TY - Journal of Yangtze River Scientific Research Institute A1 - JIANG Jie, PU Ou, OU Xiao-duo, ZHAO Jian-gang, XIE Gui-qiu T1 - Expert System of Surrounding Rock Classification for Highway Tunnel in Karst Region: Design and Application Y1 - 2018-07-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 94 EP - 99 VL - 35 IS - 7 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20161228 ER -