回采巷道围岩稳定性分类的应用实践

An Application on Rock Stability Classification of Gateway

回采巷道围岩的稳定性分类有很多方法,但在实际运用中,大多数方法操作起来比较困难,需要借助大量复杂的实验及现场施工,成本很高。从工程实际出发,以国标《工程岩体分级标准》[1]为基础,对煤矿回采巷道围岩进行了多目标的综合评判方法分类。实践证明:该方法概念明确、操作简单、成本低廉,具有较强的工程运用价值。

There are many ways in the stability classification of recovery tunnel country rock, but in the actual application, most of the ways are difficult to operate, and need to draw support from a large number of complex experiments and spot construction, the cost is great. Proceeded from the construction practice, based on the national standards Classification Standards of Engineering Rock Mass, the extensive - object and synthetical ways classifica- tion was made for the coal mine recovery tunnel country rock. The practice shows that this kind of classification has explicit idea, uncomplicated operation, low cost, high construction application value.