摘要
极近距离煤层组上分层刀柱法回采后，通过对煤柱稳定性的分析及顶板运动特征的研究，得到了下分层长壁采动后顶板结构特征，预计了采场顶板压力的来源和计算方法。实践证明研究结论可靠。
Based on analyzing stability of pillars left in the gob areas and the nature of main roof movement in pillar supported uppar slici ng face in a group of closely-interspaced seams,the roof structure and its pressur e estimate in the lower slice longwall face mined are studied.Practice verifie d that the result is reliable.
出处
《山东科技大学学报（自然科学版）》
CAS
2000年第4期102-104,共3页
Journal of Shandong University of Science and Technology(Natural Science)
关键词
刀柱采煤法
长壁采煤法
采场矿压控制
顶板结构
pillar supporting mining
longwall mining
ground c ontrol in working face
