长江中游戴家洲河段戴家洲右缘护岸工程方案研究

Bank protection works plan at the right edge of Daijiazhou island on the middle reach of the Yangtze River

为巩固戴家洲河段航道整治一期工程成果,制止直水道平面形态向不利方向发展,为总体工程的全面实施创造条件,实施戴家洲右缘护岸工程十分必要;分析了戴家洲右缘崩退情况、演变特点,研究了岸线守护部位及长度,确定了守护原则与目标;对工程方案进行了物理模型试验,通过对水面线、流速场、近岸流速、汊道分流比等各个方面进行比较,确定了工程实施方案。

In order to solidify engineering effect of the first phrase project of Daijiazhou section fairway regulation and prevent the trend towards unfavorable conditions of the plane shape of the straight channel,so as to create a condition for the overall implementation of the master plan,it is necessary to implement the bank-protection works of the right Daijiazhou island edge.This paper analyzes the bank caving conditions and evolution characteristics of the right Daijiazhou island edge,studies the location and length of bank protection,and determines the principle and goal of the protection works.According to the comparison of water surface profile,flow rate field,flow velocity near the shore,diversion ratio and so on based on the physical model test,it determines the implementation plan of the works.