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Q-system (geotechnical engineering)

작성자 Uploader : ezcivil 작성일 Upload Date: 2016-04-02변경일 Update Date: 2016-04-02조회수 View : 526

The Q-system for rock mass classification is developed by Barton, Lien, and Lunde. It expresses the quality of the rock mass in the so-called Q-value, on which are based design and support recommendations for underground excavations.

The Q-value is determined with

Q = (RQD/Jn)*(Jr/Ja)*(Jw/SRF)

RQD : Rock Quality Designation
Jn : Joint set number
Jr : Joint roughness number
Ja : Joint alteration number
Jw : Joint water parameter
SRF : Stress Reduction Factor

*** 참고문헌[References] ***

https://en.wikipedia.org/wiki/Q-system_(geotechnical_engineering)
Q = (RQD/Jn)*(Jr/Ja)*(Jw/SRF)
변수명 Variable 변수값 Value 변 수 설 명 Description of the variable


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