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本文所论述矿体的特点是矿体的直接顶板由不稳固到极不稳固,厚1～2.5米;间接顶板(又称老顶)由不稳固至很稳固;倾角为0～30°;矿体厚度为1～2.5米. 从目前这类矿山的生产现状来看,其开采方法主要是采用长壁崩落法;还有少数矿山采用房柱法.当采用长壁崩落法时,往往要消耗大量坑木,回采强度较低,有时还要采取人工强制崩落老顶;当采用房柱法时,
The characteristics of the ore body discussed in this paper are that the direct roof of the orebody is unstable to extremely unstable with a thickness of 1 ~ 2.5m; the indirect roof (also known as the old roof) is unstable and stable; the dip angle is 0 ~ 30 °; Body thickness of 1 ~ 2.5 meters from the current production status of such mines point of view, the mining method is mainly the use of longwall caving method; there are a few mines using the column method .When the use of longwall caving method, it is often consumed A large number of pit pits, mining strength is low, and sometimes forced to take the initiative to break down the roof; when using the method of housing,