本規(guī)程主要內(nèi)容為總則、術(shù)語和符號、基本規(guī)定、降水工程勘察、降水工程設(shè)計、降水井施工、降水運(yùn)行 、封井等8章和5個附錄，并附條文說明。

DBT29-229-2014······1

1 總則······10

2 術(shù)語和符號······11

2.1 術(shù)語······11

2.2 符號······13

3 基本規(guī)定······16

3.1 基坑降水工程分級······16

3.2 基坑降水工程的主要內(nèi)容······16

4 降水工程勘察······19

4.1 一般規(guī)定······19

4.2 勘察孔(井) 布置······20

4.3 抽水試驗(yàn)······22

4.4 水文地質(zhì)參數(shù)······23

5 降水工程設(shè)計······27

5.1 一般規(guī)定······27

5.2 降水技術(shù)方法選擇······28

5.3 降水井布置······29

5.4 單井結(jié)構(gòu)設(shè)計······31

5.5 基坑抗突涌穩(wěn)定性驗(yàn)算······33

5.6 降水出水量計算······35

5.7 降水水位計算及預(yù)測······38

5.8 降水工程的排水要求······40

6 降水井施工······41

6.1 一般規(guī)定······41

6.2 成孔施工······41

6.3 井管安裝······42

6.4 濾料投放······43

6.5 圍填止水(料)施工······44

6.6 洗井······44

6.7 試抽水······46

6.8 成井驗(yàn)收······46

7 降水運(yùn)行······48

7.1 一般規(guī)定······48

7.2 集水明排······48

7.3 降水運(yùn)行及維護(hù)······49

7.4 基坑降水工程施工觀測······50

8 封井······52

8.1 一般規(guī)定······13

8.2 封井施工······52

附錄A 基坑開放式降水涌水量計算······54

附錄B 成井施工記錄表······58

附錄C 成井驗(yàn)收記錄表······59

附錄D 降水運(yùn)行記錄表······60

附錄E 基坑降水觀測日報表······61

本規(guī)程用詞說明······63

引用標(biāo)準(zhǔn)名錄······64

條文說明······65

1 總則······69

3 基本規(guī)定······70

4 降水工程勘察······73

4.1 一般規(guī)定······73

4.2 勘察孔(井)布置······74

4.3 抽水試驗(yàn)······75

4.4 水文地質(zhì)參數(shù)······76

5 降水工程設(shè)計······78

5.1 一般規(guī)定······78

5.2 降水技術(shù)方法選擇······78

5.3 降水井布置······79

5.4 單井結(jié)構(gòu)設(shè)計······79

5.5 基坑抗突涌穩(wěn)定性驗(yàn)算······79

5.6 降水出水量計算······80

5.7 降水水位計算及預(yù)測······81

6 降水成井施工······82

6.1 一般規(guī)定······82

6.2 成孔施工······82

6.3 井管安裝······83

6.4 濾料投放······84

6.5 圍填止水(料)施工······84

6.6 洗井······85

6.7 試抽水······86

7 降水運(yùn)行······88

7.1 一般規(guī)定······88

7.2 集水明排······88

7.3 降水運(yùn)行及維護(hù)······89

7.4 基坑降水工程施工觀測······89

8 封井······90

8.2 封井施工······90