长兴岛北环河渗流稳定分析及控制措施

Seepage Stability Analysis and Control measures of Beihuan River in Changxing Island

长兴岛北沿新开北环河是长兴岛青草沙水库周边水系调整工程的最重要的部分,其平面布置根据划示的规划蓝线确定,大部分河段沿老海塘内侧布置。受青草沙水库蓄水影响,河道断面结构设计和河道的开挖施工方案均应考虑渗流稳定。本工程设计阶段通过建模数值计算对北环河渗流稳定进行分析,以确定河道的护砌范围并提出河道开挖过程中需采取的一些施工措施。

The Beihuan River is located in the north of Changxing Island. Excavation of the fiver is the most important part of the surrounding water regulation project of Qingcaosha reservoir in Changxing island. Most parts of the fiver are along the medial layout the old seawall according to the planning line. Influenced by the water level of Qingcaosha Reservoir, structurd design the section and the excavation scheme of the river must consider the seepage stability. During the design stage, numerical analysis was used for confirming the scope of river slope protection and some construction measures during fiver excavation was proposed in this paper.