公式法与数值模拟法在水源地保护区划分中的应用——以北方地区水源地为例

2007年颁布的《饮用水水源保护区划分技术规范》中,提出运用公式法和数值模拟法两种方法对地下水水源地保护区进行划分。本文以北方地区水源地为例,分别应用两种方法对水源地保护区进行划分。通过对比与分析看出,公式法简便易行,但具有较强的主观性,划分结果与实际地质条件脱离较大;数值模拟法能客观详细地刻画实际含水层的结构与水文地质条件,划分结果比较可靠,但应用复杂,概化时也会产生一定的误差。在实际应用中,应将公式法和数值模拟法结合起来加以应用。

The application of formula method and numerical simulation method in water source protection zones dividetaking a water source zone in northern China as an example

In "Technical specifications of drinking water source protection zones divide" promulgated in 2007,formula method and numerical simulation method require adopting in underground water source protection zones divide.Taking a water source zone in northern China as an example,the two methods are used in water source protection zones divide.According to the results,formula method is simple and feasible,but it is more subjective because of the difference between the divide result and actual geological conditions.Numerical simulation method is objective and precise,but it is complicated and with errors in generalizability course.So the combination of the two methods is suggested in practical application.