Landslide monitoring key point arrangement method based on three-dimensional geologic model

Abstract

The invention provides a landslide monitoring key point arrangement method based on a three-dimensional geological model. The method comprises the steps: obtaining geological data, and building the three-dimensional geological model; establishing a landslide three-dimensional numerical analysis model according to the obtained three-dimensional geological model; establishing a landslide mass material limit strain analysis model, and determining the strain of the landslide mass material corresponding to the limit load as the limit strain of the landslide mass material; acquiring a landslide damage evolution process; and determining landslide monitoring arrangement key points according to the landslide damage development evolution process. According to the method, the arrangement of the monitoring points is determined according to the analyzed damage evolution rule of the landslide mass under the condition of strength reduction by taking the limit strain of the landslide mass material asa criterion, so that the design and arrangement of the monitoring points are more reasonable and accurate, the current landslide damage stage can be known in time conveniently through feedback of monitoring data, and support can be provided for early warning of landslide disasters.

Description

technical field [0001] The invention belongs to the technical field of geological landslide early warning analysis, and in particular relates to a method for arranging key points of landslide monitoring based on a three-dimensional geological model. Background technique [0002] Patent document CN109870484A discloses an early warning system for water-bearing slope instability, including a resistivity acquisition and monitoring unit, a signal transmission unit, a computer analysis unit, a computer management unit, and a forecast and early warning unit; wherein, the resistivity acquisition and monitoring unit is arranged in the slope crack Or drill holes at a certain depth on both sides of the sliding belt for real-time collection of surface and deep resistivity data of the slope, and the signal transmission unit sends the resistivity data to the computer analysis sheet in time; the computer analysis unit includes numerical analysis software and virtual reality software The nu...

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Problems solved by technology

[0005] As mentioned above, the existing geological landslide early warning analysis needs to set monitoring points, but most of these analysis methods use the overall failure condition, and there are at least two problems: one is that the location of the failure surface needs to be known in advance, and the scope of application is small; the other is that it cannot be predicted In the whole process of landslide damage, it is impossible to know which point in the landslide first cracks and the evolution process of landslide damage, and it is difficult to accurately determine the key point position of landslide prevention and control

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