定水头补给半无限带状含水层矿坑涌水量评价

Prediction of the inflow water into a pit in a semi-infinite zonal aquifer under the condition of constant water head

摘要: 通过对广西某石灰岩矿区水文地质条件的分析,对该水文地质单元的水文地质模型进行概化,推导出了定水头补给半无限带状含水层中完整井流公式,并运用该公式对开采条件下矿坑涌水量作了评价。最后,运用传统的逐个干扰井叠加法对该公式的评价结果进行验证,结果表明,当映射叠加次数足够多时,其计算结果极为相近。但就其计算方法而言,映射叠加方法较为繁琐,而运用该公式计算则显得较为方便。

Abstract: Based on the analysis of hydrogeological conditions of a calcite mine area in Guangxi Autonomous Region,China,a hydrogeological model was generalized,and a formula for a complete penetrating well flow in a semi-infinite zonal aquifer with a constant recharge water head has been deduced.The formula is used to predict the inflow of water into the pit.The traditional method of interferential wells is used to validate the evaluation result.The results show that both the results are extremely closed under the condition of large numbers of projection times.However,using the formula is more convenient compare the stacking method of interferential wells in terms of calculation methods.