宁夏清水河平原中游地下水数值模拟

Numerical Simulation of Groundwater Flow in the Qingshui River Plain,in Ningxia Province

清水河平原工业和农田供水水源多位于冲洪积扇中下部,部分位于扇前缘细土平原带,距咸水蕴藏区较近。随着地下水开采量的不断增加,出现大面积地下水位降落漏斗,造成咸水倒灌使有限的淡水资源遭受和面临咸水"入侵"的危险,已影响地下水资源的永续利用。本文在对清水河中游水文地质条件进行分析与概化的基础上,运用GMS软件建立了研究区多层地下水水流数值模拟模型,以现有开采条件对地下水流场的变化趋势进行了预测。根据模拟得出区域地下水位不断下降,地下水降落漏斗面积不断扩大。据此提出了合理利用地下水资源的措施,以保证该地区地下水资源可持续发展。

The source of the water supply of the industry and farmland in Qing--Shui River plain. Long term of intensive extraction of groundwater has caused many problems in Qinshui river plain , such as groundwater level declining, and lead to salt water inverse pore, then made fresh water suffering from and facing with the danger that is mixed up by salt water, which had affected sustainable utilization of groundwater. According to the hydrogeological conceptual model, the three dimensional numeric model is established. Based on the model, the change of groundwater level is forecasted. The paper also supplies some suggestion about some reasonable measures in utilizing groundwater in the studied area.