摘要
当多条软岩巷道掘进时,掘进扰动影响较大。针对巷道在不同水平距离条件下,以山西三聚盛煤矿一采区三条上山巷道为工程背景,采用数值模拟和现场实测等手段对其进行了研究。结果表明:巷道水平距离的增加能够显著削弱软岩巷道间的掘进扰动影响,掘进巷道对邻近巷道影响程度较大的范围在掘进工作面为中心的前后10～20m之内,该区域表现为位移变形较其它范围内的巷道大,变形速度也较大。当工作面距监测点距离继续增大时,巷道围岩变形量明显减少,开挖扰动对本巷道围岩变形的影响比对邻近巷道的大。
When a number of soft rock tunnels are excavated,the digging disturbance has a great influence.For the roadway at different horizontal distances,a three-uphill roadway in a mining area of Sanjusheng Coal MIne is taken as the engineering background,and numerical simulation and field measurement are used to study it.The results show that the increase of the horizontal distance of the roadway can significantly reduce the influence of the excavation disturbance between soft rock roadways.The extent of the influence of the excavation roadway on the adjacent roadway is within 10 to 20m before and after the excavation working surface as the center.This area shows the displacement.The deformation is larger than that in other areas,and the deformation speed is also large.When the distance between the working surface and the monitoring point continues to increase,the deformation of the surrounding rock of the roadway is obviously reduced.The influence of the excavation disturbance on the surrounding rock deformation of the roadway is greater than that of the adjacent roadway.
作者
孙强
SUN Qiang(Jincheng Hongsheng mine construction and installation branch,Shanxi Jincheng 048205)
出处
《煤矿现代化》
2019年第3期130-133,共4页
Coal Mine Modernization
关键词
软岩巷道
巷道掘进
扰动影响
数值模拟
soft rock roadway
roadway excavation
disturbance effect
numerical simulation
