Stability evaluation of open-cut hole in fully mechanized mining face of coal mine based on numerical simulation
Ensuring the stability of the open-cut is an important prerequisite for ensuring the safe and efficient production of mine,and is also of great significance for the timely connection of the return air system.This paper takes the control stability of A503 open-cut hole surrounding rock of a mine in Xinjiang as the research object,establishes the open-cut hole model by FL AC3 D,and determines the rationality of the supporting parameters by numerical simulation.The results show that the sur-face displacement of roadway is small,the deformation is still increasing,but the increase is small,and the surrounding rock tends to be stable,which ensures the stability of open-cut hole.Our study provides some reference for the construction and support of open-cut hole under similar conditions.
万方数据
维普
