【正文】 ... 20 2 礦井儲(chǔ)量、生產(chǎn)能力及服務(wù)年限 ................................................................................. 23 井田境界 .......................................................................................................... 23 井田儲(chǔ)量 .......................................................................................................... 23 礦井一期地質(zhì)資源量 .............................................................................. 23 礦井一期工業(yè)儲(chǔ)量 ................................................................................. 24 礦井一期設(shè)計(jì)儲(chǔ)量 ................................................................................. 25 礦井一期設(shè)計(jì)可采儲(chǔ)量 .......................................................................... 26 礦井生產(chǎn)能力及服務(wù)年限 ................................................................................. 27 工作制度 ............................................................................................... 27 設(shè)計(jì)生產(chǎn)能力 ........................................................................................ 27 服務(wù)年限 ............................................................................................... 30 3 井田開拓 .................................................................................................................... 31 概 述 ...................................................................................................................... 31 井田開拓方式及井口位置選擇的主要原則 .............................................. 31 ....................................................................... 31 井田開拓 .......................................................................................................... 33 井田開拓方式 ........................................................................................ 33 礦井開拓方案 ........................................................................................ 34 井筒數(shù)目 ............................................................................................... 38 水平劃分 ............................................................................................... 38 煤層分組 ............................................................................................... 39 大巷布置 ............................................................................................... 39 煤層開采順序 ........................................................................................ 39 采區(qū)劃分與接替 ..................................................................................... 39 井筒特征 .......................................................................................................... 40 井筒用途、布置及裝備 .......................................................................... 40 井壁結(jié)構(gòu)及井筒施工方法 ....................................................................... 43 井底車場(chǎng)及硐室 ............................................................................................... 43 井底車場(chǎng)布置 ........................................................................................ 43 井底車場(chǎng)主要硐室 ................................................................................. 43 井底車場(chǎng)主要巷道和硐室支護(hù)方式 ......................................................... 45 開采順序及采區(qū)、采煤工作面的配置 ................................................................ 45 煤層分組和開采順序 .............................................................................. 45 保證年產(chǎn)量的同采采區(qū)數(shù)和工作面數(shù) ..................................................... 45 井巷工程量和建井工期 ..................................................................................... 46 建井工期 ............................................................................................... 46 井巷工程量 ............................................................................................ 47 4 采煤方法 .................................................................................................................... 48 采煤方法的選擇 ............................................................................................... 49 采區(qū)巷道布置 ........................................................................................ 52 采區(qū)車場(chǎng)和硐室 ..................................................................................... 54 巷道掘進(jìn)及機(jī)械化 ................................................................................. 54 采區(qū)生產(chǎn)系統(tǒng) ........................................................................................ 57 采煤工藝設(shè)計(jì) ................................................................................................... 57 回采工作面參數(shù)的確定 .......................................................................... 57 主要采煤設(shè)備選型 ................................................................................. 58 工作面生產(chǎn)能力計(jì)算 .............................................................................. 65 工作面接替順序 ..................................................................................... 66 回采工序及工序安排 .............................................................................. 68 5 通風(fēng)與安全 ................................................................................................................. 70 礦井通風(fēng)系統(tǒng)的選擇 ............................................................................................... 70 礦井通風(fēng)系統(tǒng) ........................................................................................ 70 風(fēng)井?dāng)?shù)目及服務(wù)范圍 .............................................................................. 70 掘進(jìn)通風(fēng)及硐室通風(fēng) .............................................................................. 70 風(fēng)量計(jì)算及風(fēng)量分配 ........................................................................................ 73 風(fēng)量計(jì)算及分配 ..................................................................................... 73 通風(fēng)設(shè)施、 防止漏風(fēng)和降低風(fēng)阻的措施 .................................................. 77 反風(fēng)方式及反風(fēng)設(shè)施 .............................................................................. 78 全礦通風(fēng)阻力計(jì)算 ...........