FEFLOW软件在地下水动态预测中的应用

在分析大屯中心区地质及水文地质条件的基础上，运用GIS技术确定了研究区范围和定解条件，建立了地下水系统概念模型和数学模型，利用基于有限元原理的FEFLOW软件对模型进行求解，用水文观测井的地下水动态观测资料，对数值模型进行了识别和校验。运用识别后的数值模型对研究区地下水动态进行预测，表明大屯中心区Ⅰ＋Ⅱ含地下水属于周期性变化的动态类型，在现状开采下，降水能够以丰补歉，降落漏斗基本稳定。

Application of FEFLOW to Groundwater Dynamic Forecast

Based on the analysis of the geological and hydro - geological condition in Datun central area , GIS technology was used to determine the scope of the study area and to construct the conceptual and mathematic model of the groundwater system. Using FEFLOW software based on the finite element theory, this paper solved the mathematic model and created the numerical model, and calibrated the model by the observed dynamic water level of groundwater. Using the calibrated model, we forecasted the evolution tendency of groundwater dynamic in the study area, which indicated the Datun central area Ⅰ and Ⅱ aquifers belong to the periodic variation dynamic type and the precipitation can replenish the weak from the abundant, and the descending funnel is basically stable under the present mining condition.