Foreword

1 Scope

2 Normative References

3 Terms and Symbols

3．1 Terms

3．2 Symbols

4 GeneralProvisions

5 Engineering Geologicallnvestigation at Planning Stage

5．1 Generalrequirements

5．2 Regional geology and earthquake

5．3 Reservoir

5．4 Dam site

5．5 Long headrace route and powerhouse site

5．6 Natural construction materials

5．7 Investigationreport

6 Engineering Geologicallnvestigation at Pre-feasibility Study Stage

6．1 Generalrequirements

6．2 Regional tectonic stability

6．3 Reservoir

6．4 Dam site

6．5 Headrace route

6．6 Powerhouse site

6．7 Flood-dischargestructures

6．8 Natural construction materials

6．9 Investigationreport

7 Engineering Geologicallnvestigation at Feasibility Study Stage

7．1 Generalrequirements

7．2 Reservoir

7．3 Earth-rockfilldam

7．4 Concrete gravity dam

7．5 Concrete arch dam

7．6 Tunnels

7．7 Channel

7．8 Underground powerhouse system

7．9 Surface powerhouse system

7．10 Spillway

7．11 Navigationstructures

7．12 Main temporary structures

7．13 Natural construction materials

7．14 Investigationreport

8 Engineering Geologicallnvestigation at Tender Design Stage

8．1 Generalrequirements

8．2 Review ofengineering geologicalproblems

8．3 Special engineering geological problems

8．4 Temporary (Ancillary) building

8．5 Concentrated resettlement areas and special rehabilitation sites

8．6 Natural constructions materials

8．7 Investigationreport

9 Engineering Geologicallnvestigation at Detailed Design Stage

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