内容简介
DB51/T 2790-2021公路隧道竖井技术规程
Technical regulation for highway tunnel shaft
2021-09-01实施
2021-08-02发布
目 次
前 言 ..........................................................................................................................................................1
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 一般规定 ................................................................................................................................................. 8
5.2 竖井工程调查 ......................................................................................................................................... 9
5.3 竖井工程工预可勘察 ............................................................................................................................. 9
5.4 竖井工程初步勘察 ................................................................................................................................. 9
5.5 竖井工程详细勘察 ............................................................................................................................... 10
6 竖井设计 ..................................................................................................................................................... 11
6.1 一般规定 ............................................................................................................................................... 11
6.2 井壁结构计算方法 ............................................................................................................................... 12
6.3 普通凿井法井筒衬砌设计 ................................................................................................................... 13
6.4 冻结凿井法井筒衬砌设计 ................................................................................................................... 17
6.5 井筒防排水设计 ................................................................................................................................... 21
6.6 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 一般规定 ............................................................................................................................................... 28
8.2 竖井施工测量 ....................................................................................................................................... 29
8.3 锁口施工 ............................................................................................................................................... 30
8.4 表土层施工 ........................................................................................................................................... 30
8.5 基岩施工 ............................................................................................................................................... 30
8.6 冻结法施工 ........................................................................................................................................... 32
8.7 井筒注浆 ............................................................................................................................................... 35
9 竖井工程质量检验与验收 ......................................................................................................................... 37
9.1 一般规定 ............................................................................................................................................... 37
9.2 掘进工程 ............................................................................................................................................... 38
9.3 混凝土结构支护工程 ........................................................................................................................... 38
9.4 冻结施工工程 ....................................................................................................................................... 39
9.5 防治水工程 ........................................................................................................................................... 41
10 竖井施工辅助作业与环境控制 ............................................................................................................... 41
10.1 信号、通信及照明............................................................................................................................. 41
10.2 施工排水与供水................................................................................................................................. 42
10.3 施工供高压风..................................................................................................................................... 43
10.4 施工通风............................................................................................................................................. 44
10.5 施工供电与混凝土搅拌..................................................................................................................... 44
10.6 作业环境控制..................................................................................................................................... 45
附 录 A （资料性） 混凝土井壁内力及承载力计算 ........................................................................... 46
附 录 B （资料性） 井架（塔）影响段井壁计算 ............................................................................... 53
附 录 C （资料性） 竖井施工机械化配置 ........................................................................................... 59
附 录 D （资料性） 竖井提绞设备选型及验算 ................................................................................... 62
附 录 E （资料性） 竖井施工质量检验工程划分................................................................................ 67