湖北省基坑管井降水工程技术规范.pdf

DB42/T830-2012

目次

前言…··························…......…....….…··················….........皿

l范固....

2规范性引用文件..……

3术语、符号…………·……...•..•..••..•••......•••...•.•.•.••...••.•.•.••.•......•.•..•.•...•...1

3.1术语··

3.2符号………..……3

4基本规定………..……………...….4

5管井降水设计...….......……

5.1一般规定…

5.2管井布置.....…......……·…..........6

5.3管井结构设计…··

5.4过滤器设计………....…..........7

5.5降水出水量的确定...………...….·•·•••••••••···•••···•·•••·••••·•10

5.6降水水位与地面沉降量的预测……...........…13

6降水管井施工....…....………·…..........…..15

6.1施工准备…......….....…………15

6.2成井设备与材料…...............…...….........…….16

6.3井身钻进.….............….....17

6.4探井与换浆…….........…·………21

6.5井管安装……….........….........…·········…….21

6.6棋砾及止水……·…..…....….………21

6.7洗井…...………·………....….......22

6.8试验抽水......…··…………….….23

7降水运行、维护与监测...………………...23

7.1降水运行与维护......…........23

7.2降水监测…….........….24

8管井降水工程验收.........………...…25

附录A（资料性附录〉导渗井〈砂砾井〉降水...…...........…..…27

附录B（资料性附录〉轻型点井降水………m

＼泸少

DB42/T830-2012

附录C（规范性附录〉基坑涌水县的计算….…………….…·32

附录D（规范性附录〉降水运行记录….....…······························…·36

附录E（规范性附录〉降水管井验收单...………….................…·37

本规程用词说明.....…..38

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