【作者】 于福荣；

【导师】 卢文喜；

【作者基本信息】 吉林大学 ， 水文学及水资源， 2007， 硕士

【摘要】 黄龙工业园引水工程建设在公主岭市西部,为保证供水工程的水量和水质能够满足黄龙工业园的需水要求,需对拟建水源地地下水现状做出评价与分析。本文本着定性分析与定量计算相结合、传统计算方法与现代计算方法相结合的原则,在充分研究区域地质、水文地质情况下,建立研究区水文地质概念模型,建立地下水水量数学模型,采用基于限元法的数值模拟软件FEFLOW求解,并预测了在给定的地下水开采方案下的地下水流场,确定了开采方案的合理性。用改进的尼梅罗污染指数法对研究区地下水水质进行了评价。建立研究区地下水溶质运移模型预测了水源地运营后对地下水潜水水质的影响。以水量水质研究为依据,提出了相关的水资源管理整治建议,为该水源地生态环境和社会经济的协同可持续发展提供了科学依据。更多还原

【Abstract】 In rencent years, with sharp increase of groundwater demands, people begin to pay more attention to water environment protection, the numerical simulation of groundwater flow and transport of pollutants already have become an important research field in hydrogeology .The huanglong industrial park is located in western Gongzhuling city. In order to ensure that there is enough amount of water provided to the industrial production, it is necessary to evaluate and analyze the present situation of the groundwater. Therefore, the study on the groundwater level and the water quality ,and conceiving the rational exploitation plan in this area is meaningful for the ecology construction and economic development of the region.Firstly, this thesis introduces the study status in quo domestic and abroad of groundwater numerical simulation and the common solving method of groundwater numerical simulation model and the simulation software. Two solving methods which are the finite difference method and the finite element method are introduced in detail, three popular professional softwares which are FEFLOW,Visual MODFLOW and GMS are introduced. After comparative analysis, FEFLOW which based on the finite element method is used for this study.Based on collection and analysis plenty of material about geology and hydrogeology in GongZhuling area, this paper systemically represent the lithology of main stratum, existing condition, distribution regularities, circulation condition and the dynamic character of groundwater in study area. Then, this paper ascertains the scope of simulation region and the selective zone of calculation. After generalize the aquifer hydraulic characteristic, vertical boundary and lateral boundary, the groundwater mathematical model has been founded on the basis of the hydrogeology conceptual model. The dry season in May 30th 1985 is selected as the initial time of recognition period of model, the flood season in August 30th is selected as the end time. Because the simulation effect of identification and inspection is good, groundwater flow nets in the study area in next twenty years is predicted using the founded model. Prediction is made under the conditions of that the phreatic water yield is 5000 m3/d and the confined water yield is 15800 m3/d. From the change tendency of many years, constant decline in the groundwater table didn’t appeared. It shows that the yield quantity is almost equal to the recharge quantity under the condition of that groundwater is exploited in this yield quantity,yield quantity is almost balanced to the recharged quantity. There is recharge guarantee for exploiting groundwater with the designed project.Once groundwater was polluted due to the reasonless developmemt and utilization, it will infect the entirenment seriously, and will badly endanger the health and activity of pepole. So the compositive evaluation of groundwater quality is an important work to the development and utilization of groundwater resources.This text applicates the improved Nemerow index method to the evaluation of water quality in study area. The results show that phreatic water quality is bad and the confined water quality is good. In comparison with practical situation, it is revealed that the evaluation results is rather accurate. Based on the estimating of water quantity model and water quality model,this paper establishes the groundwater solute transport simulation model. The analytic solution about model has been gotten by using Laplace transform. Finally,this paper selects DO,BOD5, CODcr, total phosphorus,ammonia nitrogen and adopts average weighted method to evaluate the phreatic water quality of expoitation area. Oweing to the important impacts of r Dong Liao river on phreatic water quality , we should strengthen the management .更多还原