【作者】 任双立；

【导师】 党志良；

【作者基本信息】 西安理工大学 ， 环境工程， 2007， 硕士

【摘要】 随着我国城市现代化的发展,在城市大型标志性建筑中,人工湖泊、人工河道等景观水体不断涌现,提高了城市的品味,改善了城市环境。然而景观水体质量恶化却给人们带来了负面效应。因此城市景观水体的治理和维护成为许多城市面临的问题。本文以咸阳湖为研究背景,通过对咸阳湖的水系结构、污染现状的调查与需求分析,对咸阳湖水环境保护进行了探索性的研究。本文在分析国内外现有景观水体大量文献的基础上,考虑城市景观水体自身的特点,对咸阳湖进行了两种状态下的水环境容量计算;在研究咸阳湖自身特点的基础上,根据材料力学中试样的拉伸变形过程与城市景观水体恢复力的相似性原理,探讨景观水体水环境的变化规律,提出了以弹塑性理论的观点来研究城市景观水体恢复力问题,为城市景观水体水环境保护提出新的思维模式;将动态规划方法应用到湖泊水环境污染控制中,进行了费用—效益分析,以最小的经济代价导求水环境质量,建立一个供优化用的经济目标函数,以每个区段的污水处理厂为基础,在水体水质条件的约束下,求解各个污水处理厂的最佳处理效率组合;运用MATLAB/Simulink可视化建模技术对咸阳湖的COD和NH3-N进行模拟和仿真,对咸阳湖的生命周期做了试探性的研究。本论文建立的可视化景观水体水质模型较为真实地反映了咸阳湖的水质面貌,具有较高的准确性和适用性,可以将其应用于中心城区水体水质预测与仿真研究等方面。对于同类型的景观水体水质模拟和水质管理也具有一定的参考价值。更多还原

【Abstract】 With the development of cities, in the large typical buildings of cities, the landscape water body for instance artificial lake, riverway etc come forth constantly. Which improve grade and environment of cities. But the decline of water environment quality in landscape water body will affect negatively the townsman. Therefore, the governance and maintain of landscape water body has become a hot spot problem in cities. Take Xian Yang lake as background, this paper has done physical research on the basis of water system structure and analysing pollution present situation of Xian Yang Lake.Based on analyzing water pollution controlling technique of national in and out on landscape water body, consider city landscape water experiences and observes oneself characteristic, calculating water environment capacity of Xian Yang Lake under two status. On the basis of analyzing the character of landscape water body, the paper inducted comparability of landscape water body resilience and the transformative process of sample in mechanics,and suggested studying on the problems of resilience in landscape water body of city using the theoretics of nonlinear on the basis of variational rule of water environment in landscape water body, put forward a new solution to protect water environment in landscape water body. Put dynamical programming methods into water environment controlling of lake.Calculating best disposal efficiency combination of each sewage disposal factory based on sewage disposal factory and water quality condition restriction. That is, made sewage disposal cost of whole valley least, at the same time, met water quality goal from adjusting disposal efficiency of each disposal factory.The paper systematically presents an application of numerical models running upon the platform of MATLAB/Simulink, which visually simulates and emulates the COD and NH3-N in the Xian Yang Lake.The results show that the model has high accuracy and suitability relatively. It could be applied to predict, evaluate, simulate and emulate the engineering effect on the water body of urban region other than Xian Yang Lake also.更多还原