ICS 93.020 CCS P 10 湖 DB42 DB42/T 169-2022 北 省 地 方 标 准 DB42/T 169—2022 代替 DB42/ 169-2003 岩土工程勘察规程 Code of practice for investigation of geotechnical engineering 2022-08-25 实施 2022-04-25 发布 湖北省住房和城乡建设厅 湖北省市场监督管理局 联合发布 DB42/T 169-2022 目 次 前言 ................................................................................... V 1 范围 ................................................................................ 1 2 规范性引用文件 ...................................................................... 1 3 术语和定义 .......................................................................... 1 4 符号 ................................................................................ 4 5 总则 ................................................................................ 5 6 基本规定 ............................................................................ 6 7 勘察阶段、勘察等级和勘察纲要 ........................................................ 6 8 9 10 7.1 勘察阶段 ........................................................................ 6 7.2 勘察等级 ........................................................................ 7 7.3 勘察纲要 ........................................................................ 7 岩土分类 ............................................................................ 8 8.1 岩石的分类和鉴定 ................................................................ 8 8.2 土的分类和鉴定 .................................................................. 9 各类工程的勘察基本要求 ............................................................. 13 9.1 一般规定 ....................................................................... 13 9.2 房屋建筑工程 ................................................................... 13 9.3 市政工程 ....................................................................... 15 9.4 山区工程 ....................................................................... 23 9.5 垃圾填埋场 ..................................................................... 25 9.6 桩基工程 ....................................................................... 27 9.7 地基处理 ....................................................................... 28 9.8 基坑工程 ....................................................................... 30 9.9 边坡工程 ....................................................................... 33 不良地质作用与地质灾害 ............................................................ 38 10.1 一般规定 ...................................................................... 38 10.2 场地和地基的地震效应 .......................................................... 38 10.3 岩溶 .......................................................................... 40 10.4 滑坡 .......................................................................... 44 10.5 危岩和崩塌 .................................................................... 46 10.6 泥石流 ........................................................................ 47 10.7 采空区 ........................................................................ 48 10.8 地面沉降 ...................................................................... 49 11 特殊性岩土 ........................................................................ 51 11.1 软土 .......................................................................... 51 11.2 膨胀土 ........................................................................ 52 I DB42/T 169-2022 11.3 填土 .......................................................................... 54 11.4 红黏土 ........................................................................ 55 11.5 混合土 ........................................................................ 55 11.6 风化岩与残积土 ................................................................ 56 11.7 污染土 ........................................................................ 57 12 地下水 ............................................................................ 58 12.1 地下水的勘察要求 .............................................................. 58 12.2 水文地质参数的测定 ............................................................ 58 12.3 地下水作用的评价 .............................................................. 59 13 工程地质测绘和调查 ................................................................ 60 14 勘探和取样 ........................................................................ 62 14.1 一般规定 ...................................................................... 62 14.2 勘探点测量 .................................................................... 62 14.3 钻探 ..............................................................