【正文】 ................. 10 礦井設(shè)計(jì)儲(chǔ)量 ..................................................................................................................11 永久煤柱損失量 ....................................................................................................11 礦井設(shè)計(jì)儲(chǔ)量 ....................................................................................................... 12 礦井可采儲(chǔ)量 ................................................................................................................. 12 工業(yè)廣場保護(hù)煤柱煤量 ....................................................................................... 12 主要井巷保護(hù)煤柱煤量 ....................................................................................... 13 礦井可采儲(chǔ)量 ....................................................................................................... 13 3 礦井工作制度、設(shè)計(jì)生產(chǎn)能力及服務(wù)年限 ........................................................................... 15 礦井工作制度 ................................................................................................................. 15 礦井設(shè)計(jì)生產(chǎn)能力及服務(wù)年限 ..................................................................................... 15 確定依據(jù) ............................................................................................................... 15 礦井設(shè)計(jì)生產(chǎn)能力 ............................................................................................... 15 礦井服務(wù)年限 ....................................................................................................... 15 井型校核 ............................................................................................................... 16 第 II 頁 4 井田開拓 ................................................................................................................................... 17 井田開拓的基本問題 ...................................................................................................... 17 確定井筒形式、數(shù)目、位置及坐標(biāo) .................................................................... 17 工業(yè)場地的位置 .................................................................................................... 19 開采水平的確定及帶區(qū)、采區(qū)的劃分 ................................................................ 19 主要開拓巷道 ........................................................................................................ 20 開拓方案比較 ........................................................................................................ 20 礦井基本巷道 .................................................................................................................. 28 井筒 ........................................................................................................................ 28 井底車場 ................................................................................................................ 30 大巷 ........................................................................................................................ 33 5 準(zhǔn)備方式 —帶區(qū)巷道布置 ....................................................................................................... 36 煤層地質(zhì)特征 .................................................................................................................. 36 帶區(qū)位 置 ................................................................................................................ 36 帶區(qū)煤層特征 ....................................................................................................... 36 煤層頂?shù)装鍘r石構(gòu)造情況 ................................................................................... 36 水文地質(zhì) ............................................................................................................... 36 地質(zhì)構(gòu)造 ............................................................................................................... 36 帶區(qū)巷道布置及生產(chǎn)系統(tǒng) ............................................................................................. 36 帶區(qū)準(zhǔn)備方式的確定 ........................................................................................... 36 帶區(qū)巷道布置 ....................................................................................................... 37 帶區(qū)生產(chǎn)系統(tǒng) ....................................................................................................... 37 帶區(qū)內(nèi)巷道掘進(jìn)方法 ........................................................................................... 42 帶區(qū)生產(chǎn)能力及采出率 ....................................................................................... 42 帶區(qū)車場選型設(shè)計(jì) ......................................................................................................... 43 6 采煤方法 ................................................................................................................................... 44 采煤工藝方式 .................................................................................................................. 44 帶區(qū)煤層特征及地質(zhì)條件 ................................................................................... 44 確定采煤工藝方式 ............................................................................................... 44 回采工作面參數(shù) ................................................................................................... 45 采煤工作面破煤、裝煤方式 ............................................................................... 46 采煤工作面支護(hù)方式 ........................................................................................... 49 端頭支護(hù)及超前支護(hù)方式 .................................................................................... 51 各工藝過程注意事項(xiàng) ............................................................................................ 52 回采工作面正規(guī)循環(huán)作業(yè) .................................................................................... 53 回采巷道布置 .................................................................................................................. 55 回采巷道布置方式 ..........................................