Recognition method for main sliding direction of landslide

Abstract

The invention provides a method for identifying main sliding direction of landslide, which is characterized in that the method is carried out according to the following steps: engineering investigation data of a sliding mass is obtained, a basic data map theme of the sliding mass is constructed, and grid division is carried out on the sliding mass, thereby obtaining a geologic section grid theme,a drill data grid theme and a surface elevation grid theme; a sliding mass thickness grid theme is obtained by a GIS system; and weight of the sliding mass W(i , j) in each grid (i, j) is obtained with a combination of sliding mass geotechnical gravity index gamma; then, gradient order is called to obtain gliding force T(i, j) of each grid; aspect order is called to construct a trend map theme ofa slip plane and obtain sliding azimuth angle Asp(i, j) of the sliding mass in each grid; thereby obtaining the main sliding direction of the sliding mass. The invention has the remarkable effects that the method can be little affected by external factors, has high reliability and simple operation, can provide accurate and scientific foundation for landslide control engineering, ensures optimizeddesign and saves investment cost.

Description

technical field [0001] The invention relates to the technical field of landslide prevention and construction, in particular to a method for identifying the main sliding direction of a landslide mass. Background technique [0002] In the design of landslide control engineering, the design resistance of supporting structures (such as anti-slide piles, gravity retaining walls, etc.) direction. The determination of the main sliding direction of the landslide is one of the important parameters for calculating the sliding thrust, designing the resistance of the landslide retaining, and further designing the retaining structure. The inaccurate judgment of the main sliding direction of the landslide may lead to incorrect calculation of the sliding thrust and the wrong direction of the design of the landslide retaining resistance, which will affect the layout and design deviation of the retaining structure, or blindly increase the investment in the treatment project, and even lead t...

AI Technical Summary

Problems solved by technology

The judgment method of on-site survey and observation is too macroscopic and subject to human subjective influence, and the method of drilling to expose rock and soil scratches on the sliding surface is too local or mesoscopic, and it is difficult to represent the overall main sliding direction of the sliding mass

[0004] The main problems of the existing technology: it is greatly affected by the actual conditions of the site, local damage conditions and human subjective factors, and the discriminant value has a large prediction error, low reliability, and complicated operation

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