RESEARCH ON QUANTIFICATION INDEX OF ROCK
MASS IN RIVERSIDE UNLOADING ZONE CLASSIFICATION
SUN Yunzhi1，2，HUANG Runqiu3
(1. Yangtze River Survey，Planning and Design Institute，Wuhan，Hubei 430010，China；2. Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources，Yangtze River Scientific Research Institute，Wuhan，Hubei 430010，China；
3. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection，Chengdu University of Technology，
Chengdu，Sichuan 610059，China)
Abstract：Rock mass unloading in riverside is a familiar geological phenomenon in hydroelectric project slope，it has important significance with regard to stability of rock mass slope，as well as relevant rock engineering problem. Unloading zone quantitative classification is always high lightened by hydroelectric project survey and design，it is common to use quantitative index to reflect rock mass structure characteristics despite of many other index used for unloading zone quantitative classification. According to hydroelectric engineering practice，this paper discussed the problem how to classify quantitative index for rock mass unloading zone in riverside，and proposed to use width of opening fissures，total width of opening fissures and ratio of wave velocity as quantitative index for rock mass unloading zone in riverside.
孙云志1，2，黄润秋3. 谷坡岩体卸荷带划分量化指标研究[J]. 岩石力学与工程学报, 2012, 31(s2): 3942-3949.
SUN Yunzhi1，2，HUANG Runqiu3. RESEARCH ON QUANTIFICATION INDEX OF ROCK
MASS IN RIVERSIDE UNLOADING ZONE CLASSIFICATION. , 2012, 31(s2): 3942-3949.
黄润秋，林 峰，陈德基. 岩质高边坡卸荷带形成及其工程性状研究[J]. 工程地质学报，2009，17(3)：227-234.(HUANG Runqiu，LIN Feng，CHEN Deji. Formation mechanism of unloading fracture zone of high slope and its engineering behaviors[J]. Journal of Engineering Geology，2009，17(3)：227-234.(in Chinese))
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2012, Vol. 31 
