Study On The Xu Jiabao Benxi Iron Ore Mining And Dressing Water Environmental Effect

Xu Jiabao is to increase iron ore self-sufficiency rate Benxi Iron and Steel Group and to increase the competitiveness of enterprises is planning the construction of a mine.Since mining involves the use and emissions and optimal allocation of water resources and other issues in the development and utilization of mine drainage process,and therefore how to reduce iron ore and reduce the impact of water Xu Jiabao urgent need to carry out a series of environmental studies in the course of mining.To do this from the mine to ensure security,water resources utilization and to reduce environmental pollution point of view to carry out research in the following aspects:First,the current situation of water quality of the environment around the mining area were evaluated.Surface Water Quality Ultra-ball support vector machines,fuzzy comprehensive groundwater environmental quality evaluation method,through the collection of surface water and groundwater in the area of water quality testing selected data related evaluation factors,evaluation results of surface water and groundwater quality as Class ? quality ?.Super ball by utilizing support vector machines to improve the evaluation process,and this is an innovation of this study.Second,the inflow pit were calculated.Respectively "Oi Law" and numerical simulation methods.The use of "Oi Law" calculations pit inflow of 18900m3/h,resulting in protection of mine safety and mine drainage utilization provide a scientific basis.Xu Jiabao iron water again optimized configuration.Optimal allocation model is based on economic,social and ecological benefits as the objective function,life,mining,wash as constraints on the lower limit of the amount of water and other mining and recycling water to municipal water Nanfen mine waste and tailings library collection recycled water can be used as a water source.Xu Jiabao optimization results can make iron ore extracted groundwater and municipal water Nanfen achieve the most rational use,thereby reducing the amount of water mine drainage,mine drainage to reduce the impact on downstream river water quality.Finally,Xu Jiabao launched a study effects of iron ore mine drainage on the water environment.Effect of mine water drainage mining process have on the regional groundwater analytical method were used to calculate its radius of influence,the use Visual MODFLOW software simulation predicted under different production levels within the scope of the change of groundwater level;the establishment of mine drainage on the small river may ecological risk generated were evaluated using principal component analysis filtering mine drainage metal ions as the main evaluation factors,the use of ecological risk evaluation methods,evaluation results Part mine drainage discharge will not cause heavy metal pollution on small river ecology;the Learn discharge a small amount of mine drainage impact,especially on small river surface water downstream Shenwo of this study establish child from Mendoza to Shenwo section of river water quality simulation models,analyzes the ammonia and COD for Senate Sewage into point sources on litter reservoir water to simulate a small amount of ore in this mine drainage into the river and downstream of the discharge area of northern Taiwan,the simulation results for a few small river mine drainage and Shenwo does not have an impact.The study also against Xu Jiabao iron ore in the development and utilization of water environment protection proposed how effective measures.