1.0.1 The main tasks of water pressure test in borehole are measuring water permeability of rock mass and providing basic data for rock mass permeation performance evaluation and permeation control design.
1.0.2 This code is applicable to routine water pressure test work in geological exploration of water resources and hydropower engineering.
1.0.3 In addition to this code, the water pressure test also shall meet those specified in current relevant standards of the nation.
1 General Provisions
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Basic Requirements
3.1 Test Method and Length of Test Section
3.2 Pressure Stage and Pressure Value
3.3 Test Borehole
3.4 Test Water and Test Personnel
4 Test Equipment
4.1 Water-stop Packer
4.2 Water Supply Equipment
4.3 Measurement Equipment
5 Site Test
5.1 Test Procedure
5.2 Hole Flushing
5.3 Test Section Segregation
5.4 Water Level Observation
5.5 Pressure and Flow Observation
6 Test Data Processing
Appendix A Determination of Pressure Loss of Tube
Appendix B Concrete Packer Casting Method
Appendix C Calculation of the Rock Mass Permeability Coefficient with Water Pressure Test Results
Appendix D Record Format of Water Pressure Test in Borehole
Explanation of Wording in this Code
