天津市东丽湖地表水热储回灌技术研究

发布时间：2018-05-10 06:20

本文选题：地热资源 + 回灌　；参考：《中国地质大学(北京)》2015年硕士论文

【摘要】：天津市蕴藏着丰富的地热资源,是我国地热资源开发利用较早的地区之一。地热已成为天津市环保能源的重要成员,地热资源的开发利用规模和水平均走在全国前列。作为中国北方的经济中心,天津市对地热资源的需求呈逐年上升的势头,但是随着需求的不断增加,地热资源开采量也不断加大,造成热储压力明显下降,影响了地热资源的可持续开发利用。为了保护地热资源,我们采取了多种技术措施来增加地热流体的回灌量,而采用地表水回灌就是其中之一。在天津的很多地方,丰水期地表水资源非常丰富。因此,选取适宜的地点,利用科学的技术手段对地表水进行有效的处理,使其能够满足回灌的要求,就可以有效的增加地热资源的回灌补给量。地表水回灌是为适应在我市经济建设过程中对地热资源的需求量不断增加而提出的一种对热储层进行补给的新型技术,为地热资源的保护开辟了一条新的道路,具有较高的示范和推广价值。东丽湖旅游区是山岭子地热田的核心地区,也是天津市基岩热储补给的上游地区,地表水资源丰富,若能将该地区的湖水进行科学处理,使其成为满足地热回灌要求的水源,可增加本地区地热流体的回灌量,对地热田集中开采区的热储层起到有效的补给作用。本项目通过收集该区现有地质资料,综合以往回灌试验取得的技术成果,选取蓟县系雾迷山组热储层为本项目中地表水回灌的目的层进行地表水回灌的可行性研究,制定了可行的回灌试验方案。通过前期野外踏勘、现场调研、水样分析及模拟试验等一系列准备工作,最终选定了回灌井位置、确定水质处理工艺并建立了地表水回灌试验基地,应用先进的技术设备和完善的工艺流程对地表水进行预处理,使之达到回灌水源的水质标准。通过分阶段回灌试验对回灌技术方法进行了研究,该项目实现了地表水最大可灌量为152m3/h。本项目对于指导今后回灌工作,推进天津市地热资源的可持续开发利用具有重要的意义。
[Abstract]:Tianjin is rich in geothermal resources, which is one of the early exploitation areas of geothermal resources in China. Geothermal energy has become an important member of environmental protection energy in Tianjin, and the scale and level of exploitation and utilization of geothermal resources are in the forefront of the country. As the economic center of northern China, the demand for geothermal resources in Tianjin is increasing year by year. However, with the increasing demand, the exploitation of geothermal resources is also increasing, resulting in a significant decrease in heat storage pressure. It affects the sustainable development and utilization of geothermal resources. In order to protect geothermal resources, we have adopted various technical measures to increase the amount of geothermal fluid recharge, among which surface water recharge is one of them. In many places in Tianjin, surface water resources are very rich in high water periods. Therefore, select the appropriate place, use scientific and technical means to effectively treat surface water, so that it can meet the requirements of recharge, can effectively increase the amount of recharge of geothermal resources. Surface water recharge is a new technology to recharge thermal reservoir in order to adapt to the increasing demand for geothermal resources in the process of economic construction in our city, and it opens a new way for the protection of geothermal resources. It has high demonstration and promotion value. Dongli Lake tourism area is the core area of Shanlingzi geothermal field and the upstream area of bedrock heat storage and recharge in Tianjin. The surface water resources are abundant. If the lake water in this area can be treated scientifically, it will become a source of water to meet the requirements of geothermal recharge. It can increase the amount of recharge of geothermal fluid in this area, and play an effective role in recharge the thermal reservoir in the concentrated mining area of geothermal field. Through collecting the existing geological data in this area and synthesizing the technical achievements of the past recharge experiments, the feasibility study of surface water recharge is carried out by selecting the thermal reservoir of Jixian system Wumishan formation as the target layer of surface water recharge in this project. A feasible scheme of recharge test was established. Through a series of preparatory work, such as field exploration, field investigation, water sample analysis and simulation test, the position of recharge well was finally selected, the water quality treatment technology was determined and the surface water recharge test base was established. The surface water is pretreated with advanced technical equipment and perfect technological process to meet the water quality standard of recharge source. In this paper, the method of recharge technique is studied by means of stage recharge experiment. The maximum irrigation capacity of surface water is 152 m3 / h. This project is of great significance for guiding the work of recharge and promoting the sustainable development and utilization of geothermal resources in Tianjin.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P314;P641.25

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