Fuzzy equivalent clustering analysis of surrounding rock stability in Wangcun mine

There is serious deformation and damage in the surrounding rock of roadway and chamber in Wangcun mine of Chenghe mining area. The stability of surrounding rock is classified as very unstable, unstable, basically stable, stable, and very stable by means of fuzzy equivalent clustering analysis, based on data from eight typical roadways and chambers, with the compressive strength, Poisson's ratio, lateral pressure coefficient, and the elastic modulus of surrounding rock, depth of roadway beneath the ground, the tunnel span, the maximum stress concentration and the average mobile speed of surrounding rock are taken as stability factors. The influence factors of the surrounding rock stability are classified as the most important, main and general. The type of stability of surrounding rock in the roadways and chambers are determined accordingly. The results show that the fuzzy equivalent clustering analysis is an applicable and effective method for analyzing the stability of surrounding rock of the mine, provides reliable theoretical basis for design of surrounding rock supporting.