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题名	塔中油田地下水位变化趋势与模拟
作者	魏亚平
答辩日期	2017-05-01
文献子类	硕士
授予单位	中国科学院大学
授予地点	新疆乌鲁木齐
导师	徐新文
关键词	地下水 数值模拟 潜水蒸发 塔克拉玛干沙漠 Groundwater Numerical simulation Phreatic water evaporation Taklimakan Desert
学位专业	农学硕士
英文摘要	The Tazhong oilfield in the hinterland of Taklimakan Desert has a rich oil and gasresource, groundwater resources are particularly important due to extreme droughtconditions. The regional groundwater hydrological process is taken as the research object,in the paper, the temporal and spatial variation of groundwater depth was observed, and thehydrogeological parameters were calculated by GIS technique and pumping test toestablish the prediction model of groundwater flow system, and to clarify the mechanismof water movement. The numerical model of groundwater response process wasestablished on the condition of high strength pumping to determine and predict theresponse of the groundwater situation change situation in the future to solve thecontradiction between the resources development and water resources utilization, andconduct the scientific countermeasures for sustainable utilization of groundwater in thestudy area. The goal of this study is to explore the method to improve the accuracy ofgroundwater simulation model in the study area, and to provide scientific basis forsustainable utilization of groundwater resources in the study area. The main results are asfollows:(1) In the study area, the groundwater level decreases with the increase of time. Thevariation of water level is closely related to the pumping project and temperature. Thewater level was higher during the winter break period of 11-2 months, and the water levelshowed a downward trend due to the rise of temperature and the interference of humanactivities. The article used the regression deconvolution method to calculate the pressure ofthe unsteady flow pumping test in the unconfined aquifer, three non pressure models areused to calculate the hydrogeological parameters. The results show that except the Boultonmodel can not run successfully, the other two parameters are obtained. The Theis withJacob model to calculate the water conduction coefficient T = 8.96 E2 m2/d, water storagecoefficient S = 6.11 E -2; and the results of Neuman model for T = 8.76 E2 m2/d, Sy = 5E-1, Kv/KH = 1.12 E-3, Sy/S = 1 E1, calculated the permeability coefficient of K were13.6m/d and 13.3m/d.(2) The study area is in the interland of desert, groundwater recharge mainly rely onSouthern meltwater supply, the water depth in there is more than 5m, the phreaticevaporation is 0.986mm/a gaind by the equation of evapoeration , we can see that althoughthe climate is extremely dry, but due to the depth of water level is relatively deep, the vauleof phreatic evaporation is small, and the ground water is mainly used for human activities.(3) the MODFLOW software is used to simulate the change of groundwater level inthe study area and the development plan is assumed to predict the groundwater flow fieldin the future. The results show that the pumping process does not have a significant impacton the groundwater flow field in the hinterland of the hinterland. In this paper, by assumingthat the 5 schemes, the results are as follows: in the water supply capacity, the scheme 5>scheme 4> scheme 2> scheme 3> scheme 1; the cost, the scheme 5> scheme 3> scheme 4>scheme 2> scheme 1; all of the water supply schemes were not have no obvious influenceon the groundwater level. Through comprehensive consideration, when the water demandis very large, the choice of program 4 is the most optimized, if the water demand in thecontrol of the program 2, then select the most appropriate program 2.
语种	中文
学科主题	水土保持与荒漠化防治
内容类型	学位论文
源URL	[http://ir.xjlas.org/handle/365004/14905]
专题	新疆生态与地理研究所_研究系统_荒漠环境研究室
作者单位	中国科学院新疆生态与地理研究所
推荐引用方式 GB/T 7714	魏亚平. 塔中油田地下水位变化趋势与模拟[D]. 新疆乌鲁木齐. 中国科学院大学. 2017.

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