关键词: 倾斜产状, 软弱夹层, 贯穿巷道, 大变形, 围岩稳定性

Abstract: In order to research to the influence of the tilted weak intercalation throughout roadway form different site on stability of surrounding rock,analyse the influence of the weak intercalation on the displacement field, stress field and plastic zone of surrounding rock of which no weak intercalation,weak intercalation throughout roadway on top,middle,bottom four models under the same condition by using numerical simulation software Flac3D. Comparison of numerical results show that existence of weak intercalated layers lead to overall roadway surrounding rock displacement field,stress field non-uniform distribution, the increased scope of plastic zone, the parts of weak intercalated tend to large deformation, Relatively the roadway roof stability of the worst when the weak intercalated through the top of roadway.The roadway deformation observation in the field also verify the results of the numerical simulation analysis. If there is weak intercalated layers throughout the roadway,it should take corresponding support measures to control displacement, stress concentration and the increase in plastic zone caused by weak intercalation, having the definite guiding significance for support measures under appropriate conditions in the future.

Key words: tilt occurrence, weak intercalation, throughout roadway, large deformation, stability of surrounding rock