摘要
通过对上部煤层刀柱破坏特征和稳定性的有限元数值分析,以及对下部煤层工作面顶板稳定性的研究,得出了下部煤层回采工作面顶板结构的稳定性特征。
Through the finite element numerical analysis on destroying characteristics and stability of tool pillar of the upper coal seam and the research on the stability of the roof of the lower coal face, this paper draws the stability characteristics of the roof structure of lower coal stoping face.
出处
《科技情报开发与经济》
2007年第16期164-165,共2页
Sci-Tech Information Development & Economy
关键词
极近距离煤层
刀柱采煤法
顶板结构
数值分析
ultra close distance coal seam
tool pillar mining method
roof structure
numerical analysis
