Comprehensive Identification of Surface Subsidence Evaluation Grades of Mines in Southwest China

Due to their complex geological structure, it is difficult systematically analyze the surface subsidence of coal mines in southwest China, and factors that cause are also different from other mines. Focusing on problem caused by mining China’s mines, a grade evaluation system for constructed based analytic hierarchy process, ten indicators established perspectives disturbance structure. A matter–element model extension theory cloud then constructed. mine Anshun, Guizhou, taken as an example calculate level thus verify scientificity theory. The results show main affect number seam layers, height comprehensive Platt hardness rock, similar northern plain Surface slope area very important. correlation degree each −0.29836, 0.192232, −0.1093 −0.46531, concluded be 2. calculated similarity overall index map 0, 0.3453, 0.7872 respectively. 2, which relatively safe state. Consistent with calculation line field situation, built this paper can have certain scientificity.