1.0.1 This Standard is formulated with a view to establish an unified method for evaluating the engineering classification of stability of rock mass; provide necessary basis for investigation, design, construction and authorized personnel quota regarding rock engineering construction.
1.0.2 This Standard is applicable to engineering classification of various rock mass.
1.0.3 Engineering classification of rock mass shall adopt a combination of qualitative and quantitative methods, and be carried out in two steps; first to determine the rock mass basic quality and then, rock mass the class of rock mass by combined with the characteristics of specific works.
1.0.4 The engineering classification of rock mass shall not only comply with this standard, but shall also comply with the provisions specified in related current national standards.
1 General Provisions
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Classification Parameters of Rock Mass Basic Quality
3.1 Classification parameters and their determination method
3.2 Qualitative division of classification parameters
3.3 Quantitative indices of classification parameters
4 Classification of Rock Mass Basic Quality
4.1 Determination of class of rock mass basic quality
4.2 Qualitative characteristics of basic quality and the basic quality indices
5 Classification of Engineering Rock Masses
5.1 General requirements
5.2 Rock mass classification in underground engineering
5.3 Rock mass classification in slope engineering
5.4 Rock mass classification in foundation engineering
Appendix A Test Requirements for indices of Rc and Is(50)
Appendix B Measurement Requirements for Indices of Kv and Jv
Appendix C Assessment of Initial Geo-stress Field
Appendix D Physical and Mechanical Parameters of Rock Mass and Discontinuities
Appendix E Stand-up Time of Engineering Rock Mass
Explanation of Wording in This Standard
Standard
GB/T 50218-2014 Standard for engineering classification of rock mass (English Version)
Standard No.
GB/T 50218-2014
Status
valid
Language
English
File Format
PDF
Word Count
7000 words
Price(USD)
170.0
Implemented on
2015-5-1
Delivery
via email in 1 business day
Detail of GB/T 50218-2014
Standard No.
GB/T 50218-2014
English Name
Standard for engineering classification of rock mass
Chinese Name
工程岩体分级标准
Chinese Classification
Professional Classification
GB
ICS Classification
Issued by
Ministry of Housing and Urban-Rural Construction of the People’s Republic of China
1.0.1 This Standard is formulated with a view to establish an unified method for evaluating the engineering classification of stability of rock mass; provide necessary basis for investigation, design, construction and authorized personnel quota regarding rock engineering construction.
1.0.2 This Standard is applicable to engineering classification of various rock mass.
1.0.3 Engineering classification of rock mass shall adopt a combination of qualitative and quantitative methods, and be carried out in two steps; first to determine the rock mass basic quality and then, rock mass the class of rock mass by combined with the characteristics of specific works.
1.0.4 The engineering classification of rock mass shall not only comply with this standard, but shall also comply with the provisions specified in related current national standards.
Contents of GB/T 50218-2014
1 General Provisions
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Classification Parameters of Rock Mass Basic Quality
3.1 Classification parameters and their determination method
3.2 Qualitative division of classification parameters
3.3 Quantitative indices of classification parameters
4 Classification of Rock Mass Basic Quality
4.1 Determination of class of rock mass basic quality
4.2 Qualitative characteristics of basic quality and the basic quality indices
5 Classification of Engineering Rock Masses
5.1 General requirements
5.2 Rock mass classification in underground engineering
5.3 Rock mass classification in slope engineering
5.4 Rock mass classification in foundation engineering
Appendix A Test Requirements for indices of Rc and Is(50)
Appendix B Measurement Requirements for Indices of Kv and Jv
Appendix C Assessment of Initial Geo-stress Field
Appendix D Physical and Mechanical Parameters of Rock Mass and Discontinuities
Appendix E Stand-up Time of Engineering Rock Mass
Explanation of Wording in This Standard
