煤矿开采中的岩层应力分布与变形移动的DDA模拟

煤矿开采中的岩层应力分布与变形移动的DDA模拟 English Version

中国矿业大学煤炭资源与安全开采国家重点实验室；北京市岩石混凝土破坏力学重点实验室；中国矿业大学煤炭资源与安全开采国家重点实验室北京100083；北京100083；

基金项目: 国家重点基础研究规划项目(2002CB412705);;教育部“新世纪优秀人才支持计划”资助项目(NCET-05-0215)

1.State Key Laboratory of Coal Resources and Safety Mining China University of Mining Technology Beijing 100083 China 2.Beijing Laboratory of Fracture and Damage Mechanics of Rock and Concrete Beijing 100083 China

摘要: 应用DDA数值方法模拟分析了深部煤矿开采中上覆岩层的应力场变化和变形移动规律,并与相似物理模型试验进行了对比。结果表明:DDA法可以有效地模拟出上覆岩层的应力场变化趋势和变化范围、不连续块体的变形和位移、岩层垮落和“离层”现象。数值模拟结果与模型实验结果相吻合。
- 非连续变形分析(DDA) /
- 应力 /
- 变形移动 /
- 岩层 /
- 数值模拟 /
- 深部开采
Abstract: The discontinuous deformation analysis method(DDA) was employed to numerically simulate the stress distribution and deformation of rock strata during the excavation in a coal mine.In order to verify the efficiency of simulation,the numerical results were compared with those of a modeling experimental measurement.It was shown that the variations of the stress field of rock strata,deformation and displacement of discontinuous blocks,strata collapse and abscises could be efficiently figured out by means of DDA method.There was a good agreement between the DDA simulation and the modeling experimental measurement.
- DDA /
- stress /
- displacement /
- rock stratum /
- numerical simulation /
- mine excavation