摘要
为保障极近距离煤层采空区下3109轨道回风巷围岩稳定,根据破碎围岩的特征,采用数值模拟软件进行围岩支护方式的模拟分析,确定巷道采用锚网梁+架棚支护,基于巷道特征进行支护参数设计,在巷道掘进及工作面回采期间进行围岩变形观测分析。结果表明:巷道在现有支护方案下,围岩处于稳定状态,满足回采巷道使用要求。
In order to ensure the surrounding rock stability of the 3109 track return air roadway under the extremely close coal seam goaf, according to the characteristics of the broken surrounding rock, the numerical simulation software is used to simulate and analyze the surrounding rock support mode, and the anchor mesh beam + frame shed support is adopted in the roadway. The protection parameters are designed based on the characteristics of the roadway,and the surrounding rock deformation is observed and analyzed during roadway driving and working face mining.The results show that under the existing support scheme, the surrounding rock is in a stable state, which can meet the use of mining roadway.
作者
曹海彬
Cao Haibin(Shanxi Lu'an Chemical Group Puxian County Development Coal Industry Co.,Ltd.,Shanxi Puxian County 041206)
出处
《山东煤炭科技》
2021年第10期48-50,54,57,共5页
Shandong Coal Science and Technology
关键词
近距离
回采
巷道
支护
close range
mining
roadway
support
