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A slope stability discrimination method based on a surface water and underground water coupling model

A technology of coupling model and discriminant method, applied in special data processing applications, material inspection products, instruments, etc., can solve problems such as the inability to monitor the change process of slope stability in real time, and the inability to accurately predict landslide disasters.

Active Publication Date: 2019-05-28
HOHAI UNIV
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Problems solved by technology

Another statistical method is to collect and sort out the landslide phenomenon under the action of relevant factors, analyze the correlation between the factor and the landslide, and provide a method for judging whether the landslide will occur under the same factor in the future, but it cannot monitor the slope stability in real time. change process, landslide hazards cannot be accurately predicted

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  • A slope stability discrimination method based on a surface water and underground water coupling model
  • A slope stability discrimination method based on a surface water and underground water coupling model
  • A slope stability discrimination method based on a surface water and underground water coupling model

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Embodiment Construction

[0046] Such as figure 1 , the invention provides a method for discriminating slope stability based on a surface water-groundwater coupling model, comprising the following steps:

[0047] Step 1. Use the method of on-site survey and UAV imaging to complete the elevation extraction within the corresponding monitoring range, establish the DEM model of the observation area, and organize on-site observation for calibration. Determine the morphological feature information, soil layer distribution and thickness of the studied slope through geological survey, and measure the corresponding geological and hydrological parameters of the slope soil through field or laboratory tests, mainly including: slope slope, effective internal friction of soil Angle, cohesion, soil bulk density, soil residual water content, saturated water content, VG parameters in the soil-water characteristic curve, etc. In this example, the corresponding geological and hydrological parameters of the soil inside t...

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Abstract

The invention provides a slope stability discrimination method based on a surface water and groundwater coupling model, which comprises the following steps of establishing a slope internal water leveldetermination model, and simulating a water level change process in a slope according to surface water level observation data information and the surface water and groundwater coupling model; analyzing the actual water level in the local slope through the water content monitoring data in the local slope and a VG function, and comparing the actual water level with a simulation result for correction; and establishing a slope stability analysis model based on the obtained internal water level of the slope, finding out a most dangerous landslide surface by utilizing an intelligent algorithm and asimplified graduation method, obtaining a minimum stability coefficient of the slope, and judging the stability of the slope. According to the present invention, the change process of the water levelin the side slope can be simulated according to the observation data of the surface water level and the water content in the side slope, and then the side slope stability is evaluated; the most dangerous sliding surface is accurately found out through the iterative computation of an intelligent algorithm, the slope instability time and the instability area are predicted, and the landslide disasters are predicted.

Description

technical field [0001] The invention relates to assessing the sliding stability of a slope during the exchange process of surface water and groundwater, and specifically proposes a method for distinguishing and predicting slope stability based on a coupling model of surface water and groundwater. Through the combination of field data monitoring and background slope internal water level determination model and slope stability coefficient determination model, the slope stability in the process of surface water and groundwater exchange is evaluated and predicted. Background technique [0002] According to the landslide thickness, the sliding instability of slope can be divided into four types: shallow landslide, middle layer landslide, deep layer landslide and ultra-deep layer landslide. At present, people's research focuses on shallow landslides and middle-deep landslides. Shallow landslides mainly occur on mountains with relatively thin soil thickness, and they lose stability...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G01N33/24
Inventor 孔俊孙杰张新周吴彦王青韩笑
Owner HOHAI UNIV
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