Safety Evaluation of Surface Buildings Under the Influence of Coal Mining
In view of the threat posed by high-intensity mining in Wangjialing Coal Mine to the safety of surface buildings,a safety evaluation study is conducted.The entropy weight-fuzzy comprehensive evaluation method is proposed to evaluate the safety of surface buildings,and an evaluation index system including surface movement deformation and buildings self attributes is determined;Surface movement and deformation are selected as four types of secondary indices:surface subsidence,inclination,curvature,and horizontal deformation.The self attributes of buildings are subdivided into four secondary indices:building structure,building foundation,building construction time,and relative relationship with the working face;The entropy weight method is used to determine the weights of each index,and a fuzzy matrix is constructed.The fuzzy comprehensive evaluation model is used to analyze 5 buildings.The results indicate that the impact degree of Wangjialing Coal Mine mining on surface buildings is"moderate".Through field research,the scientificity and reliability of the entropy weight-fuzzy comprehensive evaluation method are confirmed,providing reliable technical support for decision-making in similar engineering projects.
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