基于数值模拟的石佛寺水库陈平堡段浸没预测

Immersion Prediction of Chenpingpu Section of Shifosi Reservoir Based on Numerical Simulation

根据收集的钻孔数据,利用Solid建模法对石佛寺水库浸没区进行三维地质建模,并采用虚拟钻孔方法对模型进行细化,使模型接近真实情况,将实测值与模拟值进行对比验证模型的准确性。由验证结果可知,利用虚拟钻孔法构建的三维地质模型可很好地运用于水库浸没预测,并可计算出水库不同蓄水位下的浸没区地下水等水位线。利用浸没程度评价方法和网格布点法绘制出不同蓄水位时浸没区域分布图进行分析预测,结果显示当蓄水位高于45 m时严重浸没区范围较大,对库区周边居民的生产生活有不利影响。

Solid method was used in this paper to create 3D geological modeling of the immersion area in Shifosi Reservoir based on collected borehole data,and then the model was refined by the virtual drilling method,which made the model close to the real situation. The accuracy of the model was verified by the comparison between the simulated results and the actual value. The results show that the 3D geological model constructed by virtual borehole data can be well used in reservoir immersion prediction. Using the reliable model,the contour map of groundwater in the immersed area under different reservoir storage levels can be obtained. Evaluation method of immersion was combined with grid distribution point method to draw immersed area distribution map for prediction and analysis. The analysis results show that when the storage level is above 45 m,the serious immersion zone is large enough to have certain influence on the production and life of the people around the reservoir area.