【正文】 ..................................... 5 地 層 ....................................................................................................................... 5 構(gòu) 造 ....................................................................................................................... 6 巖漿巖 ....................................................................................................................... 7 煤層 ........................................................................................................................... 7 煤層瓦斯壓力測(cè)定及瓦斯壓力梯度 ............................................................................ 10 煤層瓦斯壓力測(cè)定技術(shù) ......................................................................................... 10 煤瓦斯壓力測(cè)定 ..................................................................................................... 11 3 煤瓦斯參數(shù)及突出參數(shù)測(cè)定 ..................................................................................... 12 瓦斯含量測(cè)定 ......................................................................................................... 12 瓦斯放散初速度 ?P 測(cè)定 ....................................................................................... 14 煤的堅(jiān)固系數(shù)測(cè)定 ................................................................................................. 15 鉆屑瓦斯解吸指標(biāo) ................................................................................................. 15 鉆屑量指標(biāo) ............................................................................................................. 15 煤與瓦斯突出危險(xiǎn)性分析 ..................................................................................... 16 瓦斯涌出規(guī)律及涌出量預(yù)測(cè) ........................................................................................ 17 3 煤瓦斯涌出情況統(tǒng)計(jì) ........................................................................................... 17 3 煤深部瓦斯涌出量預(yù)測(cè) ....................................................................................... 18 3 煤高瓦斯區(qū)域分析 ............................................................................................... 21 小結(jié) ................................................................................................................................ 21 3 采空區(qū)頂板冒落規(guī)律相 似模擬實(shí)驗(yàn)研究 .......................................................................... 22 模擬實(shí)驗(yàn)方案 ................................................................................................................ 22 模擬工作面條件 ..................................................................................................... 22 相似條件確定 ......................................................................................................... 22 模型的鋪設(shè) ............................................................................................................. 22 實(shí)驗(yàn)方法 ................................................................................................................. 22 巖層控制的關(guān)鍵層理論簡(jiǎn)介 ........................................................................................ 24 巖層控制關(guān)鍵層理論的提出 ................................................................................. 24 關(guān)鍵層的定義和特征 ............................................................................................. 24 岱河礦煤層覆巖中的關(guān)鍵層分析 ......................................................................... 25 工作面初采期間頂板冒落規(guī)律 .................................................................................... 25 直接頂?shù)某醮慰迓? ................................................................................................. 25 老頂?shù)某醮慰迓? ..................................................................................................... 25 工作面正常推采期間頂板冒落規(guī)律 ............................................................................ 26 關(guān)鍵層 1 破斷前 ..................................................................................................... 26 關(guān)鍵層 1 破斷后 ..................................................................................................... 28 關(guān)鍵層 2 破斷后 ..................................................................................................... 31 小結(jié) ................................................................................................................................ 34 4 采空區(qū)頂板冒落的關(guān)鍵層理論分析 .................................................................................. 36 煤層頂板覆巖采動(dòng)裂隙分布特征 ................................................................................ 36 煤層頂板覆巖采動(dòng)裂隙分布 ................................................................................. 36 “O”形圈的形成過(guò)程 ............................................................................................. 36 裂隙帶高度的確定 ........................................................................................................ 37 關(guān)鍵層理論 ............................................................................................................. 37 關(guān)鍵層上的載荷 ..................................................................................................... 38 關(guān)鍵層、巖層組合及離層確定 ............................................................................. 39 頂板巖層破斷巖層裂隙 ......................................................................................... 40 經(jīng)驗(yàn)公式 ................................................................................................................. 40 綜合分析 ................................................................................................................. 41 小結(jié) ................................................................................................................................ 43 5 工作面覆巖冒落規(guī)律的實(shí)測(cè)研究 ...................................................................................... 44 工作面覆巖破壞與礦壓規(guī)律觀測(cè)方案 ........................................................................ 44 觀測(cè)目的 ......................................................................