摘要
松动圈厚度值Lp是一个多因素综合指标的体现,利用Lp值进行松动圈围岩分类,有效克服了原岩应力、围岩强度、地下水等诸多影响围岩稳定性因素难测定的困难。运用松动圈围岩分类法对某煤矿88301工作面辅助运输巷两帮进行锚杆支护设计,结果满足工程实际需要。
A thickness value Lp of the pressure releasing zone is presenting a multi factor comprehensive index. With the thickness value Lp, the rock classification of the pressure releasing zone has effectively overcome the difficulties of the in-situ rock stress, surrounding rock strength, underground water and other factors affected to the surrounding rock stability. The classification method is simple and practical. With the rock classification method of the pressure releasing zone, a bolt support design was made for the two side walls of the seam gateway for No. 88301 coal mining face. The results had met the practical requirements of the project.
出处
《煤炭科学技术》
CAS
北大核心
2006年第7期30-33,共4页
Coal Science and Technology
关键词
松动圈
围岩
煤帮
锚杆支护
pressure releasing zone
surrounding rock
buttock
bolt support
