数值模拟方法在岩溶大泉泉口集中供水评价中的应用研究

APPLICATION OF NUMERICAL SIMULATION METHOD TO THE EVALUATION OF LARGE KARST SPRING DISCHARGE AS WATER SUPPLY

在地下水流数值模拟中，一般将泉水概化为已知的汇项来处理，而预测水源地的开采对泉水的干扰影响时，泉流量是待求的。利用数学模型的调节反馈功能，通过将延河、下河泉区水位近似恒定作为约束条件，逐时段反复调试泉水流量进行水位拟合，较好地解决了延河泉域人工开采干扰泉水溢流量预报这一难题。

In general,spring discharges are generalized as sinks in the course of groundwater simulation. However, they are unknown only when their changes caused by the developing of groundwater at water supply base are predicted. Using feedback adjusting function of mathematic model, we adjusted the spring discharges on computer to fit the water levels of nodes in Yanhe,Xiahe spring areas step by step on the assumption that the node levels are invariable although they in fact have a little drawdown in the prediction,and eventually gained the influence that the operation of water supply base in coalfield would exert on the springs.