Coastal Reclamation Closure Hydraulic Calculations And Research

China's inadequate per-capita share of land resources is becoming more and more serious. Particularly, when china's economic development and social progress accelerated in the past decades. The gap between land supply and demand is still expanding. Land reclamation from sea is a better method to solve the problem especially in china's eastern coastal areas. Many countries and regions in the world have exploited their coastal zones and tide land resources to increase provision of land.Land reclamation project encircles the sea to make land, It has three main sections:dike,sluice gate and dyke enclosure.Sea dyke is the main part of the reclamation project,which bears the load of waves,storms and streams. Soft clay ground treatment and infiltration closure are the two key technique problems. Sluice gate's main function is to separate the stream of entrance, usually constructed before enclosure begins, together with dyke's main section. Dyke enclosure is the most crucial and the latest part of sea reclamation engineering. At this stage,dyke enclosure confronts very severe hydraulic conditions, head drop of the flow can reach 2-3 m, the maximum flow velocity probably can reach up to 6-8 m/s. Appropriate enclosure steps and precise hydraulic calculation are needed before enclosure project begins.This dissertation firstly introduces the present status of reclamation project. Secondly, analyzes the character of China's reclamation project, summarizes the hydraulic calculation theory and practical experience;Thirdly, uses commercial software CFX to simulate the hydraulic parameter of fast enclosure stage, especially simulates velocity distribution patterns on horizontal two-dimensional plane. Preliminarily studies the law or velocity variation pattern in pace with tidal action. Lastly, using the CFX model, calculates the hydraulic parameter of a maritime park project.