解析法和数值法在丘陵地区矿坑涌水量预测中的比较

丘陵地区地下水资源不丰富，依赖于地下水的生态环境也比较脆弱。在开采该地区的矿产资源过程中，采矿排水对周边地下水资源的影响应成为值得注意的问题。以安徽省庐江县某一铁矿为例，采用解析法和数值法分别对该矿矿坑涌水量进行预测，并将两种方法的预测结果进行了对比分析。结果表明：在-500 m开采条件下，计算结果分别为41991．44 m3/d和3150 m3/d，得出数值法更适合水文地质复杂条件下矿坑用水量的预测，且与实测结果较为吻合，具有一定实用性，可为矿山制定防排水方案提供依据。

A Comparison between Applications of Analytical Method and Numerical Method in Forecasting Quantity of Gushing Water in Mine in Hilly Area

In the hilly area, groundwater resource is not abundant and the ecological environment depending on groundwater is fragile.Therefore,special attention should be paid for the influence of sewage generated during mining on surrounding groundwater re -sources.Therefore, in the course of the exploitation of mineral resources in this sort of area , the influence of mining drainage on sur-rounding groundwater resources deserves attention .Illustrated by the case of a certain iron mine in Lujiang County , Anhui Province, analytical method and numerical method are used in forecasting quantity of gushing water in mine .The comparison between results generated by the two method indicates that the quantity of gushing water in mine respectively are 41991.44m3/d and 3 150 m3/d when the depth is -500 m.The number calculated by numerical method is much closer to the result of field survey , which is more practical and more applicable to forecast quantity of gushing water in mine , which located in a complicated hydro -geological condition .The calculation could be used as a reference for drainage scheme .