均衡法与解析法在地下水资源评价中的应用分析

Contrast Analysis between Balance and Analytic Method for Groundwater Resources Evaluation

均衡法是地下水资源评价的常规方法,解析法作为一种基于地下水动力学的评价方法也时常被采用。用两种方法对利辛县地下水资源进行评价中,分析得出,均衡法原理明确,对各收支项数据的掌握程度要求较高,在各收支项数据充足准确的条件下便于计算,但由于有些收支项数据采集难度大,准确度不高,造成评价结果误差较大;解析法理论严密,对水文地质条件要求苛刻,当各条件均能较好的满足公式假定条件时计算结果精确度高,但当各条件不能很好满足假定条件时,评价结果也误差较大。因此,尝试在进行均衡计算的同时进行解析计算,将两种方法计算的结果进行对比分析,优势互补,可提高地下水资源评价的质量。

Balance method is a normal method of groundwater resources evaluation,analytical method as an evaluation method based on groundwater dynamics is also often used. Comparing the two methods in the application of groundwater resources evaluation in Lixincounty. The result shows balance methodis explicit on principles and requires detailed data of balance items,it is easy to calculate when the data are sufficient and accurate,whereas some balance items data are difficult to collect and not very accurate,so error produced. Theory of analytic method is closely and demanding for hydro- geological conditions,when all the conditions better meet the assumed conditions of formula,the result will be more precision,but if it cannot well satisfy the conditions,the evaluation results error is bigger. Therefore,trying to calculate with the analytical method while with balance method and then compare their result,which can bring complementary advantages and improve the quality of groundwater resources evaluation.