前言

1　总　则

2　术语、符号

• 2.1　术　语

• 2.2　符　号

3　基本规定

4　降水工程勘察

• 4.1　一般规定

• 4.2　水文地质勘察孔布置

• 4.3　抽水试验及水文地质参数计算

5　降水工程设计

• 5.1　一般规定

• 5.2　基坑涌水量估算

• 5.3　管井降水

• 5.4　真空井点、喷射井点降水

• 5.5　集水明排降水

• 5.6　引渗井降水

• 5.7　截水帷幕

• 5.8　地下水回灌

• 5.9　降水引起周边地面沉降预测

6　降水工程施工与验收

• 6.1　一般规定

• 6.2　降水管井

• 6.3　真空井点、喷射井点

• 6.4　明　排

• 6.5　引渗井

• 6.6　截水帷幕

• 6.7　地下水回灌

7　降水工程运行与维护、场地排水

• 7.1　一般规定

• 7.2　运行与维护

• 7.3　场地排水

8　降水工程监测

• 8.1　一般规定

• 8.2　水位监测

• 8.3　出水量、含砂量监测

• 8.4　水质监测

• 8.5　地面沉降监测

• 8.6　监测预警

• 8.7　监测成果

9　封井及拆除

• 9.1　一般规定

• 9.2　混凝土封井

• 9.3　注浆封井

• 9.4　降水井拆除

附录A　抽水试验方法和要求

附录B　水文地质试验参数计算

附录C　土的渗透变形

附录D　管井过滤管长度及孔隙率的确定

附录E　明排降水排水沟、集水井涌水量计算

本标准用词说明

引用标准名录

1　General Provisions

2　Terms and Symbols

• 2.1　Terms

• 2.2　Symbols

3　Basic Requirement

4　Investigation of Groundwater Dewatering Engineering

• 4.1　General Requirement

• 4.2　Layout of Exploration Well

• 4.3　Hydrogeological Test of Aquifers&Arameters Calculation

5　Design of Groundwater Dewatering Engineering

• 5.1　General Requirements

• 5.2　Discharge Calulation

• 5.3　Tube Well Dewatering

• 5.4　Light Well Point Dewatering

• 5.5　Open Pumping Dewatering

• 5.6　Self Absorbing Well Dewatering

• 5.7　Groundwater Cut-off Curtain

• 5.8　Artificial Groundwater Recharge

• 5.9　Prediction of Surrounding Land Settlement Caused by Dewatering

6　Construction of Dewatering Engineering

• 6.1　General Requirement

• 6.2　Construction of Tube Well

• 6.3　Construction of Light Well Point

• 6.4　Construction of Open Pumping

• 6.5　Construction of Self Absorbing Well

• 6.6　Construction of Groundwater Cut-off Curtain

• 6.7　Construction of Artificial Groundwater Recharge

7.1　General Requirement

• 7.1　General Requirement

• 7.2　Dewatering&Maintenace

• 7.3　Drainage

8　Dewatering Monitoring

• 8.1　General Requirement

• 8.2　Groundwater Monitoring

• 8.3　Water Yield and Sand Content Monitoring

• 8.4　Water Quality Monitoring

• 8.5　Land Subsidence Monitoring

• 8.6　Monitoring and Warning

• 8.7　Monitoring Results

9　Well Plugging and Demolition

• 9.1　General Requirement

• 9.2　Well Plugging by Concrete

• 9.3　Well Plugging by Grouting

• 9.4　Well Demolish

Appendix A　Pumping test

Appendix B　Hydrogeological Parameters Calculation

Appendix C　Seepage Deformation of Soil

Appendix D　Length of the Filter Tube

Appendix E　Water Inflow in Open Pumping

Explanation of Wording in This Standard

List of Quoted Standards