湖南省煤炭和页岩气协同开采研究

Research of Hunan coal and shale gas collaborative mining

湖南各煤田煤系地层厚大且含页岩类岩层,页岩气资源潜力巨大。煤层开采在其上覆岩层中会形成"上三带",通过数值分析对煤层开采对上覆含气页岩层影响进行了数值模拟,结果表明煤层开采导致上覆页岩层形成导气裂隙,对页岩气的高效开采有积极作用。因此,可在条件允许地区积极进行煤炭与页岩气协同开采。

The coal measure strata of each coalfields in Hunan is large and thick and there are shale strata in these coal measure strata. The shale strata has gas great resources poten- tialities of shale gas. The coal mining can form ＂three zone＂ in the overlying strata.Numerical simulation was used to analysis the effect of shale strata from coal mining. The result show that the coal mining can cause the formation of mediated gas fissures in the shale strata be- cause of coal mining. These fissures has a positive effect of the shale mining. So the coal and shale gas collaborative mining should be actively developed at the conditions allowed region.