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为了提高煤炭资源利用率,回坡底煤矿根据实际情况对近距离煤层工作面巷道采用了内错、外错、重叠布置的设计方案。在下分层煤层开采时充分利用了上分层原有系统巷道,降低了万吨掘进率、节约了成本、提高了单进水平。对在掘进与回采过程中出现的技术问题进行了分析总结,提出了改进措施。
In order to improve the utilization rate of coal resources, the coal seam mine backwashing adopted the design plan of internal fault, external fault and overlapping arrangement according to the actual conditions. In the next stratified coal seam mining fully utilized the stratification of the original system of roadway, reducing the 10,000-ton boring rate, saving costs and improve the single-entry level. The technical problems appearing in the process of excavation and recovery are analyzed and summarized, and the improvement measures are put forward.