoring unit 300 is used to collect the strain data of the loosening zone of the tunnel. When collecting data, the plurality of strain monitoring units 300 extend from the support structure 100 and are inserted into the loosening zone.

[0049] It can be understood that the monitoring system for the strain of the loosening circle of the soft rock tunnel is provided with a support structure 100 and multiple strain monitoring units 300, wherein the support structure 100 is used to support the tunnel and prevent the tunnel from deformation, and a plurality of mounting holes 200 are provided on the support structure 100, and the plurality of mounting holes 200 are arranged in an array, corresponding to the left side, arch and right side of the tunnel, and the plurality of strain monitoring units 300 are retractably connected to the support structure 100 through the mounting holes 200. When it is necessary to collect the strain data of the loosening circle, the strain monitoring unit 300 extends from the support structure 100 and is inserted into the loosening circle to monitor the strain of the loosening circle. After completing the data collection operation, the strain monitoring unit 300 is retracted into the support structure 100 to facilitate the maintenance of the strain monitoring unit 300 and increase its service life. Such a setting can monitor the strains at multiple positions of the loosening ring of the tunnel at the same time, collect data more comprehensively, make the monitoring data more accurate, improve monitoring efficiency, reduce human intervention, and the coordinated use of the mounting hole 200 and the strain monitoring unit 300 makes the monitoring position the same each time, which is convenient for subsequent tracking and research on the strain at the fixed position of the loosening ring.

[0050] In some examples, the monitoring system for the strain of the loosening zone of a soft rock tunnel further includes: a geological radar detector, which is used to detect the range of the loosening zone.

[0051] It can be understood that by repeatedly detecting the loose circle with a geological radar detector to eliminate the interference caused by the tunnel support structure 100 and air factors, the position of the loose circle can be accurately detected, thereby determining the position where the strain monitoring unit 300 will be buried in the loose circle, thereby ensuring the reliability of monitoring data collection.

[0052] In some examples, the strain monitoring unit 300 includes: a telescopic rod 310, which is connected to the support structure 100 through the mounting hole 200, and a conversion head 311 is provided at one end of the telescopic rod 310; a drill bit 320, which is connected to the conversion head 311, and the drill bit 320 is used to drill holes in the loosening ring; a water spraying device 330, which is connected to the conversion head 311 and is used to spray water on the drill bit 320; and a strain monitoring module 340, which is connected to the conversion head 311 and is used to be inserted into the loosening ring to collect the strain data of the loosening ring.

[0053] It can be understood that the above-mentioned strain monitoring unit 300 is provided with a telescopic rod 310, and a conversion head 311 is provided at one end of the telescopic rod 310 close to the loosening ring. Specifically, a plurality of joints are provided on the conversion head 311, and the drill bit 320, the water spraying device 330 and the strain monitoring module 340 are respectively connected to different conversion heads 311. By switching the currently working conversion head 311, the operations of drilling, spraying water and collecting the strain data of the loosening ring are realized.

[0054] It is understandable that the telescopic rod 310 is a hollow structure, so that the cable of the drill bit 320, the water pipe of the water spraying device 330 and the cable of the strain monitoring module 340 can be stored in the telescopic rod 310 for protection.

[0055] It is understandable that the loosening ring can be drilled by the drill bit 320, and the distance between the drill bit 320 and the loosening ring can be adjusted by adjusting the length of the telescopic rod 310. During the drilling process of the drill bit 320, the water spray device 330 is started, and the water nozzle of the water spray device 330 is adjusted toward the drill bit 320 to spray coolant to the drill bit 320, cool the drill bit 320, and play a lubricating role to ensure that the drill bit 320 can work normally. When the detection hole is completed, the conversion head 311 where the strain monitoring module 340 is located is adjusted so that the strain monitoring module 340 is aligned with the detection hole. According to the position of the loosening ring detected by the geological radar detector, the strain monitoring module 340 is extended into the specified depth of the detection hole to monitor the strain of the loosening ring and collect data. This reduces human intervention and ensures the accuracy of the drilling position, so as to facilitate subsequent tracking and research on the strain at the same position of the loosening ring.

[0056] Exemplarily, the conversion head 311 is spherical, and multiple joints are located on the spherical surface. The position of each joint can be adjusted by rotating the spherical conversion head 311.

[0057] Exemplarily, the strain monitoring unit 300 is also provided with an air pump, the air nozzle is connected to one of the joints, the air pipe is arranged in the telescopic rod 310, one end of the air pipe is connected to the air nozzle, and the other end is connected to the air pump. After the drilling operation is completed, the conversion head 311 where the air nozzle is located is adjusted so that the air nozzle is aligned with the detection hole, and high-pressure gas is sprayed into the detection hole through the air nozzle to blow dry the water in the detection hole, and dredge the detection hole to remove the mud structure attached to the detection hole wall and the detection hole, thereby reducing interference with the collection of monitoring data.

[0058] In some examples, the strain monitoring module 340 includes: an ultrasonic monitor connected to the converter head 311 ; and a multi-point displacement meter connected to the converter head 311 .

[0059] It is understandable that the strain monitoring module 340 is provided with an ultrasonic monitor and a multi-point displacement meter, wherein the ultrasonic monitor and the multi-point displacement meter are respectively connected to different joints. After the detection hole is completed, by adjusting the length of the conversion head 311 and the telescopic rod 310 where the ultrasonic monitor is located, the ultrasonic monitor is located at the pointing position in the detection hole, and the range of the loose circle is detected by emitting ultrasonic waves. After continuously collecting data for a period of time, the strain of the loose circle can be determined based on the ultrasonic detection data. By adjusting the length of the conversion head 311 and the telescopic rod 310 where the multi-point displacement meter is located, the multi-point displacement meter is located in the detection hole, and the loose circle is determined according to the displacement of different depths tested. The range of the loose circle at the point where the final displacement growth rate is significantly slower than the previous section is recorded. After continuously collecting data for a period of time, the strain of the loose circle can be determined based on the detection data of the multi-point displacement meter. The strain of the loose circle is determined by two methods, and the data can be verified with each other, further improving the accuracy of the data.

[0060] For example, the ultrasonic monitor can use a dual-receiver sonic logging instrument. When the collected data shows that the depth starting point where the sonic wave increases significantly and maintains a small fluctuation is the loosening zone range, after continuously collecting data for a period of time, the strain condition of the loosening zone can be determined based on the detection data of the dual-receiver sonic logging instrument.

[0061] In some examples, the strain monitoring unit 300 further includes: a controller, which controls the working states of the telescopic rod 310, the conversion head 311, the drill bit 320, the water spraying device 330, the ultrasonic monitor and the multi-point displacement meter according to the process of collecting the strain data of the loosening circle of the tunnel.

[0062] It is understandable that the strain monitoring unit 300 is further provided with a controller, to which the telescopic rod 310, the conversion head 311, the drill bit 320, the water spray device 330, the ultrasonic monitor and the multi-point displacement meter are respectively connected. The controller controls the working states of the telescopic rod 310, the conversion head 311, the drill bit 320, the water spray device 330, the ultrasonic monitor and the multi-point displacement meter according to the progress of collecting the strain data of the loosening zone of the tunnel, thereby improving the degree of automation and reducing human intervention.

[0063] In some examples, the soft rock tunnel loosening zone strain monitoring system further includes: an alarm device connected to the strain monitoring unit 300 , which issues an alarm when the strain monitoring unit 300 detects abnormal loosening zone strain data.

[0064] It can be understood that the above-mentioned monitoring system for the loosening zone strain of the soft rock tunnel is also provided with an alarm device, which is connected to the strain monitoring unit 300. When the strain monitoring unit 300 detects that the loosening zone strain data is abnormal, an alarm is issued to remind the staff to check the situation of the abnormal location of the loosening zone strain to make corresponding responses, and check the status of the support structure 100 at that location to ensure the stability of the tunnel.

[0065] like Figure 2 As shown, according to the second aspect of the embodiment of the present application, a method for monitoring the strain of the loosening zone of a soft rock tunnel is proposed. The monitoring system includes: an ultrasonic monitor and a multi-point displacement meter. The monitoring method includes:

[0066] S101: Obtain the range of the loosening zone of the tunnel, and install the strain monitoring unit 300 on the support structure 100 at the location of the loosening zone. It is understood that the range of the loosening zone of the tunnel can be preliminarily determined by detecting the designated area of ​​the tunnel with a geological radar detector, and then installing the strain monitoring unit 300 on the support structure 100 corresponding to the loosening zone. The loosening zone is monitored by the strain monitoring unit 300 to obtain strain data of the loosening zone.

[0067] It is understandable that in order to eliminate interference from factors such as the tunnel support structure 100 and the air in the tunnel, it is necessary to take the average value of multiple detection data of the geological radar detector as the loosening zone range value.

[0068] S102: drilling a hole in the loose circle according to the range of the loose circle. It is understandable that, according to the range of the loose circle, a detection hole is drilled in the loose circle, and the drilling depth is slightly deeper than the maximum value of the loose circle range.

[0069] S103: Collecting first strain information using the ultrasonic monitor and second strain information using the multi-point displacement meter. It is understood that the ultrasonic monitor is inserted into the probe hole. When the collected data indicates that the depth at which the acoustic wave increases significantly and maintains a small fluctuation is the starting point of the loosening zone, the first strain information is determined based on the changes in the collected loosening zone data after a preset number of days. The multi-point displacement meter is inserted into the probe hole, and the loosening zone is determined based on the displacement measured at different depths. The final displacement growth rate is recorded as being significantly slower than the previous point, and the second strain information is determined based on the changes in the collected loosening zone data after a preset number of days.

[0070] S104: Comparing the first strain information with the second strain information. If the difference between the first and second strain information is less than a preset value, the average of the first and second strain information is used as the loose zone strain information. It is understood that by comparing the first and second strain information, if the difference between the first and second strain information is less than the preset value, it indicates that the strain data collected by the two methods are consistent and mutually corroborative, and the obtained data is accurate. The average of the first and second strain information is used as the loose zone strain information. If the difference between the first and second strain information is greater than the preset value, it indicates that one of the two detection methods has failed, requiring inspection of the detection hole, checking the ultrasonic monitor and the multi-point displacement meter, and repeating the detection process until the difference between the first and second strain information is less than the preset value.

[0071] In some examples, the preset value is less than or equal to 0.75 meters.

[0072] It can be understood that when the difference between the first strain information and the second strain information is less than 0.75 meters, it means that the strain data collected by the two methods are relatively consistent and can verify each other. The obtained data is accurate, and the average of the first strain information and the second strain information is taken as the loose circle strain information.

[0073] like Figure 3 As shown, according to the third aspect of an embodiment of the present application, an electronic device 500 is proposed, comprising: a memory 501, a processor 502, and a computer program stored in the above-mentioned memory and executable on the above-mentioned processor, characterized in that the above-mentioned processor is used to implement the steps of the method for monitoring the loosening zone strain of a soft rock tunnel as described in any of the above-mentioned technical solutions when executing the computer program stored in the memory.

[0074] The electronic device 500 provided in the embodiment of the present application, after obtaining the loosening zone range of the above-mentioned tunnel, sets up the above-mentioned strain monitoring unit 300 on the above-mentioned support structure 100 at the position of the above-mentioned loosening zone; drills the above-mentioned loosening zone according to the above-mentioned loosening zone range; collects the first strain information through the above-mentioned ultrasonic monitor, and collects the second strain information through the above-mentioned multi-point displacement meter; compares the above-mentioned first strain information and the above-mentioned second strain information, and when the difference between the above-mentioned first strain information and the above-mentioned second strain information is less than a preset value, uses the average value of the above-mentioned first strain information and the above-mentioned second strain information as the above-mentioned loosening zone strain information. The strain data collected by the two collection methods are relatively consistent and can verify each other. The obtained data are accurate, and the strains of multiple positions of the loosening zone of the tunnel can be monitored at the same time, and the collected data is more comprehensive, which improves the monitoring efficiency and reduces human intervention.

[0075] In some examples, the control device 500 may further include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a Wi-Fi module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a Wi-Fi interface), etc.

[0076] In an exemplary embodiment, the control device 500 may further include an input / output interface and a display device, wherein the various functional units may communicate with each other via a bus. The memory stores a computer program, and the processor is configured to execute the program stored in the memory and perform the method in the above embodiment.

[0077] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the physical device used in the above method, supporting the execution of the information processing program and other software and / or programs. The network communication module is used to enable communication between components within the storage medium and with other hardware and software within the physical information processing device.

[0078] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform, or by hardware.

[0079] like Figure 4 As shown, according to the fourth aspect of the embodiment of the present application, a computer-readable storage medium 401 is proposed, and the computer-readable storage medium 401 stores a computer program 402 to implement the method for monitoring the loosening zone strain of a soft rock tunnel of any of the above technical solutions.

[0080] The computer-readable storage medium 401 provided in the embodiment of the present application, after obtaining the loosening zone range of the above-mentioned tunnel, sets up the above-mentioned strain monitoring unit 300 on the above-mentioned support structure 100 at the position of the above-mentioned loosening zone; drills the above-mentioned loosening zone according to the above-mentioned loosening zone range; collects the first strain information through the above-mentioned ultrasonic monitor, and collects the second strain information through the above-mentioned multi-point displacement meter; compares the above-mentioned first strain information and the above-mentioned second strain information, and when the difference between the above-mentioned first strain information and the above-mentioned second strain information is less than the preset value, takes the average value of the above-mentioned first strain information and the above-mentioned second strain information as the above-mentioned loosening zone strain information. The strain data collected by the two collection methods are relatively consistent and can verify each other. The obtained data are accurate, and the strains of multiple positions of the loosening zone of the tunnel can be monitored at the same time, the collected data is more comprehensive, the monitoring efficiency is improved, and human intervention is reduced.

[0081] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, USB flash drive, mobile hard disk, etc.), including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each implementation scenario of the present application.

[0082] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise expressly defined, the orientations or positional relationships indicated by the terms "upper" and "lower" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. The terms "connect," "install," and "fix" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0083] In the description of the present invention, the terms "one embodiment," "some embodiments," "specific embodiments," etc., mean that the specific features, structures, materials, or characteristics described in accordance with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be used in any suitable manner in any one or more embodiments or examples.

[0084] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A monitoring system for loosening zone strain in soft rock tunnels, characterized by: include: A supporting structure, wherein the supporting structure is provided with a plurality of mounting holes, the plurality of mounting holes are arranged in an array, and the supporting structure is used to support the tunnel; a plurality of strain monitoring units, each of which is retractably connected to the support structure through the mounting hole, and is used to collect strain data of the loosening ring of the tunnel. When collecting data, the plurality of strain monitoring units extend from the support structure and are inserted into the loosening ring; The strain monitoring unit comprises: a telescopic rod, the telescopic rod passing through the mounting hole and connected to the supporting structure, one end of the telescopic rod being provided with a conversion head; a drill bit connected to the conversion head, the drill bit being used to drill a hole in the loose ring; A water spraying device, connected to the conversion head, for spraying water on the drill bit; A strain monitoring module is connected to the conversion head and is used to be inserted into the loose ring to collect the strain data of the loose ring, including: an ultrasonic monitor connected to the conversion head; The multi-point displacement meter is connected to the conversion head.

2. The monitoring system for loosening zone strain of soft rock tunnel according to claim 1 is characterized in that: Also includes: A geological radar detector is used to detect the range of the loose circle.

3. The monitoring system for loosening zone strain of soft rock tunnel according to claim 1 is characterized in that: The strain monitoring unit further includes: A controller controls the working states of the telescopic rod, the conversion head, the drill bit, the water spraying device, the ultrasonic monitor, and the multi-point displacement meter according to the process of collecting the strain data of the loosening circle of the tunnel.

4. The monitoring system for loosening zone strain of soft rock tunnel according to claim 1 is characterized in that: Also includes: An alarm device is connected to the strain monitoring unit and issues an alarm when the strain monitoring unit detects that the strain data of the loose ring is abnormal.

5. A method for monitoring the loosening zone strain of a soft rock tunnel, used in the monitoring system according to any one of claims 1 to 4, characterized in that: The monitoring system includes: an ultrasonic monitor and a multi-point displacement meter, and the monitoring method includes: Acquiring a loosening zone range of the tunnel, and installing the strain monitoring unit on the support structure at the location of the loosening zone; Drilling holes in the loose circle according to the range of the loose circle; Collecting first strain information by the ultrasonic monitor and collecting second strain information by the multi-point displacement meter; The first strain information and the second strain information are compared. When a difference between the first strain information and the second strain information is smaller than a preset value, an average value of the first strain information and the second strain information is used as the loose ring strain information.

6. The method for monitoring the loosening zone strain of a soft rock tunnel according to claim 5 is characterized in that: The preset value is less than or equal to 0.75 meters.

7. An electronic device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is configured to implement the steps of the method for monitoring the loosening zone strain of a soft rock tunnel as claimed in claim 5 or 6 when executing the computer program stored in the memory.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for monitoring the loosening zone strain of a soft rock tunnel as claimed in claim 5 or 6 is implemented.

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