%0 Journal Article %A JIANG Jie %A PU Ou %A OU Xiao-duo %A ZHAO Jian-gang %A XIE Gui-qiu %T Expert System of Surrounding Rock Classification for Highway Tunnel in Karst Region: Design and Application %D 2018 %R 10.11988/ckyyb.20161228 %J Journal of Yangtze River Scientific Research Institute %P 94-99 %V 35 %N 7 %X As highway tunnel construction is greatly affected by karst geological condition, karst indexes should be considered in addition to conventional indicators in surrounding rock classification. In this research, a model of surrounding rock classification was set up, in which rock hardness, rock mass integrity, groundwater status, structural plane occurrence and karst status are included. The expert system based on three tunnel projects in Guangxi Province for surrounding rock classification was designed by embedding normalization algorithm for the indexes using MatLab and C++. The expert system software was applied to engineering and the consistence between software results and actual survey reached 80.89%. %U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20161228