Abstract:
With the gradual deepening of mining, Shanxi Huajin Jining Coal Industry is gradually facing the problems of difficult tunneling and supporting of mining roadway under high stress environment. Taking the 2208 return air roadway of the mine as the research object, with the help of FLAC
3D, the influence of the roadway on the deformation of the surrounding rock (roof subsidence, floor bulging, side deformation), the depth of the failure zone and the failure volume of the roadway was analyzed from three aspects: geological conditions, support methods and construction technology. It is found that the fault geological structure has a significant impact on the stability of the mining roadway and the surrounding coal and rock mass, and the support of the mining roadway should be strengthened when the fault geological structure is exposed in the mining roadway, the bolt support can effectively improve the deformation of the surrounding rock of the roadway, and the timely support method should be used to strengthen the mining roadway, and minimize the exposed area of the roof, so as to maintain the stability of the surrounding rock of the roadway to the greatest extent.