Sensitivity Analysis of Slope Stability Influencing Factors Based on GRA-AHP Combined Range Analysis Composite Algorithm
ZHAO Li1, LI Zhengguo1, SU Dengfeng1, CHEN Banghong1, TIAN Renjun2
1.School of Environment and Resources, Southwest University of Science and Technology, Mianyang 621000, Sichuan, China;
2.Sichuan Occupational Safety and Health Association, Chengdu 610012, Sichuan, China
Abstract：The single application of analytical hierarchy process (AHP) and grey relational analysis (GRA) algorithm is always affected by some subjective factors, leading to great deviation between the obtained evaluation result and the actual result. In view of this problem, a composite algorithm based on an integrated range analysis with GRA and AHP was proposed. Then, a phosphate mine in the southwest China was taken as an example, and this algorithm was adopted to analyze the sensitivity of factors, including gravity, internal friction angle, cohesive force, elastic modulus and Poisson'sratio, to the stability of slope in the Area A. The results show that the sensitivity of those influencing factors to the slope stability in Area A is in the following descending order: internal friction angle, cohesive force, gravity, elastic modulus, Poisson's ratio. It is found that the analysis result is consistent with the actual situation of the mine.
2024, Vol. 44 
