Analysis on the Mechanism and Development Factors of goaf collapse in coal mine
Junlian County,located in the south of Sichuan Province,has a large number of goaf areas,which causes geological disasters such as collapse and fissure.Based on investigation of collapse,fracture and other disasters in the study area,the influence of factors such as caving zone,water-conducting fracture,depth-thickness ratio,shutdown time,mining safety depth,surface movement and deformation on the disaster is analyzed.The results show that depth-thickness ratio,mining safety depth,surface movement and deformation are the main influencing factors of coal mine goaf collapse.
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