文档介绍：National Standard of the People's Republic of China
GB 50021-2001
Code for Investigation of Geotechnical Engineering
岩土工程勘察规范
Prepared by: the Ministry of Construction of the People's Republic of China
Approved by: the Ministry of Construction of the People's Republic of China
Implemented on: March 1, 2002
Contents
Foreword 1
1 General Provisions 4
2 Terms and Symbols 4
3 Investigation Classification and Geotechnical Classification 7
4 Basic Requirements of Engineering Investigations 16
Building Construction and Structures 16
Underground Excavation 24
Shoreside Engineering 27
Road and work Engineering 30
Waste Disposal Engineering 34
Nuclear Power Plant 39
Side Slope Engineering 46
Foundation Excavation Engineering 49
Pile Foundation 51
Foundation Treatment 54
Load Increasing and Protection for Pre-existing Building 57
5 Adverse Geological Action and Geological Disaster 60
Karst 60
Landslide 65
Dangerous Rock and Collapse 67
Mud-rock Flow 68
Worked-out Section 70
Land Subsidence 72
Seismic Effect of Site and Foundation 74
Active Faults 76
6 Special Rock and Soil 78
Collapsible Soil 78
Red Clay 80
Soft Soil 83
Fabricated Soil 85
Filling 86
Perennial Frost 88
Expansion Rock and Soil 91
Brine Salting Rock and Soil 94
Decayed Rock and Residual Soil 96
Pollute Soil 98
7 Groundwater 99
Investigation Requirements of Groundwater 99
Mensuration for Hydrogeologic Parameter 101
Evaluation for Functions of Ground-Water 102
8 Engineering Geological Mapping and Survey 105
9 Exploration and Sampling 108
General Requirements 108
Drilling 108
Costeen, Trenching and Cave Exploration 111
Adopting of Geotechnical Samples 111
Geophysical Exploration 115
10 In-situ Measurement 117
General Requirements 117
Load Test 117
Statically Cone ration Test 120
Circular Co