RESEARCH ON PARAMETERS OF HOEK-BROWN CRITERION AND APPLICATION BASED ON CORE CLASSIFICATION
LIN Daming1，2，3，YUAN Guangxiang4，SHANG Yanjun2，LIU Kan3，ZHANG Bin5
(1. Research Institute of Highway，Ministry of Transport，Beijing 100088，China；2. Institute of Geology and Geophysics，Chinese Academy of Sciences，Beijing 100029，China；3. Key Laboratory of Geohazard Prevention of Hilly Mountains，Ministry of Land and Resources，Fuzhou，Fujian 350002，China；4. School of Resources and Environment，North China University of Water Resources and Electric Power，Zhengzhou，Henan 450011，China；5. School of Engineering and Technology，
China University of Geosciences，Beijing 100083，China)
Abstract：Geological strength index(GSI) is an important parameter of Hoek-Brown criterion. However，there are not any typically measurable parameters during determination of GSI，which leads to the highly subjective value of GSI. Based on the study of rock mass of detailed geotechnical investigation in the region where is abundant of gneiss，the authors propose that a quantitative analysis method should be used to GSI，according to the parameters such as rock core length(RCL) and Jc，and trying to utilize the photos of the intact core in the field site to substitute the sketch of rock mass structure in GSI，Ultimately，the authors set up a new generalized GSI. In terms of the contrast of calculation of ultimate bearing capacity for rock foundation by the authors and the values given by the unit of investigation，the authors find that the results fit well and the precision is high，which means it is scientific of these charts.
林达明1，2，3，袁广祥4，尚彦军2，柳 侃3，张 彬5 . 基于岩芯分级的Hoek-Brown准则参数研究及应用[J]. 岩石力学与工程学报, 2013, 32(1): 143-149.
LIN Daming1，2，3，YUAN Guangxiang4，SHANG Yanjun2，LIU Kan3，ZHANG Bin5. RESEARCH ON PARAMETERS OF HOEK-BROWN CRITERION AND APPLICATION BASED ON CORE CLASSIFICATION. , 2013, 32(1): 143-149.
SONMEZ H，ULUSAY R. Modications to the geological strength index(GSI) and their applicability to stability of slopes[J]. International Journal of Rock Mechanics and Mining Sciences，1999，36(6)：743-760.
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2013, Vol. 32 
