内容简介
DB42/T 1498-2019公路工程地质钻探技术规程
Technical specification for geological drilling of highway engineering
（报批稿）
2019-04-28实施
2019-03-28发布
目 次
前言 ................................................................................1
引言 ..................................................................................1
1 范围 .................................................................................1
2 规范性引用文件 .......................................................................1
3 术语与定义和符号 .....................................................................1
3.1 术语与定义 .......................................................................1
3.2 符号 .............................................................................2
4 总则 .................................................................................2
5 钻探准备工作 .........................................................................3
5.1 作业指导书 .......................................................................3
5.2 孔位测量 .........................................................................3
5.3 钻机选型 .........................................................................3
5.4 场地的三通一平 ...................................................................4
5.5 钻探设备安装 .....................................................................4
6 钻进方法 .............................................................................4
6.1 一般规定 .........................................................................4
6.2 回转钻进 .........................................................................5
6.3 冲击钻进 .........................................................................6
6.4 冲击回转钻进 .....................................................................6
7 常规钻探 .............................................................................6
7.1 一般规定 .........................................................................6
7.2 黏性土、粉土地层 .................................................................6
7.3 砂土地层 .........................................................................7
7.4 碎石土地层 .......................................................................7
7.5 岩石地层 .........................................................................7
7.6 不良地质路段 .....................................................................7
7.7 特殊性岩土 .......................................................................8
7.8 堤防钻探 .........................................................................9
8 水上钻探 .............................................................................9
8.1 一般规定 .........................................................................9
8.2 钻探与成孔 .......................................................................9
9 水平及斜孔钻探 ......................................................................10
9.1 一般规定 ........................................................................10
9.2 钻探与成孔 ......................................................................10
10 水文地质钻探 .......................................................................11
10.1 一般规定 .......................................................................11
10.2 钻探与成孔 .....................................................................11
10.3 简易水文地质观测 ............................................................... 12
11 护壁堵漏........................................................................... 12
11.1 一般规定....................................................................... 12
11.2 护壁堵漏方法 ................................................................... 12
12 钻探质量........................................................................... 13
12.1 一般规定....................................................................... 13
12.2 钻孔弯曲与孔深 ................................................................. 14
12.3 岩芯采取....................................................................... 14
12.4 岩土水试样的采取 ............................................................... 15
12.5 地下水位量测 ................................................................... 15
12.6 测试钻孔要求 ................................................................... 16
12.7 钻探现场记录 ................................................................... 16
12.8 封孔回填....................................................................... 17
13 钻探安全要求 ....................................................................... 17
13.1 一般规定....................................................................... 17
13.2 场地安全要求 ................................................................... 18
13.3 人员安全要求 ................................................................... 18
13.4 钻探安全操作 ................................................................... 18
13.5 自然灾害防护 ................................................................... 18
13.6 既有公路钻探 ................................................................... 19
13.7 水上钻探安全要求 ............................................................... 19
13.8 孔内事故预防和处理 ............................................................. 19
附录 A（规范性附录） 岩土可钻性分级 .................................................. 21
附录 B（规范性附录） 不同等级土试样的取样工具适宜性................................... 22
附录 C（规范性附录） 取芯钻具种类 .................................................... 24
附录 D（资料性附录） 回转钻进参数 .................................................... 25
附录 E（规范性附录） 泥浆性能指标及测定方法........................................... 29
附录 F（资料性附录） 钻孔现场记录表 .................................................. 30
附录 G（资料性附录） 钻孔岩芯编录表 .................................................. 31
本规程用词说明........................................................................ 32