【正文】 ...............................................................................................................................10 井田構(gòu)造 ...................................................................................................................................................10 水文地質(zhì)概況 ...................................................................................................................................................12 區(qū)域水文地質(zhì) ...........................................................................................................................................12 地下水的補(bǔ)給、徑流與排泄 ....................................................................................................................13 井田水文地質(zhì)條件 ....................................................................................................................................13 礦井涌水量 ...............................................................................................................................................16 礦井煤層及瓦斯概況 .......................................................................................................................................17 煤層 ...........................................................................................................................................................17 煤質(zhì) ...........................................................................................................................................................22 瓦斯概況 ...................................................................................................................................................243 瓦斯賦存特征 ................................................................................................................................................27 煤層氣賦存特征 ...............................................................................................................................................27 煤層氣源巖特征 ........................................................................................................................................27 煤層氣封蓋條件 ........................................................................................................................................27 地質(zhì)構(gòu)造 ...................................................................................................................................................27 煤層氣抽排及利用情況 ............................................................................................................................28 煤層氣資源量估算 ...........................................................................................................................................284 礦井瓦斯抽采的必要性及可行性 ..................................................................................................................29 礦井瓦斯基礎(chǔ)參數(shù) ...........................................................................................................................................29 礦井瓦斯抽采的必要性 ...................................................................................................................................29 礦井瓦斯涌出量 ........................................................................................................................................29 回采瓦斯涌量 ...........................................................................................................................................30 掘進(jìn)工作面瓦斯涌出 ................................................................................................................................30 采空區(qū)瓦斯涌出 ........................................................................................................................................30 礦井可抽瓦斯量及抽采服務(wù)年限 ...................................................................................................................31 回采工作面預(yù)抽瓦斯量 ............................................................................................................................31 掘進(jìn)工作面預(yù)抽瓦斯量 ............................................................................................................................31 采空區(qū)預(yù) 抽 瓦斯量： ................................................................................................................................31 礦井瓦斯抽采的可行性分析 ...........................................................................................................................325 礦井瓦斯抽采的方法 .....................................................................................................................................33 鄰近層瓦斯抽采 ...............................................................................................................................................33 采空區(qū)密閉插管抽采. ......................................................................................................................................34 概述 ...........................................................................................................................................................34 閉墻插管的布置 ........................................................................................................................................34 插管與主管的連接與管理 ........................................................................................................................34 回采工作面采空抽采 .......................................................................................................................................34 概述 ...........................................................................................................................................................34 鉆孔參數(shù) ...................................................................................................................................................346 結(jié)論 .............................................................................................................................................................