摘要
针对大雁公司第三煤矿巷道存在不对称地应力、岩性多样等引起巷道破坏严重问题,对巷道变形特征、裂缝分布、围岩松动区进行一系列现场试验。确定了巷道顶板破坏位置、巷道围岩应力和裂纹分布,采用综合支护分步联合控制后,巷道顶板和帮部围岩变形得到明显控制。
Aiming at the serious problem of roadway failure caused by asymmetric ground stress and diverse lithology in the roadway of the No.3 Coal Mine in Dayan Company,a series of on-site tests are conducted on the deformation characteristics,crack distribution,and surrounding rock loosening area of the roadway.The stress and crack distribution of the roadway surrounding rock,as well as the failure location of the roadway roof,are determined.After adopting comprehensive support and step-by-step joint control,the deformation of the roadway roof and surrounding rock at the side is significantly controlled.
作者
李奎松
Li Kuisong(National Energy Group Inner Mongolia Dayan Mining Industry Group Co.,Ltd.No.3 Coal Mine,Inner Mongolia Hulun Buir 021122)
出处
《山东煤炭科技》
2023年第12期20-23,27,共5页
Shandong Coal Science and Technology
关键词
高应力
巷道
破坏特征
裂隙
high stress
roadway
failure characteristics
fissure
