1 概况:鸭河口灌区社旗分干渠是白桐干渠的一条分干,渠首位于干渠10+000处,设计引水流量13.0m~3/s,效益宛城区和社旗县计1.47万hm~2耕地,多年来通水流量严重不足,实际过水能力仅5.4m~3/s,目前配套面积只有0.65万hm~2,社旗分干渠全长24.7km,其中上游9.3km是切岗深挖方渠段,挖深2.5～10m,局部区段达8～13m,外弃土高3～5m,该区段土质表层为 1 Overview: The Yadukou Irrigation Area Branch of the flag is a branch of the Pak Tong trunk canal, drainage head located in the trunk 10 + 000, design diversion flow of 13.0m ~ 3 / s, Wancheng District and Social County benefits 14,700 hm ~ 2 Cultivated land has a serious shortage of water flow over the years. The actual water-passing capacity is only 5.4m ~ 3 / s. Currently, the supporting area is only 0.65million hm ~ 2. The total length of the flag branch is 24.7km, of which the upstream 9.3km is the cut- Excavation of the canal section, dug deep 2.5 ~ 10m, the local section of up to 8 ~ 13m, 3 to 5m high outside the abandoned soil, the section of the soil surface is