摘要
晋煤集团某矿15~#煤三盘区为新的区域,经探明顶板灰岩分布不均衡,灰岩厚度变化较大,巷道围岩特点为"两软一硬",即煤层软、底板软,顶板坚硬。根据围岩特性进行巷道支护设计,通过向支护系统施加较大预紧力,能够有效控制巷道围岩变形。
Jin coal group 15# coal mine three panel for the new area, the proven roof uneven distribution of limestone, limestone thickness change is bigger, surrounding rock characteristics as the ＂two soft a hard＂, namely soft, soft coal, hard roof. According to the characteristics of the surrounding rock, the design of roadway support is designed, which can effectively control the deformation of roadway surrounding rock by exerting a large pre-tightening force on the supporting system.
出处
《山东煤炭科技》
2017年第5期17-19,共3页
Shandong Coal Science and Technology
关键词
复杂
软煤
巷道
支护
complex soft coal roadway support
