摘要
通过PFC2D颗粒流软件对工作面推进不同宽度、不同基岩高度、不同岩性条件下煤层开采问题进行模拟,得出覆岩破坏的一般规律。同时,再采用损伤力学理论进行分析,推导得出的结论与数值模拟相比较,两者结果具有一致性,说明推出的结论可行有效,有助于解决目前薄基岩下煤层开采遇到的难题,为矿井的安全稳定生产提供了参考。
The seam mining problems of different width, different bedrock height, different lithological characters of working face advan- cing are simulated by using PFC2D particle flow software, and the general laws of overburden failue are obtained. Comparing the conclu- sions derived from theoretical analysis of damage mechanics with numerical simulation results, two results are consistent, which shows that the conclusion of this paper is feasible, effective and contribute to solve the problems encountered by the coal seam mining under the thin bedrock,which provides a reference for safety and stability production of mine.
出处
《煤矿安全》
CAS
北大核心
2012年第8期201-203,共3页
Safety in Coal Mines
关键词
薄基岩
覆岩破坏
损伤力学
thin bedrock
overburden failure
damage mechanics
