Combined monitoring method for water and soil loss and landslide

Abstract

The invention discloses a combined monitoring method for water and soil loss and landslide. The combined monitoring method comprises the following steps: determining a slip crack surface of a side slope; determining whether a water insulation boundary layer exists in the sliding body or not; the slope water and soil loss and landslide combined monitoring comprises unmanned aerial vehicle terrain monitoring, surface water flow and silt content monitoring, potential slip crack surface displacement and silt content monitoring and slope slip mass displacement and inclination angle monitoring. The beneficial effects of the invention are that the combined monitoring is designed based on the complexity and relevance of disasters, the promotion of scientific research and technical development, the demands of engineering practice, the demands of disaster prevention and control and public safety, and other factors. The data obtained by systematic joint monitoring is not only a supplement for theoretical research of slope instability and laboratory investigation, but also can provide the most real information about slope instability behaviors and environmental laws, a feasible scheme is provided for internal relation exploration of the slope instability behaviors and the environmental laws, and the method has practical significance.

Description

Technical Field

[0001] The present application belongs to the technical field of geological disaster monitoring, and specifically relates to a combined monitoring method for soil erosion and landslide. Background Art

[0002] During the construction process, the stability of the slope is one of the key factors to ensure the safety of the project. Recent studies have found that soil erosion and landslides are often not isolated geological phenomena. There is a close correlation and mutual influence between them. Soil erosion may weaken the stability of the slope and create conditions for the occurrence of landslides; while landslides may aggravate soil erosion, forming a vicious cycle.

[0003] Therefore, joint monitoring of these two disasters can provide a more comprehensive understanding of the geological changes of the slopes, provide more accurate information for disaster warning and prevention, and conduct joint monitoring of soil erosion and landslides on the slopes, which can timely detect changes in slope stability and provide important reference for engineering design and construction. In addition, during the slope management process, the joint monitoring results can also provide data support for the formulation and optimization of management plans and improve management effects.

[0004] However, at present, soil and water conservation and disaster prevention and control belong to different management units, and there are few joint monitoring projects. As a result, the existing joint monitoring methods are ineffective. It is difficult to unify the two to form a systematic and effective monitoring method. They are still in a state of fighting alone and cannot provide accurate assessments for the prediction of slope geological disasters. Summary of the invention

[0005] The purpose of this application is to provide a simple, efficient and accurate joint monitoring method for soil erosion and landslides. This monitoring method helps to have a more comprehensive understanding of the stability of the slope, improve the level of early warning and management, and provide a strong guarantee for building a safe and stable environment.

[0006] The purpose of this application is achieved through the following technical solutions:

[0007] A joint monitoring method for soil erosion and landslides comprises the following steps: determining a slope sliding surface; determining whether there is a water-isolating boundary layer in a sliding body; and joint monitoring of slope soil erosion and landslides, including drone terrain monitoring, surface water flow and mud content monitoring, potential sliding surface drainage and mud content monitoring, and slope sliding body displacement and inclination monitoring.

[0008] Furthermore, determine the slope slip surface: conduct geological surveys on the slopes that need to be monitored, observe and analyze the slope bedrock, rock and soil structure or tectonic surface using surface observations, drilling or physical exploration, and determine the potential slip surface of the slope with the help of finite element software.

[0009] Furthermore, determine whether there is a water-proof boundary layer in the sliding body: conduct drilling exploration along the potential sliding body of the slope, conduct test analysis on the rock and soil samples taken from the boreholes at various locations, and determine whether there is a water-proof position in the potential slope sliding body and locate the interface of the water-proof layer through particle analysis test or permeability test.

[0010] Furthermore, drone terrain monitoring: clarify the scope of the slope area that needs three-dimensional modeling, plan the flight path according to the characteristics of the area, set ground control points, determine the time interval, and conduct regular flight inspections and photography; generate a three-dimensional model, regularly compare model changes, monitor slope terrain changes, and use it to analyze the overall deformation of the slope and soil erosion.

[0011] Furthermore, the three-dimensional reconstruction algorithm is a structured light method or a multi-view stereo vision method.

[0012] Furthermore, surface water flow and mud content monitoring: monitoring points are arranged in the multi-level intercepting and drainage ditches on the slope to monitor the water flow and mud content of the water flow, which is used to analyze the surface soil and water loss situation.

[0013] Furthermore, the drainage and mud content of the potential sliding surface are monitored: when there is no impermeable layer in the potential sliding body of the slope, drainage pipes are driven into the top and bottom of the slope sliding body to the potential sliding surface to monitor the drainage and mud content of the potential sliding surface at the top and bottom of the slope.

[0014] Furthermore, if the slope height is too large, a drainage pipe is added in the middle of the slope.

[0015] Furthermore, the drainage and mud content of the potential sliding surface are monitored: when there is an impermeable layer in the potential sliding body of the slope, a drainage pipe is driven into the interface between the top of the slope sliding body and the impermeable layer to the potential sliding surface to monitor the drainage and mud content at the interface between the top of the slope and the impermeable layer.

[0016] Furthermore, the displacement and inclination of the slope sliding body are monitored: displacement and inclination monitoring points are arranged at the top and bottom of the slope sliding body to provide data for landslide early warning.

[0017] Beneficial effects of this application:

[0018] (1) This joint monitoring is designed based on multiple factors, including the complexity and relevance of disasters, the promotion of scientific research and technological development, the needs of engineering practice, and the needs of disaster prevention and public safety. The data obtained from this systematic joint monitoring not only supplements the theoretical research and laboratory investigation of slope instability, but also provides the most realistic information on the behavior of slope instability and environmental laws, and provides a feasible solution for exploring the internal connection between the two, which is of practical significance.

[0019] (2) With the continuous development of monitoring technology, joint monitoring will promote the innovation and improvement of slope stability assessment methods and provide more advanced technical support for slope management.

[0020] (3) Geological disasters such as landslides caused by slope instability often cause huge losses to industrial and agricultural production and people’s lives and property. Joint monitoring helps to timely discover and deal with hidden dangers, reduce the possibility of disasters, and thus reduce economic losses.

[0021] (4) Geological disasters such as landslides pose a serious threat to residential areas, transportation routes and other infrastructure. Joint monitoring can improve the level of monitoring of slope stability and provide strong protection for public safety.

[0022] The aforementioned main scheme of the present application and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection in the present application; and in the present application, (non-conflicting options) can also be freely combined with each other and with other options. After understanding the scheme of the present application, those skilled in the art can understand that there are many combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present application, and they are not exhaustively listed here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the combined monitoring of soil erosion and landslide on a slope without an aquiclude in the present application.

[0024] Figure 2 It is a schematic diagram of the combined monitoring of soil erosion and landslide on a slope with an impermeable layer in the present application.

[0025] In the figure: 1-slope sliding body, 2-potential sliding surface of the slope, 3-drainage and mud content monitoring point on the top of the sliding surface, 4-drainage and mud content monitoring point on the bottom of the sliding surface, 5-inclination and displacement monitoring point on the top of the sliding body, 6-inclination and displacement monitoring point on the bottom of the sliding body, 7-intercepting ditch, 8-cement and sand content monitoring point, 9-UAV terrain monitoring, 10-interface of the aquicluder in the sliding body, 11-drainage and mud content monitoring point on the sliding surface of the aquicluder. DETAILED DESCRIPTION

[0026] The following non-limiting examples are provided to illustrate the present application.

[0027] Example 1

[0028] refer to Figure 1 and Figure 2 As shown, a joint monitoring method for soil erosion and landslide includes the following steps.

[0029] Determine the slope slip surface: First, conduct geological surveys on the slopes that need to be monitored, and use surface observations, drilling and physical exploration to observe and analyze the slope bedrock, rock and soil structure and tectonic surface in detail. With the help of finite element software, determine the potential slip surface of the slope2 and ensure the accuracy of the location of the potential slip surface of the slope. This is the basis for joint monitoring.

[0030] Determine whether there is a water-proof boundary layer in the sliding body: conduct drilling exploration along the slope sliding body 1 (potential), conduct test analysis on the rock and soil samples drilled at various locations, and determine whether there is an obvious water-proof position in the potential slope sliding body 1 through particle analysis test and permeability test, and accurately locate the interface 10 of the water-proof layer in the sliding body.

[0031] Joint monitoring of slope soil erosion and landslides includes the following.

[0032] UAV terrain monitoring 9: Clearly define the slope area that needs to be 3D modeled, plan the flight path according to the characteristics of the area, set ground control points, determine the appropriate time interval, and regularly fly patrol photography. Use 3D reconstruction algorithms (such as structured light or multi-view stereo vision) to reconstruct 2D images and generate preliminary 3D models. Clean, optimize, and texture map the generated 3D models to generate high-precision 3D models. Regularly compare model changes and monitor slope terrain changes to analyze overall slope deformation and soil erosion.

[0033] Monitoring of surface water flow and mud content: rationally arrange cement and sand content monitoring points 8 in the multi-level intercepting ditches 7 and drainage ditches on the slope to monitor water flow and mud content in the water flow for analyzing surface water and soil erosion.

[0034] Monitoring of drainage and mud content on potential sliding surfaces: The potential sliding surface of a slope is the interface where the rock and soil inside the slope may slide. When the drainage on the sliding surface increases and the mud content in the water flow increases significantly, it indicates that a landslide is about to occur.

[0035] When there is no impermeable layer in the potential sliding body of the slope, drainage pipes are driven into the top and bottom of the slope sliding body to the potential sliding surface. If the slope height is too large, additional drainage pipes are driven into the middle of the slope. Drainage and mud content monitoring point 3 at the top of the sliding surface and drainage and mud content monitoring point 4 at the bottom of the sliding surface are arranged to monitor the drainage and mud content at the potential sliding surface positions at the top and bottom of the slope.

[0036] In the case where there is an impermeable layer in the potential sliding body of the slope, a drainage pipe is driven into the interface between the top of the slope sliding body and the impermeable layer to the potential sliding surface. A drainage and mud content monitoring point 3 at the top of the sliding surface and a drainage and mud content monitoring point 11 on the sliding surface of the impermeable layer are arranged to monitor the drainage and mud content at the interface between the top of the slope and the impermeable layer.

[0037] Slope sliding displacement and inclination monitoring: When a slope landslide occurs, the first and most obvious change is at the top or bottom of the sliding body. Therefore, a certain number of sliding body top inclination and displacement monitoring points 5 and sliding body bottom inclination and displacement monitoring points 6 are arranged within the top and bottom range of the slope sliding body. In particular, the inclination monitoring points can more sensitively monitor more subtle changes in the slope sliding body than traditional displacement change monitoring, providing data for landslide early warning.

[0038] The aforementioned basic examples and their further selected examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed for protection in this application. In the scheme of this application, each selected example can be arbitrarily combined with any other basic examples and selected examples.

[0039] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A joint monitoring method for soil erosion and landslide, characterized in that: The steps include: Determine the slope slip surface; Determine whether there is a water-isolating boundary layer within the sliding body; Combined monitoring of slope soil erosion and landslides, including drone terrain monitoring, surface water flow and mud content monitoring, potential sliding surface drainage and mud content monitoring, and slope sliding body displacement and inclination monitoring.

2. The combined monitoring method for soil erosion and landslide according to claim 1, characterized in that: Determine the slope slip surface: Conduct geological surveys on the slopes that need to be monitored, observe and analyze the slope bedrock, rock and soil structure or tectonic surface using surface observation, drilling or physical exploration, and determine the potential slip surface of the slope with the help of finite element software.

3. The combined monitoring method for soil erosion and landslide according to claim 1, characterized in that: Determine whether there is a water-proof boundary layer in the sliding body: Conduct drilling exploration along the potential sliding body of the slope, conduct test analysis on the rock and soil samples drilled at various locations, and determine whether there is a water-proof position in the potential slope sliding body and locate the interface of the water-proof layer through particle analysis test or permeability test.

4. The combined monitoring method for soil erosion and landslide according to claim 1, characterized in that: UAV terrain monitoring: clarify the scope of the slope area that needs 3D modeling, plan the flight path according to the characteristics of the area, set ground control points, determine the time interval, and conduct regular flight inspections and photography; Generate a three-dimensional model, regularly compare model changes, monitor slope topography changes, and use it to analyze overall slope deformation and soil erosion.

5. The combined monitoring method for soil erosion and landslide according to claim 4, characterized in that: The 3D reconstruction algorithm is structured light method or multi-view stereo vision method.

6. The combined monitoring method for soil erosion and landslide according to claim 1, characterized in that: Monitoring of surface water flow and mud content: Monitoring points are arranged in the multi-level intercepting and drainage ditches on the slope to monitor the water flow and mud content of the water flow for analyzing surface soil and water loss.

7. The combined monitoring method for soil erosion and landslide according to claim 1, characterized in that: Monitoring of drainage and mud content on potential sliding surfaces: When there is no impermeable layer in the potential sliding body of the slope, drainage pipes are driven into the top and bottom of the slope sliding body to the potential sliding surface to monitor the drainage and mud content at the top and bottom of the potential sliding surface.

8. The combined monitoring method for soil erosion and landslide according to claim 7, characterized in that: If the slope height is too large, add a drainage pipe in the middle of the slope.

9. The combined monitoring method for soil erosion and landslide according to claim 1 or 7, characterized in that: Monitoring of drainage and mud content on potential sliding surface: When there is an impermeable layer in the potential sliding body of the slope, a drainage pipe is driven into the interface between the top of the slope sliding body and the impermeable layer to the potential sliding surface to monitor the drainage and mud content at the interface between the top of the slope and the impermeable layer.

10. The combined monitoring method for soil erosion and landslide according to claim 1, characterized in that: Slope sliding body displacement and inclination monitoring: Displacement and inclination monitoring points are arranged at the top and bottom of the slope sliding body to provide data for landslide early warning.

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