TY - Journal of Yangtze River Scientific Research Institute A1 - ZHANG Jing-mei, DU Min, JU Xiao-ming T1 - Hydraulic Calculation of Mixed Free-surface-pressure Flow of Water Conveyance Tunnel and Optimal Sluice Discharge in Large Irrigation Area Y1 - 2021-06-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 60 EP - 66 VL - 38 IS - 6 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20200419 ER -