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1 前言目前,我尉以及大多数国外煤矿在处理井下冒落空洞时,都采用人工搭木垛或安装锚杆的方法。此时工人要在几乎完全没有支护的条件下进入空洞内作业,这是十分危险的。木垛支撑只能与顶板点接触,对空洞侧面的岩石几乎没有支护作用,因此往往不能阻止空洞继续冒落,而且消耗大量木材。木垛支护不论从技术、经济和安全看,都不能满足煤炭工业生产发展的要求。
1 Preface At present, we and most foreign coal mines use man-made wood-chip stacks or anchor bolts to deal with underground caverns. It is very dangerous for workers to work in a hollow space with almost no support at this time. Woodstock supports can only be in contact with the roof, barely supporting the rock on the side of the void, and therefore often can not stop the hole from continuing to fall and consume large amounts of wood. Woodpile support in terms of technology, economy and security, can not meet the requirements of the development of coal industry production.