So it become the key link solving the gas extraction in low-permeability coal beds to insure in coal mine security and enhance production efficiency.
因此，解决低渗透煤层的瓦斯抽放已成为确保煤矿安全生产，提高煤矿生产效率的关键环节。
This paper introduces the main gas extraction and drainage techniques used in Yangquan Coal Mine at present and the application scope and deterministic accordance of these techniques.
主要介绍了阳泉煤矿目前主要的瓦斯抽放技术和方法及其适应范围和确定依据。
Test results of surface gas extraction technology from boreholes in the goaf in Zhangbei Coal Mine, Huainan Mining Group are introduced in the paper.
本文介绍了淮南矿区张北矿地面钻孔抽采采空区瓦斯技术的试验成果。
We have analysed the geological hydrology state of Lingquan open-pit coal mine, and proposed the coal extraction scheme of this mine F4 shear-zone coal wall.
分析了灵泉露天煤矿地质水文状况，提出了该矿f 4断层带煤壁回采方案。
However, Mr Wang said the partners hoped to establish a new opencast mine near their existing coal-extraction venture at Xiwan in Shaanxi, in which Anglo American holds a majority stake.
但王国柱表示，双方希望在现有的陕西西湾煤炭开采转化合资企业附近，开发一座新的露天煤矿，由英美资源集团持有多数股权。
However, Mr Wang said the partners hoped to establish a new opencast mine near their existing coal-extraction venture at Xiwan in Shaanxi, in which Anglo American holds a majority stake.
但王国柱表示，双方希望在现有的陕西西湾煤炭开采转化合资企业附近，开发一座新的露天煤矿，由英美资源集团持有多数股权。
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