GB50734-2012：冶金工业建设钻探技术规范

本规范共分11章和4个附录,主要内容有:总则,术语和符号,基本规定,钻探准备工作,工程地质钻探,水文地质钻探与水井施工,基桩孔和成槽施工,特种钻探,冲洗介质与护壁堵漏,钻探质量,钻探设备使用、维护与拆迁等。

GB50734-2012······1

1 总则······13

2 术语和符号······14

2.1 术语······14

2.2 符号······18

3 基本规定······19

4 钻探准备工作······21

4.1 编制钻探施工······21

4.2 施工场地准备······21

4.3 基台与钻塔安······22

4.4 钻探设备安装······23

4.5 附属设备安装······23

4.6 准备工作检查······24

5 工程地质钻探······25

5.1 钻孔结构设计与钻进方法选择······25

5.2 冲击钻进······26

5.3 回转钻进······26

5.4 地下水位观测······32

5.5 钻孔止水与封孔······32

6 水文地质钻探与水井施工······34

6.1 钻孔结构设计与钻进方法选择······34

6.2 冲击钻进······36

6.3 回转钻进······37

6.4 气动冲击回转钻进······42

6.5 水文地质地下水位观测······43

6.6 成井工艺······43

7 基桩孔和成槽施工······46

7.1 一般规定······46

7.2 冲击钻进······46

7.3 冲抓锥钻进······47

7.4 大直径回转钻进······47

7.5 潜水电钻钻进······49

7.6 螺旋钻进······50

7.7 旋挖钻进······50

7.8 钻孔扩底钴进······51

7.9 钻孔挤扩支盘施工······51

7.10 成槽施工······52

7.11 清孔······53

8 特种钻探······54

8.1 定向钻进······54

8.2 岩心定向钻进······55

8.3 水平孔钻进······55

8.4 水上钻探······57

8.5 孔内爆破······60

9 冲洗介质与护壁堵漏······62

9.1 冲洗介质······62

9.2 护壁堵漏······64

10 钻探质量······66

10.1 岩(土）心、土试样与水试样的采取······66

10.2 勘察孔孔深校正与钻孔弯曲度······69

10.3 供水管井成井质晕······70

10.4 基桩孔成孔质量······70

10.5 成槽质量······71

10.6 原始报表······54

10.7 终孔验收与资料提交······72

11 钻探设备使用、维护与拆迁······73

11.1 钻探设备使用与维护······73

11.2 钻探设备拆迁······73

附录A 岩心钻探岩石可钻性分级表······74

附录B 土的分类······76

附录C 岩心钻探岩石研磨性分级表······77

附录D 土试样质量等级划分······78

本规范用词说明······79

引用标准名录······80

附:条文说明······81

1 总则······85

3 基本规定······86

4 钻探准备工作······88

4.1 编制钻探施工方案······88

4.2 施工场地准备······88

4.3 基台与钻塔安装······88

4.4 钻探设备安装······89

4.5 附属设备安装······89

4.6 准备工作检查······89

5 工程地质钻探······91

5.1 钻孔结构设计与钻进方法选择······91

5.2 冲击钻进······91

5.3 回转钻进······92

5.4 地下水位观测······96

5.5 钻孔止水与封孔······96

6 水文地质钻探与水井施工······97

6.1 钻孔结构设计与钻进方法选择······97

6.2 冲击钻进······97

6.3 回转钻进······99

6.4 气动冲击回转钻进······102

6.6 成井工艺······103

7 基桩孔和成槽施工······105

7.1 一般规定······105

7.2 冲击钻进······105

7.3 冲抓锥钻进······106

7.4 大直径回转钻进······106

7.5 潜水电钻钻进······106

7.6 螺旋钻进······106

7.7 旋挖钻进······107

7.8 钻孔扩底钻进······108

7.9 钻孔挤扩支盘施工······108

7.10 成糟施工······109

7.11 清孔······109

8 特种钻探······111

8.1 定向钻进······111

8.2 岩心定向钻进······112

8.3 水平孔钻进······112

8.4 水上钻探······113

8.5 孔内爆破······115

9 冲洗介质与护壁堵漏······117

9.1 冲洗介质······117

9.2 护壁堵漏······118

10 钻探质量······120

10.1 岩(土)心、土试样与水试样的采取······120

10.2 勘察孔孔深校正与钻孔弯曲度······121

10.3 供水管井成井质量······121

10.4 基桩孔成孔质量······122

10.5 成槽质量······122

10.6 原始报表······122

10.7 终孔验收与资料提交······122

11 钻探设备使用、维护与拆迁······123

11.1 钻探设备使用与维护······123

11.2 钻探设备拆迁······123