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Discrimination of landslide stability based on improved catastrophe theory

WU Xin1 ZHAO Haoran1 ZHENG Xiuqing1 CHEN Junfeng1 WEN Xiaoyi1

(1.College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan, China 030000)
【Knowledge Link】dip slope

【Abstract】A comprehensive method for landslide stability discriminant is proposed based on the improved catastrophe theory. The 24 landslides in Jiaocheng County, Shanxi Province, were investigated. We chose relative elevation differences, rock and mass types, slope rock weathering degree and fracture development characteristics, plant cover ratio, slope structure type, slope morphology, slope ratio, trailing edge load, leading edge slope, and precipitation as indicators from three aspects of hazard inducing environment, attribute of hazard bearing body, and inducing disaster factor, and then we established a landslide stability discriminant model. The initial membership function values were derived by combining catastrophe theory, fuzzy mathematics, and contribution rate method. Normalization formula was utilized to form recursive calculating to get total catastrophe progression, which then was transformed into a new criterion by the improved catastrophe theory to determine landslide stability. The improved catastrophe theory to evaluate the stability of landslides has a higher accuracy by comparing the improved results with on-site verification results. Therefore, this method can be used to evaluate the stability of landslide and provide the basis for landslide prevention and control.

【Keywords】 landslide stability; improved catastrophe theory; discrimination method; inducing disaster factor; model;

【DOI】

【Funds】 National Natural Science Foundation of China (41752221) Shanxi Hydrology and Water Resources Survey Project (ZNGZ2015-036)

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This Article

ISSN:1004-4574

CN: 23-1324/X

Vol 28, No. 04, Pages 122-130

August 2019

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Abstract

  • 1 Basic theory and method
  • 2 Case studies
  • 3 Conclusions
  • References