1.0.1 This standard is formulated in order to unify water resources and hydropower engineering geological investigation, make sure working depth of investigation.
1.0.2 This standard is applicable to geological investigation for large-scale water resources and hydropower engineering.
1.0.3 During water resources and hydropower engineering geological investigation, not only the requirements stipulated in this standard (code), but also those in the current relevant ones of the nation shall be complied with.
2. Basic requirement 1
3 Engineering geological investigation at planning stage 3
3.1 General requirements 3
3.2 Regional geology and earthquake 3
3.3 Reservoir 4
3.4 Dam site 4
3.5 Long water diversion line 6
3.6 Investigation report 7
4 Engineering geological investigation at feasibility study stage 9
4.1 General requirements 9
4.2 Stability of regional structure 9
4.3 Reservoir 12
4.4 Dam site 15
4.5 Water diversion line and plant location 19
4.6 Spillway 22
4.7 Natural construction material 22
4.8 Investigation report 23
5 Engineering geological investigation at preliminary design stage 25
5.1 General requirements 25
5.2 Reservoir 25
5.3 Dam site 30
5.4 Underground cavity 36
5.5 Channel 39
5.6 Location of surface plant and pumping station 40
5.7 Spillway 41
5.8 Navigation structure 42
5.9 Natural construction materials 43
5.10 Investigation report 44
6. Engineering geological investigation at detail design stage 47
6.1 General requirements 47
6.2 Investigation for specialized engineering geologic problem 47
6.3 Construction geology 49
Appendix A Appendix of engineering geological investigation report 50
Appendix B Evaluation on karst leakage 52
Appendix C Submergence evaluation 54
Appendix D Parameter value adoption for physical mechanic property of rock and soil 57
Appendix E Division of rock mass weathering zone 63
Appendix F Analyses stability of slope 65
Appendix G Evaluation on corrosion of environment water to concrete 68
Appendix H Determination of loess collapsibility 70
Appendix J Penetrability grading of rock and soil 71
Appendix K Classification of rock mass structure 72
Appendix M Determination for soil seepage deformation 73
Appendix N Liquefaction determination of soil 77
Appendix P Classification of wall rock engineering geology 82
Explanation of Wording in this code 89
