Analysis on stability of mountain mass and numerical calculation of landslide resistance based on strength reduction method

• Published in: Arabian journal of geosciences Vol. 13; no. 14
• Main Author: Yu, Mingdong
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.07.2020; Springer Nature B.V
• Subjects: Analysis; Coordinate systems; Coordinates; Earth and Environmental Science; Earth science; Earth Sciences; Geological Modeling and Geospatial Data Analysis; Gmgda 2019; Internal friction; Landslides; Mountains; Parameters; Reduction; Reliability; Reliability analysis; Reliability aspects; Safety factors; Stability; Stability analysis; Strength; Mountain stability; Cohesion; Safety factor; Strength reduction method; Limit equilibrium method; Internal friction angle; Chaos optimization method; Landslide
• ISSN: 1866-7511; 1866-7538
• DOI: 10.1007/s12517-020-05617-y

In order to determine the safety factor of the mountain, a method of stability analysis and numerical calculation of landslide resistance based on strength reduction method is designed. Two strength reduction methods are used to calculate two reduction factors such as internal friction angle and cohesion, and the smaller value is taken as the ultimate safety factor. The relationship between the reduction parameters is determined, and the reliability of the double strength reduction method is optimized. For the viscous mountain slope, k = R1 × R2 is used as the reduction and matching mechanism of the critical state parameters in the strength parameter coordinate system, the position of the critical state parameters in the strength parameter coordinate system is determined, and the degradation path of the slope strength parameters is obtained, so as to realize the strength reduction of the mountain. The experimental results show that the maximum error of the method is 0.01, which improves the reliability of mountain stability analysis.