江西城门山矿露采场疏干预测

本文在分析矿区水文地质条件并加以简化的基础上,对含水层的边界条件及非均质性作了技术处理,从而确定了矿区水文地质计算模型,然后运用泰斯非稳定流理论建立求解疏干流量的数学模型。在规定的疏干要求下,预测了各阶段的疏干流量及相应的疏干时间。文中对阶梯流量迭加计算过程,当含水层为承压—无压状态下,如何确定水力传导系数,提出了新的方法。

DRAINAGE PREDICTION OF OPENCUT MINING AREA IN CHENGMENSHAN MINING, JIANGXI

To set up a mathematical model of mining area groundwater system, this paper begins with a general statement and then simplifies how the problem is to be solved by technical treatment of boundary condition and heterogeneity of groundwater aquifer in mining area. We will then employed Thies theory to set up the mathematical model for solving drainage problem. Under the given drainage request, we have predicted each step's drainage production with time. This paper has developed a new method of how to treat superposition of step's flux and compute transmissibility under confined-unconfined state.