扬州中心城区河网基于水质改善的闸泵联合调度研究

发布时间：2018-07-09 23:11

本文选题：水质改善 + 联合调度　；参考：《扬州大学》2017年硕士论文

【摘要】：扬州是一座缘水而建、因水而兴的历史文化名城,然而由于近年来城市的扩张式发展导致局部水系遭到破坏,内城河上游因城区北部蜀岗分水岭的阻隔无补给水源,沿途承受漏排污水、雨水面源污染和底泥污染,水质不能自净,易产生水体黑臭和藻类繁殖现象。为消除水体黑臭,改善景观水体质量,扬州市定期引入邵伯湖水,实施引水冲污工程。虽一定程度上改善了内河水质,但仍存在调度方案凭经验、科学性不高、冲污效果不好等问题。本文先阐述了闸泵调度机理、国内外工程实例及河网水动力、水质数学模型的国内外研究进展,根据基本方程和求解方法建立扬州中心城区河网一维水动力水质耦合模型,研究水量水质联合调度。通过搜集扬州市水环境状况等有关资料,对建立的一维水动力水质模型进行验证。计算扬州闸闸门不同开度下,水体的TN、TP、氨氮和高锰酸盐指数的平面分布及变化过程;扬州闸同一开度,不同月份污染物浓度的降解情况。分析引用邵伯湖水对于增加研究区域水资源量、增强水体自净能力、改善中心城区水体水质效果。针对现状引清调度方案的缺陷,提出闸泵联合调控措施,通过一维水动力水质耦合模型对拟定方案进行模拟演算,综合分析各工况的水质改善效果,优选出科学实用的闸泵调控方案。与此同时,为更好发挥水利工程对区域水环境改善、环境,生态等作用,结合我国目前水利工程生态与环境调度发展的现状和实际工作中存在的阻碍,提出切实可行的建议,为在水质型缺水地区解决水资源配置和跨区域生态调水难题提供了借鉴。
[Abstract]:Yangzhou is a famous historical and cultural city built by water. However, due to the expansion of the city in recent years, the local water system has been destroyed, and the upper reaches of the inner city have no water supply due to the barrier of the Shugang watershed in the northern part of the city. Along the way, the sewage was drained, the Rain Water pollution and the sediment pollution, the water quality could not be self-clean, and it was easy to produce water black-smelling and algae breeding phenomenon. In order to eliminate the blackness of water and improve the quality of landscape water, Shaobo Lake water was introduced into Yangzhou City regularly and the project of water diversion and scouring was carried out. Although the water quality of inland rivers has been improved to a certain extent, there are still some problems such as the experience of dispatching scheme, the lack of scientific nature and the poor effect of washing pollution. In this paper, the mechanism of sluice pump dispatching, engineering examples at home and abroad and the research progress of water power and water quality mathematical model of river network at home and abroad are described. According to the basic equation and solution method, the one-dimensional hydrodynamic water quality coupling model of Yangzhou central urban river network is established. To study the combined regulation of water quantity and water quality. The one-dimensional hydrodynamic water quality model is verified by collecting relevant data of Yangzhou water environment. The plane distribution and variation process of TNP, NH3-N and permanganate index were calculated under different opening of Yangzhou sluice gate, and the degradation of pollutant concentration in the same opening degree of Yangzhou sluice in different months was also calculated. This paper analyzes the effect of using Shaobo Lake water to increase the amount of water resources, strengthen the self-purification ability of water body and improve the water quality in central urban area. In view of the defects of the current situation, the combined control measures of sluice and pump are put forward. The one-dimensional hydrodynamic water quality coupling model is used to simulate and calculate the proposed scheme, and the effect of water quality improvement under various working conditions is analyzed synthetically. Select the scientific and practical control scheme of the sluice pump. At the same time, in order to give full play to the role of water conservancy projects in the improvement of regional water environment, ecology and so on, combined with the current situation of water conservancy engineering ecological and environmental regulation development and the existing obstacles in practical work, some practical suggestions are put forward. It can be used for reference to solve the problem of water resources allocation and cross-regional ecological water transfer in water-quality water-deficient areas.
【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X52

【参考文献】