TY - Journal of Yangtze River Scientific Research Institute A1 - WEN Hui-hui, YIN Jian-min, QIN Zhi-guang, XIE Ren-hong T1 - Application of BP Neural Network to the Back Analysis of Mechanical Parameters of Tunnel Surrounding Rock Y1 - 2013-02-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 47 EP - 51 VL - 30 IS - 2 UR - http://ckyyb.crsri.cn N1 - 10.3969/j.issn.1001-5485.2013.02.010 ER -