TY - Journal of Yangtze River Scientific Research Institute A1 - WU Fan, ZHANG Yun-pei, KOU Jia-bing, LIU Li-peng, LI Peng-yu T1 - Method of Estimating Surrounding Rock Quality Based on Torque Penetration Index and Neural Network Y1 - 2022-12-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 33 EP - 41 VL - 39 IS - 12 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20221039 ER -