Slope rolling stone disaster monitoring and alarming device

Abstract

The invention discloses a slope rolling stone disaster monitoring and alarming device in the technical field of slope prevention and control. The slope rolling stone disaster monitoring and alarming device comprises a multi-point displacement meter, an osmometer; an inclinometer; a soil pressure acquisition instrument; the solar panel is used for providing continuous power supply for the whole device; the camera is used for capturing the running state of the side slope rolling stone and recording the side slope state; the host is used for receiving and processing various detection data and carrying out real-time monitoring and alarming; the host can determine the trace length, tendency, dip angle and density statistical characteristics of the slope crack according to the received detection data, and determine the slope crack shear strength by combining the crack shear strength mechanical parameters determined by the laboratory physical test and the slope surrounding rock quality grade and physical mechanical parameters determined by the engineering geological survey and the physical test. A two-dimensional numerical model for simulating rolling stone cutting crack slope rock mass is established by using rolling stone operation state parameters shot by a camera. The method is scientific and reasonable, and the calculation efficiency is improved by establishing a unified calculation model.

Description

Technical Field

[0001] The invention belongs to the technical field of slope prevention and control, and in particular is a slope rock rolling disaster monitoring and alarm device. Background Art

[0002] Rockfall disasters are a common natural disaster in mountainous areas, posing a serious threat to people's lives and property. In order to effectively monitor and warn of such disasters, researchers and technicians continue to explore and develop advanced monitoring and alarm devices. These devices usually combine a variety of sensor technologies, data processing technologies, and communication technologies to achieve real-time monitoring and early warning of slope stability.

[0003] The core of the monitoring and alarm device for rockfall disasters on slopes is to accurately and timely capture the dynamic information of rockfall on slopes, including the location, speed, direction of the rockfall, and the possible impact on the surrounding areas. In order to achieve this goal, the device is usually equipped with high-precision sensors, such as multi-point displacement meters, piezometers, inclinometers, earth pressure collectors, solar panels, and cameras, etc., to capture the tiny dynamic changes of rockfall on slopes. At the same time, the device is also equipped with a powerful data processing system that can process and analyze the data collected by the sensors in real time, so as to accurately judge the stability state of the slope. In addition, the monitoring and alarm device for rockfall disasters on slopes usually has a remote communication function, which can transmit real-time monitoring data and warning information to the remote monitoring center or relevant departments so as to take timely countermeasures. Although the monitoring and alarm device for rockfall disasters on slopes has made certain technical progress, there are still some problems in practical applications: with the continuous increase of monitoring data, the burden on the data processing system is also increasing. How to improve the efficiency and accuracy of the data processing system is an important issue currently faced.

[0004] In summary, the data processing capability of the traditional slope rockfall disaster monitoring and alarm device needs to be improved, which has become an urgent problem to be solved by technicians in this field. Therefore, it is necessary to propose a slope rockfall disaster monitoring and alarm device. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a slope rockfall disaster monitoring and alarm device, which can realize the automatic transformation of the slope crack rock matrix material from a continuous medium state to a discontinuous medium state by constructing a specific fracture sequence, and can realize the simultaneous simulation of the mechanical behavior of continuous sub-areas and discontinuous structural surfaces by establishing a unified calculation model.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a slope rolling stone disaster monitoring and alarm device, including a plurality of detection components, which are installed on the slope in sequence from high to low along the slope height, and the detection components include a multi-point displacement meter, a piezometer, an inclinometer, an earth pressure collector, a solar panel, a camera and a host.

[0007] Multi-point displacement meter is used to monitor the displacement changes at different positions of the slope.

[0008] Piezometers are used to measure groundwater pressure in and around slopes.

[0009] Inclinometers are used to monitor the inclination angle of a slope.

[0010] Earth pressure collector is used to measure the pressure on slope soil.

[0011] Solar panels are used to provide a continuous supply of electricity to the entire installation.

[0012] The camera is used to capture the running status of the slope rolling stones and record the slope status.

[0013] The host is used to receive and process various detection data for real-time monitoring and alarm.

[0014] Multi-point displacement meters, piezometers, inclinometers, earth pressure collectors, solar panels and cameras are all connected to the host signal; the host can determine the trace length, inclination, dip angle and density statistical characteristics of slope cracks based on the detection data received by the multi-point displacement meters, piezometers, inclinometers and earth pressure collectors, and combine the shear mechanical parameters of the cracks determined by laboratory physical tests, as well as the quality grade and physical and mechanical parameters of the slope surrounding rock determined by engineering geological surveys and physical experiments, and use the stone rolling running state parameters captured by the camera to establish a two-dimensional numerical model of the slope rock mass simulating stone rolling cutting cracks.

[0015] Furthermore, the 2D numerical model can analyze the stress-strain distribution in the rock mass based on continuum mechanics.

[0016] Furthermore, the two-dimensional numerical model can determine whether the edge of a unit in the numerical model meets the failure condition based on the dynamic Mohr-Coulomb criterion. If so, this edge is set as a crack in the model to simulate the initiation and propagation of the crack.

[0017] Furthermore, the 2D numerical model can simulate the locking, friction-slip and micro-embedding mechanical behaviors occurring at existing or newly formed cracks based on contact mechanics.

[0018] Furthermore, the two-dimensional numerical model can continuously increase the simulated stone rolling action time or action depth to simulate the continuous working state of the stone rolling under real conditions, and judge in real time in each calculation step whether there are new unit edges that further reach the destruction state. If so, all unit edges that reach the destruction state are set as cracks to simulate the mutual penetration and influence of multiple cracks.

[0019] Furthermore, the 2D numerical model can analyze and calculate the obtained data at the end of the simulation, including the rock stress field, strain field, crack morphology and distribution characteristics, rockfall embedding depth, and rock breaking ratio.

[0020] Furthermore, the host also includes an alarm module, which is used to dynamically evaluate the stability of the slope based on the simulation results of the two-dimensional numerical model in combination with real-time monitoring data, and automatically trigger the alarm mechanism when potential disaster risks are detected to notify relevant personnel to take countermeasures.

[0021] Furthermore, the host also includes a communication module for receiving monitoring data and simulation results in real time.

[0022] Furthermore, the host also includes a data storage module for storing real-time monitoring data, simulation results and alarm records.

[0023] Furthermore, multi-point displacement meters, piezometers, inclinometers, earth pressure collectors, solar panels and cameras all adopt a modular design.

[0024] The following principles and beneficial effects are achieved by adopting the above scheme: 1. The machine of the present invention uses the received monitoring data and the parameters of the rolling stone operation state captured by the camera, combined with the results of laboratory physical tests and engineering geological surveys, to establish a high-precision two-dimensional numerical model. The two-dimensional numerical model can simulate the process of rolling stones cutting cracked slope rock mass, including complex behaviors such as crack initiation, expansion and penetration.

[0025] 2. The present invention adopts a method combining continuous and non-continuous medium mechanics. In the two-dimensional numerical model, continuous medium mechanics is used to simulate the rock deformation at the non-fractured part, while contact mechanics is used for fine calculation at the crack. This method not only ensures the calculation accuracy, but also reduces the calculation cost and improves the calculation efficiency.

[0026] 3. The present invention uses multiple sensors such as multi-point displacement meters, piezometers, inclinometers, and soil pressure collectors to capture small dynamic changes of the slope in real time, including key parameters such as displacement, groundwater pressure, inclination angle, and soil pressure. These data are integrated into the data processing system of the host to form a comprehensive slope status monitoring.

[0027] 4. The alarm module in the present invention dynamically evaluates the stability of the slope based on the simulation results of the two-dimensional numerical model and the real-time monitoring data. Once a potential disaster risk is detected, the alarm mechanism is immediately triggered to promptly notify relevant personnel to take countermeasures. Through real-time monitoring and early warning mechanisms, the present invention can promptly detect and respond to slope rockfall disasters, reducing the threat of disasters to people's lives and property. At the same time, the remote communication function enables monitoring data and early warning information to be quickly transmitted to relevant departments, enhancing emergency response capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of an embodiment of the present invention.

[0029] Figure 2 Flow chart of a two-dimensional numerical model in an embodiment of the present invention.

[0030] Figure 3 Schematic diagram of crack initiation and propagation process in a two-dimensional numerical model of an embodiment of the present invention.

[0031] Figure 4 Schematic diagram of a numerical model of rock breaking with different single fractures and double fractures according to an embodiment of the present invention.

[0032] Figure 5 It is a simulation diagram of the rock-breaking effect of rock masses containing different single fractures in an embodiment of the present invention.

[0033] Figure 6 This is a simulation diagram of the rock-breaking effect of rock masses containing different double fractures in an embodiment of the present invention.

[0034] The figure marks in the drawings of the specification include: 1. multi-point displacement meter; 2. piezometer; 3. inclinometer; 4. soil pressure collector; 5. solar panel; 6. camera; 7. host. DETAILED DESCRIPTION

[0035] The following is further described in detail through specific implementation methods: The embodiment is basically as shown in the attached Figure 1-Figure 6As shown: a slope rockfall disaster monitoring and alarm device, including a plurality of detection components, which are installed on the slope in order from high to low along the slope height, and the detection components include a multi-point displacement meter 1, which is used to monitor the displacement changes of different positions of the slope; a piezometer 2, which is used to measure the groundwater pressure inside and around the slope; an inclinometer 3, which is used to monitor the inclination angle of the slope; an earth pressure collector 4, which is used to measure the pressure on the slope soil; a solar panel 5, which is used to provide continuous power supply for the entire device; a camera 6, which is used to capture the running status of the slope rockfall and record the slope status; a host 7, which is used to receive and process various detection data for real-time monitoring and alarm. The multi-point displacement meter 1, the piezometer 2, the inclinometer 3, the earth pressure collector 4, the solar panel 5 and the camera 6 are all connected to the host 7 by signal.

[0036] The host 7 also includes an alarm module, which is used to dynamically evaluate the stability of the slope based on the simulation results of the two-dimensional numerical model and the real-time monitoring data, and automatically trigger the alarm mechanism when a potential disaster risk is detected to notify relevant personnel to take countermeasures. The host 7 also includes a communication module, which is used to receive monitoring data and simulation results in real time. The host 7 also includes a data storage module for storing real-time monitoring data, simulation results and alarm records. The multi-point displacement meter 1, the piezometer 2, the inclinometer 3, the earth pressure collector 4, the solar panel 5 and the camera 6 are all modularly designed.

[0037] The host computer 7 can determine the trace length, inclination, dip angle and density statistical characteristics of the slope cracks based on the detection data received by the multi-point displacement meter 1, the piezometer 2, the inclinometer 3 and the earth pressure acquisition instrument 4, and combine the shear mechanical parameters of the cracks determined by laboratory physical tests, as well as the quality grade and physical and mechanical parameters of the slope surrounding rock determined by engineering geological surveys and physical experiments, and use the rolling stone running state parameters captured by the camera 6 to establish a two-dimensional numerical model of the slope rock mass simulating the rolling stone cutting cracks.

[0038] The two-dimensional numerical model can analyze the stress and strain distribution in the rock mass based on the mechanics of continuous media. The two-dimensional numerical model can determine whether the edge of a unit in the numerical model meets the failure condition based on the dynamic Mohr-Coulomb criterion. If so, this edge is set as a crack in the model to simulate the initiation and propagation of the crack. The two-dimensional numerical model can simulate the locking, friction slip and micro-embedding mechanical behaviors generated at existing or newly formed cracks based on contact mechanics.

[0039] The two-dimensional numerical model can continuously increase the simulated rolling stone action time or depth to simulate the continuous working state of the rolling stone in real situations, and judge in real time whether there are new unit edges that further reach the destruction state in each calculation step. If so, all unit edges that reach the destruction state are set as cracks to simulate the mutual penetration and influence of multiple cracks. At the end of the simulation, the two-dimensional numerical model can analyze and calculate the obtained data, including rock mass stress field, strain field, crack morphology and distribution characteristics, rolling stone embedding depth and rock breaking ratio.

[0040] Specific implementation process: Install sensors such as multi-point displacement meter 1, piezometer 2, inclinometer 3, soil pressure collector 4 at different positions of the slope to ensure that the key parameters such as slope displacement, groundwater pressure, inclination angle and soil pressure can be fully monitored. Install the camera 6 at a suitable position to capture the running status of the slope rolling stone and record the slope status. Install solar panels 5 to provide continuous power supply for the entire device. Set relevant parameters in the host 7, such as monitoring range, alarm threshold, etc., to ensure that the device can accurately monitor and warn of rolling stone disasters.

[0041] The sensor starts to collect various parameter data of the slope, such as displacement, groundwater pressure, inclination angle, soil pressure, etc. The camera 6 starts to capture the running state of the slope rolling stone and record the slope state to generate video data.

[0042] The host computer 7 receives and processes various detection data, including sensor data and camera 6 data. The host computer 7 uses a two-dimensional numerical model to simulate and analyze the received data to evaluate the stability of the slope. The host computer 7 determines the trace length, inclination, dip angle and density statistical characteristics of the slope cracks based on the received detection data. Combined with the crack shear mechanical parameters determined by laboratory physical tests, and the slope surrounding rock quality grade and physical and mechanical parameters determined by engineering geological surveys and physical experiments, a two-dimensional numerical model simulating the rock mass of the slope with cracks cut by rolling stones is established.

[0043] The two-dimensional numerical model analyzes the stress and strain distribution in the rock mass based on continuous medium mechanics. The dynamic Mohr-Coulomb criterion is used to determine whether the edge of a unit in the numerical model meets the failure condition. If so, this edge is set as a crack in the model to simulate the initiation and expansion of cracks. The mechanical behaviors such as locking, friction slip, and micro-embedding generated at existing or newly formed cracks are simulated based on contact mechanics. The action time or depth of the simulated rolling stone is continuously increased to simulate the continuous working state of the rolling stone in real situations. As shown in the attached figure, Figure 3 As shown, the crack initiation and expansion process in the rock mass is simulated. In the figure, the triangle is the calculation unit, N represents the unit node, the number represents the node number, and ' represents the number of the new node generated by the appearance of the new crack.

[0044] In each calculation step, it is determined in real time whether there are new unit edges that have further reached the failure state. If so, all unit edges that have reached the failure state are set as cracks to simulate the mutual penetration and influence of multiple cracks. At the end of the simulation, the data obtained by analysis and calculation, including rock mass stress field, strain field, crack morphology and distribution characteristics, rolling stone embedding depth and rock breaking ratio, are used to evaluate the stability of the slope. Figure 4-Figure 5 As shown, Figure 4 The unit is millimeter. Figure 5 and Figure 6 The t in the middle represents the time of stone rolling.

[0045] When the simulation results of the two-dimensional numerical model or the real-time monitoring data indicate that there is a potential disaster risk on the slope, the host 7 automatically triggers the alarm mechanism. The alarm module issues an alarm to notify relevant personnel to take countermeasures. Relevant personnel take corresponding measures in a timely manner according to the alarm, such as evacuating personnel, setting up warning signs, strengthening slope support, etc., to reduce the risk of disasters. The data storage module stores real-time monitoring data, simulation results and alarm records for subsequent analysis and query. The communication module transmits the real-time received monitoring data and simulation results to relevant departments or personnel to achieve information sharing and collaborative response.

[0046] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A slope rockfall disaster monitoring and alarm device, characterized in that: The invention comprises a plurality of detection components, which are installed on the slope in order from high to low along the slope height, and each detection component comprises a multi-point displacement meter (1), a piezometer (2), an inclinometer (3), an earth pressure collector (4), a solar panel (5), a camera (6) and a host (7); A multi-point displacement meter (1) is used to monitor the displacement changes at different positions of the slope; Piezometers (2) for measuring groundwater pressure in and around the slope; Inclinometer (3), used to monitor the inclination angle of the slope; The soil pressure collector (4) is used to measure the pressure on the slope soil; Solar panels (5) for providing a continuous supply of electricity to the entire device; A camera (6) is used to capture the running state of the rolling stones on the slope and record the state of the slope; A host (7) is used to receive and process various detection data, and to perform real-time monitoring and alarm; The multi-point displacement meter (1), the piezometer (2), the inclinometer (3), the earth pressure acquisition instrument (4), the solar panel (5) and the camera (6) are all connected to the host computer (7) by signal; the host computer (7) can determine the trace length, inclination, dip angle and density statistical characteristics of the slope cracks based on the detection data received by the multi-point displacement meter (1), the piezometer (2), the inclinometer (3) and the earth pressure acquisition instrument (4), and can establish a two-dimensional numerical model of the rock mass of the slope rock mass simulating the rolling stone cutting the cracks by combining the shear mechanical parameters of the cracks determined by the laboratory physical test and the quality grade and physical mechanical parameters of the surrounding rock of the slope determined by the engineering geological survey and the physical experiment, using the running state parameters of the rolling stone captured by the camera (6).

2. The slope rock rolling disaster monitoring and alarm device according to claim 1 is characterized in that: The two-dimensional numerical model can analyze the stress-strain distribution in the rock mass based on continuum mechanics.

3. The slope rock rolling disaster monitoring and alarm device according to claim 2 is characterized in that: The two-dimensional numerical model can determine whether the edge of a unit in the numerical model meets the failure condition based on the dynamic Mohr-Coulomb criterion. If so, this edge is set as a crack in the model to simulate the initiation and propagation of the crack.

4. The slope rock rolling disaster monitoring and alarm device according to claim 3 is characterized in that: The two-dimensional numerical model can simulate the locking, friction-slip and micro-embedding mechanical behaviors occurring at existing or newly formed cracks based on contact mechanics.

5. The slope rock rolling disaster monitoring and alarm device according to claim 4 is characterized in that: The two-dimensional numerical model can continuously increase the simulated rolling stone action time or depth to simulate the continuous working state of the rolling stone in real situations, and judge in real time in each calculation step whether there are new unit edges that further reach the destruction state. If so, all unit edges that reach the destruction state are set as cracks to simulate the mutual penetration and influence of multiple cracks.

6. The slope rock rolling disaster monitoring and alarm device according to claim 5 is characterized in that: At the end of the simulation, the two-dimensional numerical model can analyze and calculate the obtained data, including rock mass stress field, strain field, crack morphology and distribution characteristics, rockfall embedding depth and rock breaking ratio.

7. The slope rock rolling disaster monitoring and alarm device according to claim 6 is characterized in that: The host (7) also includes an alarm module, which is used to dynamically evaluate the stability of the slope based on the simulation results of the two-dimensional numerical model in combination with real-time monitoring data, and automatically trigger an alarm mechanism when a potential disaster risk is detected to notify relevant personnel to take countermeasures.

8. The slope rock rolling disaster monitoring and alarm device according to claim 7 is characterized in that: The host (7) also includes a communication module, which is used to receive monitoring data and simulation results in real time.

9. The slope rock rolling disaster monitoring and alarm device according to claim 8, characterized in that: The host (7) also includes a data storage module for storing real-time monitoring data, simulation results and alarm records.

10. The slope rock rolling disaster monitoring and alarm device according to claim 9, characterized in that: The multi-point displacement meter (1), the piezometer (2), the inclinometer (3), the soil pressure collector (4), the solar panel (5) and the camera (6) all adopt a detachable connection modular design.

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