Analysis of discontinuous deformation of upper rock strata of coal mine

摘要：

A two-dimensional DDA method has been employed to analyze the discontinuous deformation of upper rock strata during coalmine excavation. A discontinuous block system containing statistically distributed joints and faults has been set up to model the real rock strata based the geological data acquired at the site of excavation. The -evolution of stresses in upper roek layers, the movement of immediate roof arched by key blocks, the layer-abscise initiation and the subsidence of rock strata during excavation were simulated. The comparison of numerical analysis and laboratory test shows that the numerical DDA method can effectively model the excavation process and deformation of upper rock strata of a coalmine.

关键词： discontinuous deformation analysis (DDA) stresses displacement deformation rock strata mine ezcavation great depth

作者: YANG JU J.P.ZUO

作者单位: State Key Laboratory of Coal Resources and Safety Mining, School of Mechanics and Civil Engineering,China University of Mining & Technology, Beijing, 100083, P.R.CHINA

会议类型: 国际会议

会议名称: The 8th International Conference on Analysis of Discontinuous Deformation fundamentals & Applications to Mining & Civil Engineering ICADD-8(第八届不连续变形分析及其在采矿和土木工程中的应用国际会议)

会议地点: 北京

会议语种:英文

页码: 39-45

在线出版日期: 2007-08-14（万方平台首次上网日期，不代表论文的发表时间）