长江镇扬河段世业洲汊道冲淤现状研究

通过对长江镇扬河段世业洲汊道固定断面连续3 a的水下地形测量,综合固定断面面积、0 m等深线、最大深度、平均深度和分流数据分析得出:世业洲右汊道仍处于主导地位,汊道上游各指标数据变化不明显,汊道下游则有变宽加深趋势,并略有淤积;世业洲左汊道仍处于次航道地位,各项指标表明左汊道宽度基本稳定,但汊道水深有加深趋势,尤其是汊道下游变化较为明显。

Present Situation of Scouring and Silting at Shiyezhou Inlet in Zhenyang Reach of the Yangtze River

The underwater topography of fixed sections at Shiyezhou Inlet in Zhenyang Reach of the Yangtze River had been surveyed for three years.The areas of fixed sections,0 m isobath,maximum depth,average depth and distributary were analyzed.The results showed that the right inlet played a dominant role,the indexes did not change significantly in the upstream,which was widened and deepened with deposition in the downstream.The left inlet played a inferior role,the width was basically stable,the water depth was deepened,and the change in the downstream was more obvious.