摘要
某煤矿采用综合机械化采煤方法,采空区处理为自然垮落法,为了判断自然垮落法处理采空区是否合理,利用岩层力学的关键层理论确定所采的3#煤层顶板的关键层为细粒砂岩层,采用原位试验法测量该"关键层"的应力状态,得出采空区上覆岩层处于稳定状态,采用全部垮落法不会导致地表产生大的沉降。
A coal mine used comprehensive mechanized coal mining method, and treated the gob using natural caving method, in order to determine the reasonability of natural caving gob method is, the key layer stratum of 3# coal seam roof is for fine sand by using the theory of rock mechanics, using the in-situ test method was used to measure the position ＂the key stratum stress state, the result show that the gob overburden is in stable state, the use of full caving method will not lead to large surface subsidence.
出处
《山东煤炭科技》
2017年第4期165-167,共3页
Shandong Coal Science and Technology
关键词
关键层理论
原位试验
采空区
沉降
key strata theory
in-situ test
mined out area
settlement
