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伪顶是在煤层与直接顶之间存在的极易垮落的软弱岩层,在井下采煤工作面回采时,会常常遇到。由于其稳定性差、维护困难,经常造成工作面顶板冒落,给顶板管理带来了很大困难。东荣三矿在生产实践中,总结了一套托伪顶开采的顶板管理方法,填补了托复合软顶回采上的空白,同时为托伪顶开采煤层,提高煤质、安全高效打造基础。
Pseudo-top is a highly collapsible weak rock that exists between the coal seam and the direct top, and is often encountered during the mining of underground coalfaces. Due to its poor stability, maintenance difficulties, often caused roof caving, roof management has brought great difficulties. In the production practice, Dongrong No. 3 mine sums up a set of roof management method of top-false roof mining to fill in the blank of soft top mining in support complex, and at the same time, it builds foundation for mining coal seam with top-false roof, improving coal quality and safety and high efficiency.