梯度法在水文地质参数估值中的应用  

Application of gradient method to calculation of hydrogeological parameters

作　　者：刘立才[1] 陈鸿汉[1] 张达政[1] 

机构地区：[1]中国地质大学(北京)水资源与环境学院,北京100083

出　　处：《水文地质工程地质》2003年第3期39-41,共3页Hydrogeology & Engineering Geology

摘　　要：根据地下水的抽水试验求含水层的导水系数和储水系数时,传统的计算方法是配线法和直线图解法。这两种方法比较繁琐,且人为误差较大。本文运用数学模型的最优化方法即梯度法,并借助于计算机编程,实现了水文地质参数的数值求解。计算结果能消除人为误差,准确反映含水层的参数特征。Transmissivity and storativity are two important parameters in hydrogeology. They can be calculated by using the data of the pumping test. The traditional calculation methods are type curve method and straight line method. These two methods are relatively complex and calculation results have a big artificial error. By dint of computer program this paper uses the nonlinear optimization, known as gradient method, to complete the numerical solutions of the hydrogeological parameters. The visual interface is very clear and the operation is easy. The calculation results can accurately reflect the characteristics of the aquifer.

关 键 词：梯度法 水文地质参数 地下水 抽水试验 含水层 导水系数 储水系数 数学模型 计算机 

分 类 号：P641[天文地球—地质矿产勘探]