A slope stability monitoring method and system based on laser positioning

Abstract

The present invention relates to a method and system for monitoring slope stability based on laser positioning. The specific steps are as follows: a number of fixed bases are set at the detection points on the slope surface of the slope, and two laser transmitters A and B separated by a fixed distance are included on the base; observation point A and observation point B are set at intervals at the stable foundation at the bottom of the slope, and a laser induction plate is set on each of observation point A and observation point B; each laser transmitter is made to emit laser towards the laser induction plate of the corresponding observation point in turn, and the initial position where the laser beam emitted by each laser transmitter irradiates on the laser induction plate of the observation point is recorded; the difference in the relative distances and the number of deviations of the corresponding points of each laser transmitter on the laser induction plate relative to the initial position at several time points are compared, and it is judged whether the slope deforms or the equipment fails according to a predetermined monitoring strategy, and a warning message is sent out.

Description

Technical Field

[0001] The present invention relates to the technical field of slope geological disaster engineering, and specifically to a slope stability monitoring method and system based on laser positioning. Background Technique

[0002] Slope stability monitoring is a key monitoring point both during the construction stage and after completion. Once slope deformation occurs, it may trigger slope collapse, causing losses to personnel and property.

[0003] Currently, slope inspection techniques are generally divided into two categories. One is the traditional slope monitoring technique using optical instruments. This technique sets up an observation base point at a place with stable geological structure, sets up observation points on the slope, and then observes the change in the spatial distance between the observation points and the observation base point through optical instruments. All monitoring needs to be completed through manual observation.

[0004] The other category adopts new automatic observation techniques, including:

[0005] 1. The slope monitoring technique using a positioning system. This technique sets up observation points on the slope, and a positioning system is installed on each observation point. The slope deformation is monitored by the deviation between the real-time spatial positioning feedback by the positioning system and the initial positioning.

[0006] 2. The slope monitoring technique using lidar scanning. This technique scans the entire slope with lidar to collect point cloud data, and then monitors the slope situation by analyzing the deviation between the measured data and the design through software.

[0007] The method 2 in the above-mentioned automatic observation techniques is adopted in the prior art CN113160523B, a high slope stability monitoring and warning system and method.

[0008] In the above-mentioned solutions, an observation base point is set at a place with stable geological structure, and observation points are set on the slope. When the area of the slope is large, the time, economic, and labor costs required are relatively high. Summary of the Invention

[0009] In order to solve the problems existing in the above-mentioned prior art, the present invention proposes a slope stability monitoring method and system based on laser positioning.

[0010] The technical solution of the present invention is as follows:

[0011] On the one hand, the present invention proposes a slope stability monitoring method based on laser positioning, including the following specific steps:

[0012] Set a number of fixed bases at the detection points on the slope surface of the slope. The bases include two laser transmitters A and B separated by a fixed distance.

[0013] Observation points A and B are respectively set at the stable foundation at the bottom of the slope, and a laser induction plate is set on each of observation points A and B;

[0014] Record the positions where the laser beams emitted by all the initial laser emitters A hit the laser induction plate at observation point A and the positions where the laser beams emitted by laser emitter B hit the laser induction plate at observation point B as the initial positions at the start of the observation;

[0015] Compare the difference in the relative distances of the corresponding points of each laser emitter on the laser induction plate at several time points relative to the initial positions and the number of deviation times, determine whether the slope deforms or whether the equipment fails, and send a warning message.

[0016] As a preferred implementation manner, in the step of determining whether the slope deforms or whether the equipment fails according to a predetermined monitoring strategy, the monitoring strategy is specifically:

[0017] When the number of times the deviation value of the corresponding irradiation point of any one laser emitter on observation points A and B from the initial position exceeds the specified requirement in a day is greater than the specified number of times, send a slope deformation risk warning.

[0018] When the laser injection situation of a certain detection point is not detected on observation points A and B, and neither of the two laser induction plates at A and B detects the observation point, directly determine that the deviation of the position detected this time from the initial position exceeds the specified requirement and the deviation is large, and directly send a slope deformation risk warning.

[0019] Monitor the laser injected into any one detection point on observation points A and B multiple times. When the observation deviations of more than half of the two observation points A and B exceed the specified requirement, it is considered that there is a problem with the laser induction plate of one of the observation points or the laser emitter of the detection point, and a fault warning is sent.

[0020] As a preferred implementation manner, all the laser emitters emit laser beams in sequence from top to bottom and from left to right.

[0021] On the other hand, the present invention proposes a slope stability monitoring system based on laser positioning, including:

[0022] A monitoring device positioning module: A number of fixed bases are set at the detection points on the slope surface of the slope. The bases include two laser emitters A and B separated by a fixed distance. Observation points A and B are respectively set at the stable foundation at the bottom of the slope, and a laser induction plate is set on each of observation points A and B;

[0023] Monitoring data recording module: Record the positions where the laser beams emitted by all the initial laser emitters A irradiate on the laser induction plate at observation point A and the positions where the laser beams emitted by laser emitter B irradiate on the laser induction plate at observation point B as the initial positions at the start of the observation.

[0024] Monitoring data analysis module: Compare the difference in the relative distances of the corresponding points of each laser emitter on the laser induction plate at several time points relative to the initial positions and the number of deviation times, determine whether the slope has deformed or whether the equipment has malfunctioned, and send a warning message.

[0025] As a preferred embodiment, in the step of determining whether the slope has deformed or whether the equipment has malfunctioned according to a predetermined monitoring strategy, the monitoring strategy is specifically as follows:

[0026] When the number of times the deviation value of the corresponding irradiation point of any laser emitter on observation points A and B from the initial position exceeds the specified requirement in a day is greater than the specified number of times, send a slope deformation risk warning.

[0027] When the laser injection situation of a certain detection point is not detected on observation points A and B, and neither of the two laser induction plates at A and B detects the observation point, directly determine that the position detected this time deviates from the initial position by more than the specified requirement and the deviation is large, and directly send a slope deformation risk warning.

[0028] Monitor the laser injected into any detection point on observation points A and B multiple times. When the observation deviations of more than half of the observation points A and B exceed the specified requirement, it is considered that there is a problem with the laser induction plate of one of the observation points or the laser emitter of the detection point, and send a malfunction warning.

[0029] As a preferred embodiment, all laser emitters emit laser beams in sequence from top to bottom and from left to right.

[0030] On the other hand, the present invention proposes an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements a slope stability monitoring method based on laser positioning according to any embodiment of the present invention.

[0031] On the other hand, the present invention proposes a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, it implements a slope stability monitoring method based on laser positioning according to any embodiment of the present invention.

[0032] The present invention has the following beneficial effects:

[0033] 1. The present invention provides a method and system for monitoring the stability of slopes based on laser positioning. Compared with the existing slope monitoring technologies using positioning systems and those using lidar scanning, the laser emitter has a lower cost than the positioning system and lidar. Moreover, two laser emitters are set at each monitoring base point and laser induction plates are set at two observation points at the bottom of the slope, which can improve the reliability of monitoring.

[0034] 2. The present invention provides a method and system for monitoring the stability of slopes based on laser positioning. There are two observation points at the bottom of the slope, and each observation point correspondingly receives the laser beam of the corresponding laser emitter. This method can avoid the coincidence of the laser beams emitted by the two laser emitters on the same plate or misjudging the corresponding points of the two laser beams, thus causing an error in the distance difference from the initial point.

[0035] 3. The present invention provides a method and system for monitoring the stability of slopes based on laser positioning. The laser beam of the laser emitter is sequentially irradiated onto the corresponding laser induction plate and compared with the initial position one by one, so that the corresponding error value of each monitoring base point can be obtained, ensuring the accuracy of monitoring and reducing the possibility of errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a flow chart of the present invention;

[0037] Figure 2 is a diagram of the detection point setting;

[0038] Figure 3 is a diagram of the observation point setting;

[0039] Figure 4 is a diagram of the laser and induction plate setting;

[0040] Figure 5 is a schematic diagram of the offset of the observation point caused by slope deformation. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] It should be understood that the step numbers used in the text are only for convenient description and do not limit the execution order of the steps.

[0043] It should be understood that the terms used in the specification of the present invention are merely for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0044] The terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their combinations.

[0045] The term "and / or" refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0046] Embodiment 1:

[0047] See Figure 1 , a slope stability monitoring method based on laser positioning, comprising the following specific steps:

[0048] A number of fixed bases are set at the detection points on the slope surface of the slope, and two laser emitters A and B separated by a fixed distance are included on the base;

[0049] Specifically, a base is set every 15 - 40 meters, and two laser emitters A and B are installed on each base. Laser emitter A is at the back and laser emitter B is in the front, and there is a certain distance between the two laser emitters. For details, see Figure 2 .

[0050] Observation points A and B are respectively set at the stable foundation at the bottom of the slope, and a laser induction plate is set on each of observation points A and B;

[0051] Specifically, the two observation points are respectively located at 1 / 4 and 3 / 4 of the slope length direction. For specific settings, refer to Figure 3 .

[0052] Record the positions where the laser beams emitted by all laser emitters A initially irradiate on the laser induction plate of observation point A and the positions where the laser beams emitted by laser emitter B irradiate on the laser induction plate of observation point B as the initial positions at the start of observation;

[0053] Specifically, see Figure 4, the detection points start from top to bottom and from left to right. For each detection point, the laser emitter A emits laser beams towards the induction plate at the observation point A in sequence, and the laser detection plate records the laser detection positions of each point as the initial value of point A; for each detection point, the laser emitter B emits laser beams towards the induction plate at the observation point B in sequence, and the laser detection plate records the laser detection positions of each point as the initial value of point B.

[0054] Compare the differences in the relative distances and the number of deviations of the corresponding points of each laser emitter on the laser induction plate at several time points relative to the initial positions, determine whether the slope has deformed or whether the equipment has malfunctioned, and issue a warning message.

[0055] During specific implementation, after setting the initial positions, enter the subsequent observation stage. Record the positions of the laser beams of each laser emitter on the corresponding laser induction plate every 6 hours and compare them with the initial positions.

[0056] As a preferred implementation manner of this embodiment, in the step of determining whether the slope has deformed or whether the equipment has malfunctioned according to the predetermined monitoring strategy, the monitoring strategy is specifically as follows:

[0057] When the number of times the deviation value of the corresponding irradiation point of any laser emitter on the observation points A and B from the initial position exceeds the specified requirements in a day is greater than the specified number of times, send a slope deformation risk warning.

[0058] When the laser injection situation of a certain detection point is not detected on the observation points A and B, and neither of the two laser induction plates at A and B detects the observation point, directly determine that the position detected this time deviates from the initial position by more than the specified requirements and the deviation is large, and directly send a slope deformation risk warning.

[0059] Monitor the laser injected into any detection point on the observation points A and B multiple times. When the observation deviations of more than half of the two observation points A and B exceed the specified requirements, it is considered that there is a problem with the laser induction plate of one of the observation points or the laser emitter of the detection point, and send a malfunction warning.

[0060] During specific implementation, record the positions of the laser beams of each laser emitter on the corresponding laser induction plate every 6 hours, so 4 detections are carried out every day. The specific monitoring strategy is as follows:

[0061] When the positions of the 4 laser detections of a certain detection point at any one of the observation points A and B in a day deviate from the initial value by more than the specified requirements for 3 times or more, send a slope deformation risk warning. The principle of slope deformation causing the deviation of the observation point is as Figure 5 shown.

[0062] When the observation deviations of the two observation points A and B exceed 5 mm in 5 out of 10 monitors at a certain detection point, it is considered that there is a problem with the induction plate of one of the observation points or the laser emitter of the detection point, and a fault warning is sent.

[0063] When the laser injection of a certain detection point is not detected on the observation points A and B, and neither of the two laser induction plates of A and B detects the observation point, it is directly determined that the deviation between the detected position and the initial position exceeds the specification requirements, and the deviation is large, and a slope deformation risk warning is directly sent.

[0064] As a preferred implementation mode of this embodiment, all laser emitters emit laser beams in sequence from top to bottom and from left to right.

[0065] During specific implementation, different delays can be used for the laser irradiators in sequence from left to right and from top to bottom, so that the laser irradiators can emit laser beams in a certain order, ensuring the reliability and accuracy of the results.

[0066] Embodiment 2:

[0067] The present invention provides a slope stability monitoring system based on laser positioning, including:

[0068] Monitoring equipment positioning module: A number of fixed bases are set at the detection points on the slope surface of the slope. The bases include two laser emitters A and B separated by a fixed distance. Observation points A and B are respectively set at the stable foundation at the bottom of the slope, and a laser induction plate is set on each of the observation points A and B;

[0069] Monitoring data recording module: Record the positions where the laser beams emitted by all the initial laser emitters A irradiate on the laser induction plate of the observation point A and the positions where the laser beams emitted by the laser emitter B irradiate on the laser induction plate of the observation point B as the initial positions at the start of the observation;

[0070] Monitoring data analysis module: Compare the difference in the relative distances of the corresponding points of each laser emitter on the laser induction plate at several time points relative to the initial position and the number of deviation times, determine whether the slope deforms or the equipment fails, and send a warning message.

[0071] As a preferred implementation mode of this embodiment, all the laser beams of the laser emitters A only irradiate on the laser induction plate of the observation point A, and all the laser beams of the laser emitters B only irradiate on the laser induction plate of the observation point B.

[0072] As a preferred implementation mode of this embodiment, all laser emitters emit laser beams in sequence from top to bottom and from left to right.

[0073] Embodiment 3:

[0074] An electronic device in this embodiment includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements a slope stability monitoring method based on laser positioning according to any embodiment of the present invention.

[0075] Embodiment 4:

[0076] A computer-readable storage medium stores a computer program, which when executed by a processor implements a slope stability monitoring method based on laser positioning according to any embodiment of the present invention.

[0077] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall equally be included in the patent protection scope of the present invention.

Claims

1. A slope stability monitoring method based on laser positioning, characterized in that, It includes the following specific steps: Set a number of fixed bases at the detection points on the slope surface of the slope. There are two laser transmitters A and B on the base that are separated by a fixed distance; Set observation point A and observation point B at intervals at the stable foundation at the bottom of the slope. Set a laser induction plate on each of observation point A and observation point B; Let each laser transmitter A emit laser light to the laser induction plate of observation point A in turn, and record the initial position where the laser beam emitted by each laser transmitter A shines on the laser induction plate of observation point A; Let each laser transmitter B emit laser light to the laser induction plate of observation point B in turn, and record the initial position where the laser beam emitted by each laser transmitter B shines on the laser induction plate of observation point B; Compare the difference in the relative distances of the corresponding points of each laser transmitter on the laser induction plate relative to the initial position at several time points and the number of deviation times, and judge whether the slope deforms or the equipment fails according to the predetermined monitoring strategy, and issue a warning message; Among them, the monitoring strategy is specifically: When the number of times that the deviation value of the corresponding irradiation point of any laser transmitter on observation points A and B from the initial position exceeds the specified requirement in a day is greater than the specified number of times, send a slope deformation risk warning; When the laser injection situation of a certain detection point is not detected on observation points A and B, and neither of the two laser induction plates of A and B detects the observation point, directly determine that the deviation of the detected position from the initial position exceeds the specified requirement, and the deviation is large and directly send a slope deformation risk warning; Monitor the laser injected into any detection point on observation points A and B multiple times. When the number of deviation times of more than half of the two observation points A and B exceeds the specified requirement, it is considered that there is a problem with the laser induction plate of one of the observation points or the laser transmitter of the detection point, and send a fault warning.

2. The slope stability monitoring method based on laser positioning according to claim 1, characterized in that, All laser transmitters emit laser light in turn in the order from top to bottom and from left to right.

3. A slope stability monitoring system based on laser positioning, characterized in that, It includes: Monitoring equipment positioning module: Set a number of fixed bases at the detection points on the slope surface of the slope. There are two laser transmitters A and B on the base that are separated by a fixed distance. Set observation point A and observation point B respectively at the stable foundation at the bottom of the slope. Set a laser induction plate on each of observation point A and observation point B; Monitoring data recording module: Record the positions where the laser beams emitted by all the initial laser transmitters A shine on the laser induction plate of observation point A and the positions where the laser beams emitted by laser transmitter B shine on the laser induction plate of observation point B as the initial positions at the start of observation; Monitoring data analysis module: Compare the difference in the relative distances of the corresponding points of each laser transmitter on the laser induction plate relative to the initial position at several time points, judge whether the slope deforms or the equipment fails, and issue a warning message; Among them, the monitoring strategy is specifically: When the number of times that the deviation value of the corresponding irradiation point of any laser transmitter on observation points A and B from the initial position exceeds the specified requirement in a day is greater than the specified number of times, send a slope deformation risk warning; When the laser injection situation of a certain detection point is not detected at the observation points A and B, and neither of the two laser induction plates at A and B detects the observation point, it is directly determined that the position detected this time deviates from the initial position beyond the specification requirements, and the deviation is large, and a slope deformation risk warning is directly sent. When the laser injected into any detection point on the observation points A and B is monitored multiple times, and the deviation times of more than half of the two observation points A and B exceed the specification requirements, it is considered that there is a problem with the laser induction plate of one of the observation points or the laser emitter of the detection point, and a fault warning is sent.

4. A slope stability monitoring system based on laser positioning according to claim 3, characterized in that, All laser emitters emit laser beams in sequence from top to bottom and from left to right.

5. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, it implements a slope stability monitoring method based on laser positioning as described in any one of claims 1 to 2.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements a slope stability monitoring method based on laser positioning as described in any one of claims 1 to 2.

Images