九曲河闸位于丹阳县东北部九曲河出口处,是太湖水系与长江联接的通道之一,担负着丹阳县及金坛、丹徒、句容等县部分地区的农田排灌任务,受益面积达三百七十万亩。节制闸分五孔,净宽29.6米,其中中孔6米、边孔3.8米及8米各两个。最大引水流量364秒立米,最大排水流量376秒立米。由于沿江节制闸闸门的启闭与潮水涨落有关,过去每次开、关闸都要有专业人员冒着风雨野外作业,观察水情变化,特别是大汛期间,江潮上涨快、流速大,稍有疏忽,闸门就不能适时启闭,影响引、排水量和安全航行,甚 Jiuqu Hezha is located at the exit of Jiuqu River in the northeast of Danyang County. It is one of the channels connecting the Taihu Lake water system with the Yangtze River. It is responsible for irrigation and drainage of farmland in parts of Danyang County, Jintan, Dantu and Jurong Counties, Up to 3.7 million mu Control gate points five holes, net width 29.6 meters, of which 6 meters in the hole, the side of the hole 3.8 meters and 8 meters each two. 364 seconds maximum water diversion flow, the maximum drainage flow of 376 seconds legislation. Due to the opening and closing of floodgate gates along the Yangtze River and tidal fluctuations, in the past each time the gate and gate were closed, there was a storm of professionals in the field work to observe changes in water conditions, especially during the flood season, the fast rising river flow, large flow rate , A slight negligence, the gate can not be timely opening and closing, affecting the lead, displacement and safe navigation, very