内容简介
DB11/T 1726-2020市政基础设施岩土工程勘察规范
Code of geotechnical investigation for municipal infrastructure projects
2020-03-31发布
2020-10-01实施
目 次
1 总则...................................................................................................................................................... 1
2 术语和符号......................................................................................................................................... 2
2.1 术语 ............................................................................................................................................. 2
2.2 符号 ............................................................................................................................................. 3
3 基本规定............................................................................................................................................. 4
4 岩土分类............................................................................................................................................. 7
5 可行性研究勘察 ............................................................................................................................. 12
5.1 一般规定 ................................................................................................................................... 12
5.2 勘察要求 ................................................................................................................................... 12
6 初步勘察........................................................................................................................................... 14
6.1 一般规定 ................................................................................................................................... 14
6.2 道路工程 ................................................................................................................................... 14
6.3 桥涵工程 ................................................................................................................................... 15
6.4 隧道工程 ................................................................................................................................... 16
6.5 综合管廊工程 ........................................................................................................................... 17
6.6 室外管道工程 ........................................................................................................................... 18
6.7 给排水厂站工程 ....................................................................................................................... 19
6.8 城市绿地工程 ........................................................................................................................... 19
6.9 生活垃圾填埋场工程 ............................................................................................................... 20
6.10 堤岸工程 ................................................................................................................................. 22
7 详细勘察........................................................................................................................................... 24
7.1 一般规定 ................................................................................................................................... 24
7.2 道路工程 ................................................................................................................................... 24
7.3 桥涵工程 ................................................................................................................................... 26
7.4 隧道工程 ................................................................................................................................... 28
7.5 综合管廊工程 ........................................................................................................................... 30
7.6 室外管道工程 ........................................................................................................................... 31
7.7 给排水厂站工程 ....................................................................................................................... 32
7.8 城市绿地工程 ........................................................................................................................... 34
7.9 生活垃圾填埋场工程 ............................................................................................................... 35
7.10 堤岸工程 ................................................................................................................................. 37
8 工法勘察........................................................................................................................................... 40
8.1 一般规定 ................................................................................................................................... 40
8.2 明挖法 ....................................................................................................................................... 40
8.3 暗挖法 ....................................................................................................................................... 41
8.4 顶管法及定向钻法 ................................................................................................................... 43
9 地下水................................................................................................................................................ 45
9.1 一般规定 ................................................................................................................................... 45
9.2 水文地质参数测定 ................................................................................................................... 45
9.3 地下水评价 ............................................................................................................................... 47
10 场地、地基的地震效应.............................................................................................................. 49
10.1 一般规定 ................................................................................................................................. 49
10.2 勘察要求 ................................................................................................................................. 49
10.3 抗震评价 ................................................................................................................................. 50
11 工程周边环境专项调查.............................................................................................................. 54
11.1 一般规定 ................................................................................................................................. 54
11.2 调查要求 ................................................................................................................................. 54
11.3 成果资料 ................................................................................................................................. 55
12 岩土参数统计与地基承载力 .................................................................................................... 56
12.1 岩土参数统计分析 ................................................................................................................. 56
12.2 地基承载力 ............................................................................................................................. 57
13 勘察报告......................................................................................................................................... 61
附录 A 岩土试验项目....................................................................................................................... 63
附录 B 岩石分类................................................................................................................................ 64
附录 C 碎石土的密实度 .................................................................................................................. 65
附录 D 孔隙水压力测定方法和适用条件 .................................................................................. 66
本规范用词说明 .................................................................................................................................... 67
引用标准名录......................................................................................................................................... 68
附：条文说明......................................................................................................................................... 69