宝成线下行K395+880～K401+872危岩体综合整治工程1标杨家湾隧道进口及平导瓦斯专项施工方案编制：审核：批准：中铁隧道集团有限公司宝成线K400综合整治工程1标项目经理部二〇一三年三月二十五日目录1.编制依据.................................................................................................................................42.工程概况.................................................................................................................................42.1隧道概况............................................................................................................................42.2地质情况............................................................................................................................52.3水文地质条件.....................................................................................................................63.施工组织机构...........................................................................................................................64.主要工序施工方法....................................................................................................................84.1超前支护............................................................................................................................84.2开挖..................................................................................................................................84.3爆破..................................................................................................................................94.4出碴运输............................................................................................................................94.5初期支护............................................................................................................................94.6防排水施工......................................................................................................................104.7衬砌钢筋施工...................................................................................................................114.8衬砌混凝土施工................................................................................................................115监控量测................................................................................................................................146.施工用电...............................................................................................................................156.1接地保护系统...................................................................................................................156.2设备检漏继电器................................................................................................................156.3防雷接地..........................................................................................................................166.4备用电源..........................................................................................................................166.5电气系统防爆性能的检查和处置........................................................................................176.6低压电缆的选用................................................................................................................176.7电缆的敷设...................................
