Q-system (geotechnical engineering)
id:
q-system-geotechnical-engineering-297-4353351
title:
Q-system (geotechnical engineering)
text:
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 design are based and support recommendations for underground excavations. The Q-value is determined with The first term RQD (Rock Quality Designation) divided by Jn is related to the size of the intact rock blocks in the rock mass. The second term Jr divided by Ja is related to the shear strength along the discontinuity planes and the thi
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Q-system_(geotechnical_engineering)
date created:
date modified:
2024-01-26T04:11:04Z
main entity:
{"identifier":"Q8216256","url":"https://www.wikidata.org/entity/Q8216256"}
image:
fields total:
13
integrity:
13