DB/T29-252-2018：基坑工程地下水回灌规程

DBT29-252-2018······1

1 总则······10

2 术语······11

3 基本规定······13

4 勘察······15

5 设计······18

5.1 一般规定······18

5.2 回灌井布置······19

5.3 回灌水位计算及预测······20

5.4 回灌井构造······23

6 施工与验收······25

6.1 成孔施工······25

6.2 井管安装······25

6.3 滤料投放······26

6.4 止水施工······26

6.5 洗井······27

6.6 试抽水试验······27

6.7 成井质量验收······28

7 运行与监测······30

7.1 运行原则······30

7.2 回扬······31

7.3 回灌监测······31

8 回灌水源处理······33

8.1 一般规定······33

8.2 水质处理措施······33

附录A 单井回灌试验要求······34

附录B 基坑地下水回灌工程含水层选择······36

附录C 回扬要求······44

本规程用词说明······45

引用标准名录······46

条文说明······47

1 总则······50

2 术语······51

3 基本规定······52

4 勘察······53

5 设计······55

5.1 一般规定······55

5.2 回灌井布置······55

5.3 回灌水位计算及预测······60

5.4 回灌井构造······66

6 施工与验收······67

6.1 成孔施工······67

6.2 井管安装······67

6.3 滤料投放······67

6.5 洗井······68

6.7 成井质量验收······68

7 运行与监测······70

7.1 运行原则······70

7.2 回扬······72

7.3 监测······72

8 回灌水源处理······74

8.1 一般规定······74

8.2 水质处理措施······74

附录C 回扬要求······76