xx河西控工程对xx区的防洪影响分析.doc

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摘要

从二十世纪八十年代开始，随着社会经济的快速发展，由于治理水污染的观念和力度跟不上地区生产生活水平的高速发展，太湖水质逐年恶化，现状综合评价劣于Ⅴ类，严重影响到了人民群众的饮用水安全以及经济社会的可持续发展。xx河西控工程的实施就是为了防止xx河西岸的污水排入xx河，同时减少“引江济太”工程的清水流入西岸，从而提高“引江济太”工程的效果，更好地改善太湖地区水质，改善人民群众的用水质量和区域生态环境。但是西控工程实施的同时也会造成降雨时西岸河道水位上涨无法正常排洪等问题，带来防洪方面的安全隐患。

本文通过收集锡山区相关自然地理、水文气象等资料，在降雨量资料的基础上计算研究区域的设计雨量，并利用同频率法推求设计暴雨过程，之后利用MIKE软件在分析率定模型参数后建立太湖流域河网模型，进行地区汇水区域的划分和模型产汇流计算，最后计算西岸封闭前后锡山区水系各节点的洪水位，并进行水系水文特性和洪涝特性的变化分析，同时为研究区域的防洪提供相应的对策。

关键词：xx河西控工程；防洪；设计暴雨；MIKE模型；水位 

 

Abstract

    From the beginning of the 1980s with the rapid development of social economy ,yearly deterioration of water quality in Taihu Lake and the water quality worse than class V because of the concept of water pollution control can not keep up with the rapid development of production and living standards,this heavily impact on the sustainable development of social economy and the water safety.West Wangyu river control project implementation is to prevent Wangyu West Bank sewage into Wangyu river and reducing the water flow into the West Bank, improve the effect of "Yin jiang ji tai" project and prevent the clean water flow into Wangyu river, to better improve the Taihu Lake region water quality, improving the people's water quality and regional ecological environment. But while Western control implementation of the project will cause rainfall in the West Bank can not be normal drainage river ,river`s water level rise and other issues, bringing flood risks.

    By collecting the Xishan District of related natural geography, hydrology and meteorological data to calculate the design rainfall of study area. Next use the same frequency method to calculate the process of rainfall. After these, use MIKE software to establish the Taihu Lake Basin river model and use the model to calculate the runoff of the study area. Finally calculating flood level of Xishan District’s river while close or open the Western Bank of Wangyu river. And analysis the hydrological characteristics of river and flood characteristics changes, provide appropriate countermeasures to prevent flood.

Key words: Wangyu river western control engineering; Flood control; Design rainfall; MIKE software; Water level