【正文】 ............................................................................................................... 20 4 井田開拓 ........................................................................................................................................................................................... 21 井田開拓的基本問題 ............................................................................................................................................................ 21 井筒形式及數(shù)目 ............................................................................................................................................................. 21 工業(yè)廣場及井口位置的確定 ...................................................................................................................................... 22 開采水平的確定及采區(qū)劃分 ...................................................................................................................................... 23 開采水平布置及井底車場選型 .................................................................................................................................. 24 采區(qū)劃分及其布置 ........................................................................................................................................................ 25 開拓方案比較 .......................................................................................................................................................................... 26 提出方案 ........................................................................................................................................................................... 26 技術(shù)比較 ........................................................................................................................................................................... 28 開拓方案經(jīng)濟比較表 ..................................................................................................................................................... 29 綜合比較 .......................................................................................................................................................................... 31 第 頁 共 120 頁 2 礦井基本巷道 .......................................................................................................................................................................... 31 井筒 .................................................................................................................................................................................... 32 井底車場 ........................................................................................................................................................................... 35 主要開拓巷道 .................................................................................................................................................................. 36 5 采區(qū)巷道布置與采區(qū)生產(chǎn)系統(tǒng) .................................................................................................................................................. 39 采區(qū)概況 ................................................................................................................................................................................... 39 采區(qū)位置、邊界及范圍 ................................................................................................................................................ 39 采區(qū)地質(zhì)和煤質(zhì)情況 ..................................................................................................................................................... 39 采區(qū)生產(chǎn)能力、儲量及服務(wù)年限 ............................................................................................................................. 39 采區(qū)巷道布置 .......................................................................................................................................................................... 39 區(qū)段劃分 .......................................................................................................................................................................... 39 采 區(qū)上山布置 ................................................................................................................................................................. 40 采區(qū)車場布置 ................................................................................................................................................................. 41 采區(qū)硐室簡介 ................................................................................................................................................................. 44 采區(qū)工作面接續(xù) ............................................................................................................................................................. 45 采區(qū)準備 .................................................................................................................................................................................. 45 采區(qū)巷道的準備順序 .................................................................................................................................................... 45 采區(qū)巷道的斷面圖及支護方式 .................................................................................................................................. 46 6 采煤方法 ........................................................................................................................................................................................... 48 采煤方法和回采工藝 ............................................................................................................................................................. 48 選擇采煤方法 .................................................................................................................................................................. 48 采煤工作面工藝設(shè)計 ..............................................................