摘要
围岩松动圈大小的测试对巷道的破坏范围及支护方式的确定具有重要意义。针对三河尖煤矿南翼软岩巷道围岩变形强烈、破坏范围大(大松动圈)的特点,提出了利用钻孔摄像技术测量围岩松动圈大小,并利用钻孔测量系统对-980 m南翼软岩巷道围岩内三个不同深度围岩松动破碎情况进行直观分析,得出了三个测点的围岩松动圈的厚度,为南翼软岩巷道的支护方案设计提供了依据。
It ＇s significant that test size of rock loose circle for determination of roadway damage and supporting ways. Aimed at the char- acteristic of south wing soft rock roadway surrounding rock with deformation strongly and big destructive of Sanhejian Coal Mine, pro- posed borehole camera technology to measure the size of the rock loose circle, and made visual analysis of - 980 m south wing soft rock tunnel in three different depth of the surrounding rock loose broken by drilling measurement system, and obtained the three points thick- ness of rock loose circle, and provide a basis for the supporting method design of the south wing soft rock roadway.
出处
《煤》
2012年第11期33-35,共3页
Coal
关键词
围岩松动圈
软岩巷道
钻孔摄像技术
rock loose circle
soft rock tunnel
borehole camera technology
