河北省蔚县南留庄镇寨沟煤矿,走与大矿合作之路,投资180万元对全矿进行了全面技术改造,采用了单体液压支柱、长壁式采煤工艺,获得了良好的技术经济效果。产量大幅度提高,全员效率达1.1吨/工,资源回收率达75%以上;安全生产情况显著改观,百万吨死亡率为零。现该矿已成为省级质量标准化矿井。 Zhaogou Coal Mine, Nanliuzhuang Town, Yuxian County, Hebei Province, took the road of cooperation with major mines and invested 1.8 million yuan to conduct a comprehensive technological transformation of the mines. The project adopted a single-hydraulic prop and a long-wall coal mining process and achieved good results The technical and economic results. Production increased substantially, the full efficiency of 1.1 tons / worker, resource recovery rate of 75% or more; significant improvement in production safety, million tons of deaths was zero. Now the mine has become a provincial-level quality standardized mine.