TY - Journal of Yangtze River Scientific Research Institute A1 - LI Xiao-qing,QI Yang,TANG Xin-jun, GAO Qiang T1 - Simulation of Base Soil-filter System with Two TypicalGradations Based on PFC Y1 - 2017-04-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 92 EP - 97 VL - 34 IS - 4 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20160692 ER -