【正文】 寶成線下行 K395+880～K401+872 危巖體綜合整治工程 1 標楊家灣隧道進口及平導瓦斯專項施工方案 編制： 審核： 批準： 中鐵隧道集團有限公司寶 成 線 K400 綜 合 整 治 工 程 1 標 項 目 經(jīng) 理 部二〇一三年三月二十五日1 / 96目 錄 .................................................................................................................................4 .................................................................................................................................4 隧道概況 ...........................................................................................................................4 地質情況 ...........................................................................................................................5 水文地質條件 .....................................................................................................................6 ...........................................................................................................................6 ....................................................................................................................8 超前支護 ...........................................................................................................................8 開挖 ..................................................................................................................................8 爆破 ..................................................................................................................................9 出碴運輸 ...........................................................................................................................9 初期支護 ...........................................................................................................................9 防排水施工 ......................................................................................................................10 襯砌鋼筋施工 ...................................................................................................................11 襯砌混凝土施工 ...............................................................................................................115 監(jiān)控量測 ...............................................................................................................................14 ...............................................................................................................................15 接地保護系統(tǒng) ...................................................................................................................15 設備檢漏繼電器 ...............................................................................................................15 防雷接地 .........................................................................................................................16 備用電源 .........................................................................................................................16 電氣系統(tǒng)防爆性能的檢查和處置 ........................................................................................17 低壓電纜的選用 ...............................................................................................................17 電纜的敷設 ......................................................................................................................17 照明燈具的選用 ...............................................................................................................17 使用安全電壓 ...................................................................................................................17 洞內(nèi)電氣設備設置原則 ....................................................................................................17 電工及用電人員的要求 ....................................................................................................182 / 96 電氣設備的使用和維護 ....................................................................................................18 機電設備及供配電系統(tǒng)安全技術措施 ................................................................................19 防止出現(xiàn)電火花措施 .......................................................................................................207．洞口防雷（爆）設施 ............................................................................................................228 機械設備配置及改裝 ...............................................................................................................22 改裝機械設備匯總表 .........................................................................................................22 改裝措施 .........................................................................................................................229 煤系地層超 前地質預報 ...........................................................................................................2810 瓦斯檢測與監(jiān)測 ....................................................................................................................31 瓦斯監(jiān)測的內(nèi)容 ..............................................................................................................31 瓦斯監(jiān)測方法和儀器設備的確定 ......................................................................................31 瓦斯檢測及監(jiān)測地點 .......................................................................................................33 安全監(jiān)測系統(tǒng)布置設計 ....................................................................................................34 儀器校驗與維護 ..............................................................................................................39 瓦斯監(jiān)測資源配置 ..........................................................................................................4411 隧道施工通風 .......................................................................................................................46 通風方案 ........................................................................................................................46 需風量計算 .................................................................................................................46 通風方式確定及風機供風量 ......