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一、基本情况解放前修建的鲑头闸,由于闸底淘空严重,平时涨潮漏入大最咸水,且闸底过高,渗入闸内咸水不能排出,给农业生产带来很大灾害。而且,在台风季节还有倒塌的危险。因此,必须重建新的鲑头水闸。新闸建在老闸附近牛田洋海滩上(图1)。土质属榕江淤泥冲积层。未进行地质钻探,施工前仅进行了简单的锥探工作。即在老闸上游河床高程为-1.5米(榕江标高,下同)地面上,距离新闸5米(图1)处用直径18毫米、长5.5米的圆钢筋插在地面上,不加压就自动
First, the basic situation Before the liberation of the salmon head sluice gate, due to serious Amoy gate bottom, usually rising tide leak into the most salty water, and the gate is too high, infiltration into the brackish water can not be discharged, to agricultural production has brought great disaster . Moreover, there is a danger of collapse during the typhoon season. Therefore, a new salmon head sluice must be rebuilt. The new gate was built at Niu Tian Yang Beach near the old gate (Figure 1). Soil is Rongjiang silt alluvial layer. No geological drilling, only a simple cone cone exploration work before construction. That is, in the upper gate of the old gate elevation of -1.5 m (Rongjiang elevation, the same below) on the ground, 5 meters from the new gate (Figure 1) at a diameter of 18 mm, 5.5 meters long round steel bars on the ground, Pressure automatically