ICS 93.080.20 CCS P 66 四 DB51 川 省 地 方 标 准 DB51/T 2790-2021 DB5101 公路隧道竖井技术规程 Technical regulation for highway tunnel shaft 2021-08- 02 发布 四川省市场监督管理局 2021 - 09 - 01 实施 发 布 DB51/T 2790-2021 目 次 前 言 .......................................................................................................................................................... III 1 范围 ............................................................................................................................................................... 1 2 规范性引用文件 ........................................................................................................................................... 1 3 术语和定义 ................................................................................................................................................... 2 4 基本规定 ....................................................................................................................................................... 6 5 竖井工程调查与勘察 .................................................................................................................................. 8 5.1 5.2 5.3 5.4 5.5 一般规定 ................................................................................................................................................. 8 竖井工程调查 ......................................................................................................................................... 9 竖井工程工预可勘察 ............................................................................................................................. 9 竖井工程初步勘察 ................................................................................................................................. 9 竖井工程详细勘察 ............................................................................................................................... 10 6 竖井设计 ..................................................................................................................................................... 11 6.1 6.2 6.3 6.4 6.5 6.6 一般规定 ............................................................................................................................................... 11 井壁结构计算方法 ............................................................................................................................... 12 普通凿井法井筒衬砌设计 ................................................................................................................... 13 冻结凿井法井筒衬砌设计 ................................................................................................................... 17 井筒防排水设计 ................................................................................................................................... 21 井筒内隔板设计 ................................................................................................................................... 22 7 竖井施工提升与悬吊作业 ......................................................................................................................... 23 7.1 一般规定 ............................................................................................................................................... 23 7.2 提绞设备 ............................................................................................................................................... 24 7.3 凿井设备的悬吊与运行 ....................................................................................................................... 25 8 竖井掘进与衬砌 ......................................................................................................................................... 28 8.1 8.2 8.3 8.4 8.5 8.6 8.7 一般规定 ............................................................................................................................................... 28 竖井施工测量 ....................................................................................................................................... 29 锁口施工 ............................................................................................................................................... 30 表土层施工 ........................................................................................................................................... 30 基岩施工 ............................................................................................................................................... 30 冻结法施工 ....................................................