太和县经开区地下水开采方案研究

发布时间：2018-03-06 15:48

本文选题：孔隙承压水　切入点：孔隙潜水　出处：《合肥工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：太和县经济开发区位于安徽省淮北平原中西部,依颍河而建,受颍河水质约束,开发区生活和工业用水现状基本依靠开采埋深50~300 m的松散孔隙水,松散孔隙水、尤其是孔隙承压水开采强度大,已诱发一些不良影响。随着发展,需水量逐渐增大;因此,根据区域水质条件改善进程、重大水利工程--引江济淮的实施,对地下水进行科学、合理地管理,是十分必要的。根据开发区总体规划,2020年规划用地面积为10.21 km2,需水总量8.0万m3/d。区内用水组成,可分为三大类:生活用水、医药及食品生产用水等高水质用水,需水量为1.77万m3/d;一般工业用水3.81万m3/d;对水质要求比较低如电厂冷却用水等工业用水2.42万m3/d。根据用户水质要求、依据水资源的水质条件,采用分源、分质供水:高水质用水,由水质优良且水质动态稳定的孔隙承压水供给;一般工业用水,主要由近年来水质有所改善的颍河供给,孔隙潜水补充;对水质要求比较低的,由开发区污水处理厂生产的中水供给。在分源、分质供水原则下,以最大程度满足需水为目标、以不形成地下水超采为约束,对现阶段地下水开发利用方案进行研究;引江济淮工程实施,将对地区水资源供需形式产生重大影响,根据引江济淮分水方案,对未来地下水开发利用方案进行比选调整。地下水开发利用方案比选,利用Visual MODFLOW软件,建立地下水流数值模拟模型;以现有承压开采井为基础,结合可行的潜水开采布局,对各开采井的开采量及开采过程、各层位开采总量进行合理设置。设置四种不同开采方案,经比选模型模拟结果,确定合理开采方案:引江济淮实施前,孔隙承压水开采量为10397 m3/d、孔隙潜水开采量为14882 m3/d;引江济淮实施后,分配开发区水量为16782 m3/d,孔隙承压水开采量为2310 m3/d、孔隙潜水开采量为6187 m3/d。
[Abstract]:Taihe County Economic Development Zone is located in the central and western part of Huaibei Plain in Anhui Province. It is built according to the Yinghe River and is restricted by the water quality of Yinghe River. The present situation of living and industrial water in the development zone basically depends on the exploitation of loose pore water with a depth of 50 ~ 300 meters and loose pore water. Especially, the exploitation intensity of pore confined water is high, which has induced some bad effects. With the development, the water demand increases gradually. Therefore, according to the improvement process of regional water quality conditions, the implementation of major water conservancy project-diversion of water resources from the Yangtze River to Jihuai River, the groundwater is scientifically carried out. According to the overall plan of the development zone, in 2020, the planned land area was 10.21 km2, and the total water requirement was 80,000 m3 / d.The water used in the area could be divided into three categories: domestic water, pharmaceutical and food production water, etc. The water demand is 17,700 m3 / d; the general industrial water use is 38,100 m3 / d; the water quality requirements are relatively low, such as the cooling water for power plants, and so on. According to the water quality requirements of the users, according to the water quality conditions of water resources, the water supply is divided into sources and quality: high water quality. It is supplied by pore confined water with excellent water quality and stable water quality; general industrial water is supplied mainly by Yinghe River, which has improved water quality in recent years, and pore phreatic water is replenished; the water quality requirements are relatively low, The reclaimed water supply produced by the sewage treatment plant of the development zone. Under the principle of dividing the source and the quality of the water supply, taking the maximum degree of water demand as the goal and not forming the groundwater over-exploitation as the constraint, the paper studies the development and utilization scheme of the groundwater at the present stage. The implementation of the Jiangjiji-Huai project will have a great impact on the supply and demand of water resources in the region. According to the scheme of diverting water from the Yangtze River to the Jihuai River, the scheme of groundwater exploitation and utilization in the future will be compared and adjusted. The numerical simulation model of groundwater flow is established, based on the existing confined production wells and combined with the feasible layout of submersible exploitation, the exploitation amount and the total production amount of each layer of each production well are reasonably set up, and four kinds of different mining schemes are set up. According to the simulation results of comparison and selection model, the reasonable mining scheme is determined: before the implementation of the diversion of Jiangji-Huai River and Huaihe River, the pore pressure water extraction is 10397 m3 / d, and the pore phreatic exploitation is 14882 m3 / d; after the implementation of the introduction of Jiangji-Huai River and Huaihe River, The amount of water allocated to the development zone is 16782 m3 / d, the pore pressure water extraction is 2310 m3 / d, and the pore phreatic exploitation is 6187 m3 / d.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P641.8

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