内容简介
DB63/T 1674-2018多年冻土区 公路隧道技术规范
2018-09-25实施
2018-06-25发布
目 次
前言 ............................................................................... 1
1 范围 .............................................................................. 1
2 规范性引用文件 .................................................................... 1
3 术语与定义 ........................................................................ 1
3.1 ................................................................................ 1
高海拔高寒地区 ..................................................................... 1
3.2 ................................................................................ 1
冻土 ............................................................................... 1
3.3 ................................................................................ 1
多年冻土 ........................................................................... 1
3.4 ................................................................................ 2
多年冻土上限 ....................................................................... 2
3.5 ................................................................................ 2
多年冻土下限 ....................................................................... 2
3.6 ................................................................................ 2
最大冻土深度 ....................................................................... 2
3.7 ................................................................................ 2
冻融作用 ........................................................................... 2
3.8 ................................................................................ 2
冻胀作用 ........................................................................... 2
3.9 ................................................................................ 2
冻胀力 ............................................................................. 2
3.10 ............................................................................... 2
热棒 ............................................................................... 2
4 建设条件调查 ...................................................................... 2
4.1 资料搜集 ...................................................................... 2
4.2 地形与地质调查 ................................................................ 3
4.3 气象调查 ...................................................................... 3
4.4 工程环境调查 .................................................................. 3
5 隧道总体设计 ...................................................................... 3
5.1 一般规定 ...................................................................... 3
5.2 隧道位置选择 .................................................................. 4
5.3 隧道线形设计 .................................................................. 4
5.4 隧道结构形式 .................................................................. 5
6 建筑限界与内轮廓 .................................................................. 6
6.1 一般规定 ...................................................................... 6
6.2 建筑限界 ...................................................................... 6
6.3 内轮廓 ........................................................................ 6
7 支护结构设计与施工 ................................................................ 6
7.1 一般规定 ...................................................................... 6
7.2 荷载及计算 .................................................................... 7
7.3 初期支护与辅助工程措施施工 .................................................... 8
7.4 二次衬砌施工 .................................................................. 8
8 防排水设计与施工 .................................................................. 8
8.1 防排水基本原则 ................................................................ 8
8.2 洞身防水设计与施工 ............................................................ 9
8.3 洞身排水设计与施工 ............................................................ 9
9 隧道开挖 ......................................................................... 10
9.1 一般规定 ..................................................................... 10
9.2 开挖方法 ..................................................................... 11
9.3 超欠挖控制 ................................................................... 11
10 隧道防寒保温设计与施工 .......................................................... 11
10.1 一般规定 .................................................................... 11
10.2 衬砌保温 .................................................................... 11
10.3 出水口保温 .................................................................. 11
10.4 防雪棚洞 .................................................................... 12
11 冻土隧道施工机械配套技术 ........................................................ 12
11.1 一般规定 .................................................................... 12
11.2 动力机械配套技术 ............................................................ 12
11.3 掘进及支护机械配套技术 ...................................................... 12
11.4 装卸运输机械配套技术 ........................................................ 13
11.5 通风机械配套技术 ............................................................ 13
11.6 其他配属设备 ................................................................ 13
附录 A（资料性附录） 冻土隧道建筑限界及内轮廓 ....................................... 14
附录 B（规范性附录） 冻胀力计算..................................................... 19
附录 C（规范性附录） 特殊冻土地层施工 ............................................... 20
C.1 洞口冻土边仰坡 ............................................................... 20
C.2 洞口冻土浅埋段 ............................................................... 20
C.3 洞内厚层地下冰 ............................................................... 20
本标准按照 GB/T 1.1-2009给出的规则编写。
本标准由青海省交通运输厅提出并归口。