Study on fracture law of roof based on thick plate theory
Based on the Ressine thick plate theory,the mechanical characteristics of the layered roof of a certain working face in Yuwu Coal Mine were studied,and the deflection distribution state of the basic roof of the working face when it was broken for the first time was analyzed.Meanwhile,3DEC numerical simulation software was used to systematically analyze and study the characteristics of over-burden deformation and fracture process in the mining process of the working face,and the fracture law of the roof rock layer of a certain working face in Yuwu Coal Mine was summarized and summarized.Analyzing the measured resistance data of the hydraulic support on site,it was found that the initial weighting interval of the working face was about 42 m,and the periodic weighting interval was about 15 m.The laws of roof fracture and weighting were basically consistent with theoretical analysis and numerical simulation results.
万方数据
维普
