Analysis of the influence of multiple goafs on shaft stability based on 3DMine-Rhino-FLAC^3D

With the continuous in-depth mining of the mine, a large number of goaf will be left.The instability and failure of the goaf is bound to affect the stability of the shaft located in the moving zone.The deformation and damage of the shaft will not only affect the normal production of the mine, but also cause hidden dangers such as personnel safety and property safety.With the popularization of high-performance computer and numerical simulation technology, it provides a new solution for the stability research of complex goaf and shaft.In order to understand the stability of a gold mine shaft in Inner Mongolia, based on the three-dimensional grid stacking method, this paper proposes 3DMine-rhino-FLAC^3Dcoupling modeling, which can more accurately reflect the actual situation of the surface, ore body and goaf, improve the accuracy of calculation, analyze the stress, displacement and plastic zone around the shaft, and put forward two feasible treatment measures.The results show that the two treatment measures can control the shaft deformation and effectively improve the stability of the surrounding rock around the shaft.