Study on caving characteristics of roadway under excavation disturbance
Aiming at the problem of caving caused by excavation disturbance in a mine,the caving characteristics and the range of caving area in the process of excavation are calculated by using FLAC and PFC3 D coupling program through numerical analysis.It is concluded that the caving will continue to occur from the 5#inclined shaft in the process of excavation,and the initial caving range is the position of the intersection point between the 5#inclined shaft and the contact road.The connecting roadway is a high incidence area of caving,which is mainly manifested as roof caving.From the beginning of the excavation of the connecting roadway to the completion of the excavation of the 6#inclined shaft,the caving will continue to occur,which is not easy to control,and the caving area is large,which provides a certain reference for underground mining under the same conditions.
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