潜堤对海堤口门区水流条件的削弱及应用

港口航道工程和围海工程都存在口门区水流问题,前者影响船舶的通航安全,后者影响工程的合龙施工安全,是重要的工程技术问题.为此,概化实际工程案例,建立局部小变率物理模型,研究口门区削流的潜堤工程措施,结果显示:①一定条件下,潜堤具有明显的削流作用,且工程量相对较小,可以作为口门区水流条件改善的一种工程措施;②本文的应用实例虽然是针对航道工程的,但是对于水力条件恶劣的围海工程,也具有一定的参考价值;③潜堤的削流效果和工程的布置、工程区的水文条件有关,需具体问题具体分析.

Improvement effect of flow conditions of entrance area using submerged breakwater

There are a great deal of bad flow patterns at the entrance area of waterway engineering and land reclamation engineering,which can cause a big influence for navigation safety or cofferdam blocking-off safety.So,the paper constructed the physical model of small scale rate through a practical project;and the improvement effect of a submerged breakwater on flow conditions of the entrance area through the creation of physical model had been studied.The main achievements are summarized as follows:① In certain conditions,a submerged breakwater is one of the efficient countermeasures to improve flow conditions at the entrance area;② For the process of cofferdam blocking-off in the land reclamation engineering,the results of this research will provide valuable reference;③ The improving effect of a submerged breakwater is related to project layout and hydrological conditions and so that lead us to make concrete analysis of concrete problems.