1 General Provision
1.0.1 This Code is formulated with a view to standardizing engineering geological investigation work of water resources and hydropower, defining investigation work depth and requirements, as well as ensuring investigation work quality.
1.0.2 This Code is applicable to large-scale engineering geological investigation work of water resources and hydropower.
1.0.3 Engineering geological investigation of water resources and hydropower should be classified into such phases as planning, project proposal, feasibility study, preliminary design, bidding design and construction details design. Investigation work at project proposal phase should basically satisfy the depth requirements of feasibility study phase.
1.0.4 Danger release and strengthening engineering investigation for dangerously weak reservoir should be classified into such three phases as safety evaluation, feasibility study and preliminary design.
1.0.5 Engineering geological investigation of water resources and hydropower shall comply with not only this Code but also those stipulated in the current relevant ones of the nation.
2 Terms and Symbols
2.1 Terms
2.1.1 Active fault
The fault with activities that has been formed since the Late Pleistocene epoch (100,000 years)
2.1.2 Reservoir leakage
The phenomenon that water body leaks from the reservoir through the rock-soil mass in the reservoir basin to outside, thus losing water.
Contents
1 General Provision
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Basic Requirements
4 Engineering Geological Investigation during Planning Phase
4.1 General Requirements
4.2 Regional Geology and Earthquake
4.3 Reservoir
4.4 Dam Site
4.5 Water Diversion Engineering
4.6 Flood Prevention and Drainage Engineering
4.7 Irrigation Area Engineering
4.8 River Regulation Engineering
4.9 Natural Building Material
4.10 Investigation Report
5 Engineering Geological Investigation during Feasibility Study Phase
5.1 General Requirements
5.2 Regional Tectonic Stability
5.3 Reservoir
5.4 Dam Site
5.5 Power Generation and Water Diversion Line and Plant Site
5.6 Spillway
5.7 Canal and Canal Structures
5.8 Sluice and Pumping station
5.9 Deep and Long Tunnel
5.10 Embankment and Flood Diversion and Storage Engineering
5.11 Irrigation Area Engineering
5.12 River Regulation Engineering
5.13 Resettlement Sites
5.14 Natural Building Material
5.15 Investigation Report
6 Engineering Geological Investigation during Preliminary Design Phase
6.1 General Requirements
6.2 Reservoir
6.3 Earth-rock Dam
6.4 Concrete Gravity Dam
6.5 Concrete Arch Dam
6.6 Spillway
6.7 Ground Power House
6.8 Underground Power House
6.9 Tunnel
6.10 Open Diversion Channel and Cofferdam Engineering
6.11 Navigation Structure
6.12 Slop Engineering
6.13 Canal and Canal Structure
6.14 Sluice and Pumping Station
6.15 Deep and Long Tunnel
6.16 Embankment Protection Engineering
6.17 Irrigation Area Engineering
6.18 River Regulation Engineering
6.19 New Resettlement Site
6.20 Natural Building Material
6.21 Investigation Report
7 Engineering Geological Investigation during Bidding Design Phase
7.1 General Requirements
7.2 Engineering Geological Reexamination and Investigation
7.3 Investigation Report
8 Engineering Geological Investigation during Construction Detail Design Phase
8.1 General Requirements
8.2 Special Engineering Geological Investigation
8.3 Construction Geology
8.4 Investigation Report
9 Engineering Geological Investigation for Danger Release and Strengthening of Dangerously Weak Reservoir
9.1 General Requirements
9.2 Engineering Geological Investigation during Safety Evaluation Phase
9.3 Engineering Geological Investigation during Feasibility Study Phase
9.4 Engineering Geological Investigation during Preliminary Design Phase
9.5 Investigation Report
Appendix A Attachment of Engineering Geological Investigation Report
Appendix B Applicability of Geophysical Exploration Method
Appendix C Karst Leakage Evaluation
Appendix D Immersion Evaluation
Appendix E Rock-soil Physical and Mechanical Parameter Value
Appendix F Permeability Grading of Rock-soil Mass
Appendix G Leakage Deformation Evaluation of Soil
Appendix H Division of Weathering Zone of Rock Mass
Appendix J Division of Relief Zone of Side Slope Rock Mass
Appendix K Technical Stipulation of Slope Stability Analysis
Appendix L Corrosion Evaluation of Environmental Water
Appendix M Sampling of Deep Sand Oval Gravel Layer of River Bed and Technical Stipulation of Field Test
Appendix N Engineering Geological Classification of Surrounding rock
Appendix P Judgement of Soil Liquefaction
Appendix Q Judgment of Rock Blasting
Appendix R Key Points of Investigation of Special Soil
Appendix S Judgement of Expansive Soil
Appendix T Determinaiton of Collapsibility and Inital Collapse Pressure of Loess
Appendix U Classification of Rock Mass Structure
Appendix V Engineering Geological Classification of Rock Mass of Dam Foundation
Appendix W Reduction Coefficient of External Water Pressure
Explanation of Wording in this Code
Explanation of Provisions
