1.0.1 This code is formulated in order to implement the relevant technical and economic policy of the state in engineering geological prospecting and sampling of construction and ensure safety, application, advanced technology, economy and rationality and quality.
1.0.2 This code is applicable to engineering geological prospecting and sampling technology of construction.
1.0.3 During engineering geological prospecting and sampling, effective measures shall be taken to protect environment, save resource, guarantee personal and construction safety and ensure prospecting and sampling quality.
1.0.4 Engineering geological prospecting and sampling shall meet not only this code but also the current relevant standards of the state.
1 General Provisions 1
2 Terms 2
3 Basic Requirements 4
4 Point Positioning and Measurement of Exploration 5
5 Boring/Drilling 6
5.1 General Requirement 6
5.2 Borehole Caliper 6
5.3 Method of Drilling 7
5.4 Drilling Fluid and Water Proof Wall 8
5.5 Identification of the Soil Sampling and Rock Core 9
6 Borehole Sampling 11
6.1 General Requirement 11
6.2 Borehole Sampler 11
6.3 Penetration Sampling 12
6.4 Rotary Sampling 12
7 Exploration Wells, Exploration Trenching and Hole 14
8 Sampling of the Exploration Wells, Exploration Trenching and Hole 15
9 Special Geotechnical 16
9.1 Soft Soil 16
9.2 Expansive Geotechnical 16
9.3 Collapsible Soil 17
9.4 Permafrost 17
9.5 Contaminated Soil 18
10 Special Ground 19
10.1 Karst Area 19
l0.2 Water Boring/Water Drilling 19
10.3 Ice Boring 20
11 Groundwater Table Measurement and Sampling 21
12 Geotechnical Sampling Field in-situ Inspection, Sealed and Transportation 22
13 Backfill of the Borehole, Exploration well, Exploration Trenching and Hole 24
14 Exploration Record and Achievements 25
14.1 Exploration Field Notes 25
14.2 Exploration Achievements 26
Appendix A Engineering Geology Boring Caliber and Drilling Specification 27
Appendix B Categorization of Geotechnical Drilling 28
Appendix C Sampling Instrument and Method of Different Rank Sampling 31
Appendix D Technology Standard of the Sampler 33
Appendix E Structural Representation of the Sampler 36
Appendix F Profile of the Exploration Wells, Exploration Trenching and Hole 42
Appendix G Geotechnical Field Identification 44
Appendix H Field Notes Table of the Borehole Table H Field Notes Table of the Borehole 54
Appendix J Field Columnar Profile of the Borehole 55
Explanation of Wording in This Specification 56
List of Quoted Standards 57
