【正文】 ................................................................................................... 24 采區(qū)內煤層開采順序 .............................................................................. 24 采區(qū)進、回風上山選擇及回采工作面風流方向確定 .......................... 24 局部通風設計 ................................................................................................ 26 局部通風設計原則 .................................................................................. 26 局部通風方法 .......................................................................................... 27 風筒的選擇 .............................................................................................. 27 通風機的選擇 ........................................................................................... 28 局部通風的安全措施 .............................................................................. 32 5 礦井通風設計 ....................................................................................................... 35 概況 ................................................................................................................ 35 井田概況 .................................................................................................. 35 對各水平瓦斯等級變化的預計 .............................................................. 35 擬定礦井通風系統(tǒng) ........................................................................................ 35 確定礦井主要通風機的工作方法 .......................................................... 35 通風系統(tǒng)的選擇 ...................................................................................... 36 計算和分配礦井總風量 ................................................................................ 40 確定礦井通風阻力容易和困難時期的礦井總風量 .............................. 40 前期礦井風量計算 .................................................................................. 40 后期礦井風量計算 .................................................................................. 45 風量分配 .................................................................................................. 49 III 風速驗算 .................................................................................................. 50 計算井巷通風總阻力 .................................................................................... 53 繪制通風前期和后期期的網(wǎng)絡圖 .......................................................... 54 制兩個時期井巷通風阻力計算表 .......................................................... 56 礦井自然風壓 .......................................................................................... 61 計算礦井總風阻和總等積孔 ................................................................... 61 選擇礦井通風設備 ........................................................................................ 62 礦井通風設備選擇的要求 ...................................................................... 62 主要通風機的選擇 .................................................................................. 63 主要通風機參數(shù) ...................................................................................... 67 選擇電動 機 ............................................................................................... 67 概算礦井通風電費 ........................................................................................ 68 6 通風構筑物的設置 ............................................................................................... 70 通風構筑物的設置與要求 ............................................................................ 70 通風網(wǎng)絡的要求 ...................................................................................... 70 通風構筑物的要求 .................................................................................. 70 主要通風機附屬設備設置與要求風硐 ...................................................... 71 7 災害預防措施 ....................................................................................................... 73 瓦斯防治 ........................................................................................................ 73 風塵防治 ........................................................................................................ 74 井下火災預防 ................................................................................................ 75 井下水災防治 ................................................................................................ 75 結 論 ....................................................................................................................... 77 致 謝 ....................................................................................................................... 78 參考文獻 ................................................................................................................... 79 IV CONTENTS ABSTRACT ................................................................................................................ I Chapter one mining and security situation field geological feature ..................... 1 Mining area survey ............................................................................................ 1 Location and transportation......................................................................... 1 Terrain and river .......................................................................................... 1 weather conditions ...................................................................................... 2 Mine water .................................................................................................. 2 geological features ............................................................................................. 2 Geological structure .................................................................................... 2 structure ....................................................................................................... 3 coal seam ..................................................................................................... 3 Survey work .......