【正文】 ..................27第 4 章 礦床開拓 ......................................................................................................28 礦山開拓系統(tǒng)現(xiàn)狀 .......................................................................................................................28 階段高度的確定 ...........................................................................................................................28 階段高度 ...............................................................................................................................28 按階段開拓和采準(zhǔn)時(shí)間計(jì)算出階段高度 ...........................................................................28 礦山生產(chǎn)能力 ...............................................................................................................................29 礦山工作制度 .......................................................................................................................29 礦山生產(chǎn)能力 .......................................................................................................................29 礦山年產(chǎn)量的校核 .......................................................................................................................30 礦山設(shè)計(jì)年產(chǎn)量 ...................................................................................................................30 按合理開采順序同時(shí)回采礦塊數(shù)驗(yàn)證礦山生產(chǎn)能力 .......................................................30 按礦床開采年下降深度確定驗(yàn)證礦山年產(chǎn)量 ...................................................................31 按及時(shí)準(zhǔn)備新階段驗(yàn)證礦山年產(chǎn)量 ...................................................................................31 礦山服務(wù)年限 ...............................................................................................................................32 開拓方案的選擇 ...........................................................................................................................33 選擇依據(jù) ...............................................................................................................................33 開拓方案考慮的問題 ...........................................................................................................33 提出開拓方案 .......................................................................................................................34 主副井位置的確定 .......................................................................................................................37 主井位置的確定 ...................................................................................................................37 2副盲斜井位置的確定 ........................................................................................................37 盲斜井聯(lián)合開拓方案的說明 .......................................................................................................37 開拓中段劃分 .......................................................................................................................37 采用的開拓的設(shè)計(jì) ...............................................................................................................38 各種硐室的確定 ....................................................................................................................41 開拓系統(tǒng)描述 ........................................................................................................................44 開拓基建工程進(jìn)度計(jì)劃編制 .......................................................................................................45 根據(jù)井巷計(jì)算所需的開拓工程量 ........................................................................................45第 5 章 采礦方法 ........................................................................................................47 礦床開采技術(shù)條件 .......................................................................................................................47 礦山現(xiàn)有的采礦方法評述 ...........................................................................................................47 礦山現(xiàn)行的采礦方法 ............................................................................................................47 主要論述：水壓支柱護(hù)頂壁式崩落法 ................................................................................48 礦柱回收及空區(qū)處理 ............................................................................................................49 現(xiàn)有的采礦方法存在的問題及改進(jìn)問題 ............................................................................49 采礦方法選擇 ...............................................................................................................................51 采礦方法初選 ........................................................................................................................51 采礦方法技術(shù)經(jīng)濟(jì)綜合比較 ................................................................................................52 礦塊的構(gòu)成要素 ...........................................................................................................................53 礦塊的布置 ............................................................................................................................53 階段高度和和礦塊長度 ........................................................................................................53 運(yùn)輸水平布置 ........................................................................................................................53 礦石漏斗 ................................................................................................................................54 安全道 ....................................................................................................................................54 回采工作與設(shè)計(jì) ...........................................................................................................................54 采準(zhǔn)切割 ................................................................................................................................54 回采方式、工作面形式和回采工藝 ....................................................................................54 鑿巖爆破工作 ....................................................................................................