Kışladağ露天金矿(土耳其乌萨克省)疏干排水量计算及采后矿坑湖预测

The KA +/- AYladag gold mine (UAYak, Turkey) has operated since 2006 and is projected to close by 2030, leaving a large open pit. We quantified dewatering requirements during the operational period, predicted pit lake formation during the post-closure period, and assessed the likely impacts on groundwater resources. Groundwater inflow into the pit during 17 years of mining was calculated using analytical and numerical models. The analytical model yielded lower inflow rates because it does not account for groundwater that will be released from storage. Post-closure, pit lake water balance calculations show that the system will reach equilibrium 585 years after dewatering ceases and that lake levels will stabilize at 816 m above sea level (masl). Further analysis indicated that 830 masl is a critical level, below which the pit will behave as a sink; above that, it will be a flowthrough system that could possibly affect downgradient groundwater quality

矿坑疏水及其对地下水资源影响评价:以土耳其西部卡尔丹哥镍矿(Caldag Nickle Mine)为例

Dewatering requirements of three open pits located in western Turkey and the impact of dewatering on groundwater resources were evaluated using a three-dimensional numerical groundwater flow model. The groundwater was modeled using MODFLOW software and the dewatering was simulated using the MODFLOW Drain Package. The drain cell configurations were determined by pit boundaries; invert elevations of drains corresponded to the bench elevations in the mining schedule, which varied dynamically among the three pits. Transient model runs were conducted for the 21 years of mine life to calculate the monthly dewatering rates. Simulation results indicate that the average groundwater inflow to the excavations is 3.64 L/s, excluding the effects of direct rainfall into the pits and surface water flow from the benches. Long term (80 years) simulations were conducted to predict the amount of drawdown at the water supply wells in the area. The results indicate that 21 years of mining will not significantly impact the water levels in these wells. However, natural discharge from the springs near the pits will be exhausted by the dewatering

An overview of magnetic material: Preparation and adsorption removal of heavy metals from wastewater

The issue of wastewater impurities along harmful heavy metal ion is rather critical. In this matter, there is a necessity for developed techniques to wastewater treatment. Recently, magnetic-based carbon materials application for the metal ion removal from water has significantly gotten attention. For years, researchers design techniques that emphasize on the magnetic material, in order to attain comprehensive benefit. This paper provided detailed review on the synthesis of magnetic materials. In addition, compressive review on heavy metal was narrated. Hence, magnetic-based material has proven excellent adsorption capacity for waste treatment