摘要
为缓解北京城区的用水紧张问题,平谷区建立了王都庄和中桥两个应急水源地。持续过量的开采导致盆地内水位急剧下降。为研究大规模开采对平谷盆地地下水系统的影响,并分析不同地区的开采潜力,本文建立了合理刻画三维地下水流动特征的数值模型,对五种不同的开采方案进行模拟。模拟结果表明,丰水条件下地下水位回升明显,王都庄水源地补给条件优越,尤其是盆地上游地区,具有更大的开采潜力;而盆地中下部应适当限制开采,避免水位下降过快。高仿真的数值模型可作为强有力的管理辅助工具,为地下水资源分析及合理利用提供科学的技术支持。
As the capital of China,the city of Beijing faces a serious threat of groundwater over-exploitation.In order to lighten the contradiction between water demand and water supply,two emergence wellfields were constructed in the Pinggu basin located in the eastern Beijing.Continual over-exploitation of groundwater led to a sharp decline in water levels in the basin,especially near the wellfields.The main intent of this study is the development of a 3-D transient groundwater flow for analyzing the water-containing conditions and exploitation potential.Using the validated model,several pumping scenarios were simulated and the results were analyzed.Based on the comparison of all the simulation results under different scenarios,the influence of precipitation and the amount of groundwater exploitation on the heads were analyzed quantitatively.The potential exploitation for various parts of the basin were gained and then the adjustment measurement of the amount of exploitation were forecasted to make the heads recovery.The suggestions related to the exploitation distribution were also given.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2011年第2期27-34,共8页
Hydrogeology & Engineering Geology
基金
环保公益性行业科研专项经费项目(200709055)
国家重点基础研究发展(973)计划(2010CB428801)
北京市地下水资源安全评价及污染防控技术研究与示范(D07050601510000)
关键词
平谷
地下水
水源地
数值模拟
多情景
Pinggu
groundwater
wellfield
numerical simulation
scenarios
