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钱塘江小尖山江道河床宽浅,江道自上游向下游逐渐变宽,且南、北两岸顺直段和凹岸段交错布置,特别是洪汛期和大潮汛期,江流汹涌,洪潮水顶冲强劲,滩槽冲淤多变,特别是滩地的冲淤变化给沿线堤防的整体安全性带来不稳定因素。通过历年钱塘江江道地形测量结果,分析此处江道滩地冲淤规律以及深槽摆动变化,为以后小尖山北岸堤防除险加固措施提供前期研究资料。
The channel of Xiaotianshanjiang River in Qiantang River is wide and shallow. The river channel broadens from upstream to downstream. The straight and concave sections of the south and north banks are staggered, especially during flood season and flood season. , Erosion and silting in the trough changeable, especially the changes in erosion and deposition of the beach bring instability to the overall safety of embankments along the route. According to the results of topographic survey of Qiantangjiang River in the past years, the scouring and silting regularities of the beach and the changes of deep groove wobble are analyzed to provide the preliminary research data for the future reinforcement of the north bank of Xiajian Mountain.