Protective Layer Numerical Simulation Research on Deformation of Surrounding Rock under the Conditions of Different Mining Heights
After protective seam mined,with the propulsion of working face,the overlying strata get to displacement and deformation.And it appeared increasing stress zone or decreasing stress zone in a certain range of roof and floor.At the same time,the movement of overlying strata and pressure relief of rock make ground stress of protective seam decreased and fracture development.Using numerical simulation software FLAC2D to survey movement and deformation and stress distribution law of protected seam in Changping mine,to confirm result of pressure relief antireflection of No.3 coal seam which is covered and provides precondition for the design of gas extraction.
protective seam displacement and deformation stress distribution numerical simulation
Fu Xing Zhang Hongwei Huo Bingjie Zhu Feng
School of Mines, Liaoning Technical University, Fuxin , 123000, China
国际会议
International Symposium on Rock Mechanics and Mine Dynamic Disaster Prevention(岩石力学与矿井动力灾害防治国际学术研讨会)
辽宁阜新
英文
275-281
2013-07-13（万方平台首次上网日期，不代表论文的发表时间）