隧道洞身开挖专项施工方案（89页）VIP专享VIP免费

目录1编制依据、编制原则及编制范围......................................11.1编制依据.......................................................11.2编制原则......................................................11.3编制范围......................................................22工程概况..........................................................22.1新屋隧道简介...................................................22.2工程技术标准...................................................72.3工程地质条件...................................................72.3.1地形地貌...............................................72.3.2地质构造...............................................72.3.3地层岩性...............................................72.3.4水文地质..............................................103施工组织部署.....................................................103.1人员配备......................................................103.2机械配备......................................................123.3材料准备......................................................133.4隧道施工辅助作业..............................................144开挖工期安排.....................................................165隧道洞身开挖施工方案.............................................165.1开挖方案概述..................................................165.2主要开挖工法..................................................175.2.1三台阶留核心土法.......................................175.2.2单侧壁导坑法...........................................205.2.3双侧壁导坑法...........................................225.2.4环形导坑留核心土法.....................................245.2.5上下断面正台阶法.......................................266钻爆施工.........................................................276.1钻爆设计.....................................................276.2炮眼布置......................................................316.3钻爆作业......................................................346.3.1测量................................................346.3.2定位开眼.............................................356.3.3钻孔................................................356.3.4装药.................................................356.3.5堵塞.................................................356.3.6瞎炮处理.............................................356.4隧道光面爆破..................................................366.4.1工艺控制要点.........................................366.4.2施工操作要求.........................................366.4.3超欠挖控制...........................................386.5出碴运输...................................................386.5.1装渣作业.............................................386.5.2运输作业.............................................386.5.3卸渣作业.............................................397超前及初期支护...................................................407.1超前小导管....................................................407.2锚杆..........................................................407.3钢筋网........................................................417.4钢支撑........................................................417.5锁脚锚杆......................................................417.6喷射砼........................................................428洞口浅埋段、小净距段及洞身浅埋段施工.........