双导堤平面布置不宜呈突然扩大或收缩状，堤顶高程宜与中潮位一致。

In the plane layout of double dikes, the sudden expansion or contraction should be avoided. The elevation of the top of the dike should be identical with middle tide level.

youdao

双导堤平面布置不宜呈突然扩大或收缩状，堤顶高程宜与中潮位一致。

In the plane layout of double dikes, the sudden expansion or contraction should be avoided. The elevation of the top of the dike should be identical with middle tide level.

youdao