管理效益从何处来?湘永公司通过大力推广单体液压支柱,2007年以来降低坑耗达400余立方米,节约支护成本20余万元,而且做到了精采细挖,回采收率达到了90%以上,按原来木支护巷道式采煤回采率70%计算,创价值1000多万元,最重要的是金属支护夯实了安全基础,工作面有“铁将军”把关,过去频发的顶板事故,现在彻底消灭了。 Management benefits come from? Xiang Yong through the promotion of single hydraulic props, since 2007 to reduce the pit consumption of 400 cubic meters, saving more than 200,000 yuan cost of support, and to make a brilliant cut, the recovery rate reached More than 90%, according to the original timber roadway coal mining recovery rate of 70%, creating a value of more than 1000 million, the most important thing is the metal support to consolidate the safety foundation, the face has “Iron General” checks, the past frequency The fat roof accident, now completely eliminated.