潘北矿-580m水平灰岩地下水质量现状及评价

The Current Status and Evaluation of Limestone Groundwater in Panbei Coal Mine 580 Meters Underground

为了解灰岩地下水质量现状,通过潘北煤矿-580 m水平C3Ⅰ组灰岩放水试验,采集井下14个疏放水孔地下水,运用综合污染指数法和F值法相结合对实验监测所得到的数据进行污染评价。由此得出如下结论:氯化物、溶解性总固体、铁、铬等重金属元素对矿区灰岩地下水质量影响比较大,这4项评价因子占总评价因子污染分担率的83%;矿井-580 m放水大巷东翼水质整体好于西翼;井下部分疏放水孔地下水水质较差,可能已经受到来自煤矿开采及浅层地下水的污染。

In order to find out the quality status of limestone underwater , through dewatering test of group C 3Ⅰlimestone in Panbei coal mine 580 meters underground , groundwater from 14 water-draining holes under-ground was collected.With the combination of synthetical pollution index method and F value method ,the data obtained from the experiment monitoring was evaluated.Conclusions are as follows：firstly, chloride, total dis-solved solids and heavy medals like iron , chromium, etc, these four factors accounting for 83%of total pollu-tion share rate , have greatly affected the quality of limestone groundwater in mining area; secondly , water quality of east wing turns out to be better than that of west wing in water -release tunnel 580 meters under-ground;thirdly , groundwater in part water-draining holes is of inferior quality and has already got contamina-ted by shallow groundwater and coal mining.