淤泥质峡道海岸港口淤积计算研究

CALCULATION ON DEPOSITION IN MUDDY CHANNEL COASTAL HARBOR

我国已在淤泥质峡道海岸地区建设供超大型船舶作业的深水港。淤积是港口建设和正常使用时需要解决的主要技术问题之一。该类港口由于所处的地域环境.在港口淤积计算研究时有其特殊性。本文主要以中国石化总公司镇海炼化公司算山码头为例。并以宁波港北仑港区和舟山港野鸭山岸两例为辅进行淤积研究。在潮流数值模拟的基础上.对港区在自然状态下、挖泥增深后的淤积进行研究.提出经过实践验证的峡道淤积计算模式,其中包括陡坡下滑港池的泥沙计算。计算结果与实际结果相符。

Some deep water harbors. which are used for docking super-large ships. have been built along muddy channel coast in China. Deposition is one of the major technical prob-liems in port building and operation. Such special environmental features give rise to the particularity in the calculation on the deposition of the muddy channel coastal harbors. In this paper, the deposition in such harbors under natural conditions and after dredging are tackled on the basis of tidal current numerical simulation, using the deposition data from the Suan-shan Wharf of China Oil and Chemical Corporation and from the Beilun Harbor and Yeyashan area in the Zhoushan Harbor as well. A practice-proved calculation model has been advanced for channel deposition calculation- which is also applicable to the condition of the harbors where deposition comes from slipping sediments from steep slope. The calculation results are consistent with observations.