石川河地下水库建库条件分析及地下水位动态预测

通过分析富平县石川河河谷阶地区的自然地理、气象、水文、地质等条件以及地下水资源开发利用情况,建立了水文地质结构三维模型,论证了建立石川河地下水库的可行性,初步计算了地下水库库容约为4.95亿m~3。利用Visual MODFLOW软件建立了地下水库库区的地下水数值模型,预测了不同降水和开采条件下,进行人工回灌0.52亿m~3/a、10年后地下水库库区的地下水位变化情况。结果表明,库区内的地下水位将大范围的抬升,大部分地区与1959年的水位相近,可基本满足当地的用水需求。

Analysis of groundwater reservoir construction conditions and prediction of groundwater level variation in Shichuan River groundwater reservoir

Based on analyses of physiographic, meteorological, hydrological, and geological conditions, as well as groundwater resources development and utilization in the valley terrace of the Shichuan River, in Fuping County, a three-dimensional hydrogeological structure model was built, and the feasibility of the establishment of the Shichuan River groundwater reservoir was demonstrated. The storage capability of the groundwater reservoir was about 4. 95×10⁸ m³. The variation of groundwater level ten years after the implementation of artificial recharge with the amount of 0. 52×10⁸ m³ per year under different precipitation and pumping conditions was predicted through groundwater numerical simulation with the Visual MODFLOW software. The results show that the groundwater level of the reservoir would rise considerably, with the water levels in most parts of the reservoir area approximating the level in 1959, indicating that the local water demand could be basically satisfied.