根据大江截流期间监测、收集到的成果资料，对长江水全部改由导流明渠下泄，所观测到的大江围堰戗堤进占对导流明渠分流及流速流态的变化，河床冲淤及淤积量纵、横向分布进行了阐述，得到了该河段水流及冲淤变化的一般性规律 According to the data collected and monitored during the river closure, all of the Yangtze River water is diverted by the diversion channel. The diversion and flow patterns of the diversion channels and diversion of the diversion channel are observed. The riverbed scouring and silting The amount of vertical and horizontal distribution were described, the water flow and scouring and silting changes in the general rule