鱼卡盆地地下水数值模拟与资源评价

发布时间：2018-02-24 07:01

本文关键词： 鱼卡盆地地下水资源评价地下水水流数值模拟地下水开发利用　出处：《吉林大学》2017年硕士论文　论文类型：学位论文

【摘要】：鱼卡盆地隶属于青海省,是一个小型的内陆干旱盆地。该盆地远离海洋,具有典型的高原气候特征,干燥少雨,生态环境非常脆弱。地下水在该地区经济发展中起到了不可替代的作用,但是区内地下水水量、水质情况不容乐观。因此,为了更好的为鱼卡盆地地区提供更好的地下水合理利用和保护方案,本文以鱼卡盆地为研究区,评价了其地下水资源量,并最终确定了研究区的地下水资源开发利用方案。可以有效促进当地经济可持续发展,并且能够保持当地生态环境的健康发展。本文以鱼卡盆地水文地质勘察成果为基础,在查明研究区地质背景、水文地质特征的基础上,建立了鱼卡盆地水文地质概念模型,应用Visual MODFLOW软件进行模拟,并利用区内长观孔的观测水位和模型计算出的地下水水位的拟合程度为校正标准,对模型进行了识别、验证并反演了研究区的水文地质参数,校正后的模型能够真实反映当地实际的水文地质条件和地下水运动特征。通过地下水流数值模拟计算,确定了研究区现状年条件下地下水补给资源量为5793.98×104m3/a,地下水储存资源量为8.05×108 m3。综合考虑生态环境以及现有技术经济条件现状,以湿地适宜区萎缩比例和提水设备扬程为限制指标,确定了现状年条件下地下水允许开采量为3.6×104 m3/d。在此基础上,进一步设计了集中供水水源地的位置和供水方案。研究成果可为区域地下水资源开发利用与生态环境保护提供科学依据。
[Abstract]:The Yuka Basin belongs to Qinghai Province and is a small inland arid basin. The basin is far from the sea and has typical plateau climate characteristics, dry and less rain. The ecological environment is very fragile. Groundwater plays an irreplaceable role in the economic development of this area, but the groundwater quantity and water quality in the area are not optimistic. In order to provide a better scheme for the reasonable utilization and protection of groundwater in Yuka Basin, this paper evaluates the quantity of groundwater resources in Yuka Basin. Finally, the development and utilization plan of groundwater resources in the study area is determined, which can effectively promote the sustainable development of local economy and maintain the healthy development of the local ecological environment. This paper is based on the results of hydrogeological survey in Yuka Basin. On the basis of finding out the geological background and hydrogeological characteristics of the study area, a hydrogeological conceptual model of Yuka Basin is established and simulated by Visual MODFLOW software. The model is identified and the hydrogeological parameters of the study area are verified and inversed by using the observed water level of the long hole and the fitting degree of the groundwater level calculated by the model as the calibration standard. The corrected model can truly reflect the local hydrogeological conditions and the characteristics of groundwater movement. The groundwater recharge resource is 5793.98 脳 10 ~ 4 m ~ (3 / a) and the groundwater storage resource is 8.05 脳 10 ~ (8) m ~ (3) under the present condition of the study area. Considering the ecological environment and the present technical and economic conditions, the shrinking proportion of the wetland suitable area and the lift of the water lifting equipment are taken as the limiting index. It is determined that the allowable exploitation of groundwater is 3.6 脳 10 ~ 4 m ~ (3 / d) d under the present condition. The location and the water supply plan of the centralized water supply source are further designed. The research results can provide scientific basis for the development and utilization of regional groundwater resources and the protection of ecological environment.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P641.6

【相似文献】