Research on stability evaluation of building foundation in coal mine goaf
When analyzing the building stability in coal mine goaf,the subjective experience method was usually used to determine the weight of evaluation indicators.This method was easily influenced by subjective factors,leading to a lack of reliability in the evaluation results.In response to this issue,a new evaluation method for the stability of building foundations in coal mine goaf was proposed.The various factors that affect the stability of building foundations in goaf were summarized,and a stability evaluation index system was con-structed.The subjective and objective weights of the evaluation indicators were obtained through analytic hierarchy process and CRITIC method,and the comprehensive weights of each evaluation indicator were calculated by combining the subjective and objective weights through game theory.A cloud model to define a normal Gaussian cloud generator was applied,the membership degree of each indicator was calculated.The evaluation score of foundation stability was calculated according to the weight and membership degree,which was matched with the classification standard of stability grade,and the final evaluation result was obtained.The experimental results showed that the reliability of the proposed evaluation method reached 0.93,effectively solving the unreliability problem caused by subjective ex-perience method,providing a more reliable method for foundation stability evaluation,and supporting and guiding the stability evaluation of buildings in coal mine goaf.
万方数据
维普
