关键词: 深部开采, 断层, 赋存状态, 巷道稳定性, 数值模拟

Abstract: Large number of Engineering practices show that the influence of faults on the roadway stability is significant.Taking the main faults F₁,F₂ and F₃ in Sanshandao Gold Mine as the engineering background,the roadway excavation process is conducted numerical simulation under the conditions of the faults with dip angle of 0°,50°,and 90°,5 m,10 m and 15 m away from roadway roof to horizontal faults,the faults with the thickness of 10 m,15 m and 20 m,the influence of fault dip angle,distance of roadway roof and faults and faults thickness on roadway stability is discussed by comparing with the roadway stability in the absence of faults.The study results show that convergence of the both sides of roadway can be increasing with the increasing of fault dip angle;the main manifestation of the influence of faults thickness on roadway stability is the subsidence increasing of roadway roof;the influence of the distance of roadway roof to fault within 10 m on safety roadway excavation is significant,therefore,some related supporting measures should be taken effectively.

Key words: Deep mining, Fault, Occurrence status, Roadway stability, Numerical simulation