摘要
为保障15101运输顺槽围岩的稳定,采用现场实测的方式进行围岩松动圈的测试分析,基于测试结果得出运输顺槽处的两帮松动圈范围约为1.6 m,基于工作面地质条件和围岩松动圈分析结果,确定巷道采用锚网索支护方案,采用理论分析的方式进行巷道各项支护参数的设计,在巷道掘进期间进行围岩变形分析。结果表明:巷道采用现有支护方案,掘进期间围岩变形量小,保障了围岩的稳定。
In order to ensure the stability of the surrounding rock along the 15101 transportation channel,the on-site measurement method was used to test and analyze the surrounding rock loose ring.Based on the test results,the range of the two loose rings at the transportation channel is about 1.6m,based on the geological conditions of the working face.Based on the analysis results of the surrounding rock loose circle,it is determined that the roadway adopts the bolt-net-cable support scheme,and the design of various support parameters of the roadway is carried out by theoretical analysis,and the surrounding rock deformation analysis is carried out during the roadway excavation.The results show that:the existing support scheme is adopted for the roadway,the deformation of the surrounding rock is small during the excavation,and the stability of the surrounding rock is ensured.
作者
靳峰
JIN Feng(Wangyun Coal Mine Branch of Shanxi Orchid Science and Technology Venture Co.,LTD.,Jincheng 048400,China)
出处
《煤矿现代化》
2021年第4期129-131,134,共4页
Coal Mine Modernization
关键词
回采巷道
松动圈
围岩控制
围岩变形量
Mining roadway
loose zone
surrounding rock control
surrounding rock deformation
