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首页> 外文会议>International Symposium on Mine Safety Science and Engineering >Reservoir Properties Influence on Gas Emission of 14211 Prepared Mining-Face, in Seam II 1 of Xin'an Coalmine, Henan Province
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Reservoir Properties Influence on Gas Emission of 14211 Prepared Mining-Face, in Seam II 1 of Xin'an Coalmine, Henan Province

机译：储层物业对河南新安煤矿煤层1的14211型矿面气体排放的影响

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摘要

14211 was a prepared mining-face in Xin'an Coalmine, Henan province, and it has not been done any work for mining so far. Geological parameters selected in this paper include seam thickness, burial depth, sandstone ratios in 20 m and 40 m coal seam roof, gas content and minor faults. With the calculating results of gas emission from 2007 to 2010 in other working faces, this paper interpreted the influence on gas emission of selected geological parameters. The gas emission was combined with characters of micro-cracks, permeability and isothermal adsorption. The results demonstrated that, in 14211 preparing face, there is a negative correlation between the absolute gas emission and 20 m-sandstone ratio, while a significant positive correlation between the absolute gas emission and the 40 m sandstone ratio. There is gas conductivity in 20 m-sandstone, adjacent to the coal seam roof. And this effect becomes so less indistinguishable in sandstone far away from coal seam that it transforms to the gas-storage effect, which is the same with tight sand and mud stone. Analysis concluded that this phenomenon is intimately associated with macroscopic type of coal and characteristic of micro-crack, isothermal adsorption and permeability.
机译：14211是在河南省新安煤矿的准备好的矿物脸，到目前为止，它还没有完成矿业的任何工作。本文中选择的地质参数包括20米和40米煤层屋顶，煤气含量和次要断层的接缝厚度，埋藏深度，砂岩比。随着2007年至2010年燃气排放的计算结果在其他工作面上，本文解释了对所选地质参数气体排放的影响。将气体排放与微裂纹，渗透率和等温吸附的特征合并。结果表明，在14211的准备面上，绝对气体发射和20米砂岩比之间存在负相关，而绝对气体发射与40μm砂岩比之间的显着正相关。 20米砂岩中有气体导电性，毗邻煤层屋顶。这种效果在远离煤层的砂岩中难以区分，即它转变为储气效果，这与紧密的沙子和泥石石相同。分析得出结论，这种现象与宏观类型的煤和微裂纹，等温吸附和渗透性的特征密切相关。

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