淮南潘集典型采煤沉陷积水区的水质变化规律

Laws behind water quality variation in typical coal mining subsidence area in Panji District of Huainan City

为解决采煤沉陷衍生的水环境问题,选取淮南潘集区典型的采煤沉陷区为研究对象,在现场踏勘的基础上,进行采样点位布设、样品采集与分析测试,分析地表水水质变化规律与影响因素,并采用W值水质评价法评价地表水水质。结果表明:研究区域监测时段内沉陷积水区地表水体中p H、F-、CODMn、NH3-N、TP指标变化规律不明显,TN含量递减,CODCr先减小后增大;研究区域沉陷积水区地表水水质受降水等条件影响;淮南潘一、潘三矿采煤沉陷区积水区地表水水体质量较差,主要污染物为CODCr和TN。该研究为淮南采煤沉陷积水资源综合利用提供了依据。

This paper is an attempt to solve the deuterogenlc water environment problems m coal mining subsidence area. The specific solution relies on the research directed at the typical coal mining subsidence area in Panji District of Huainan ; the subsequent analysis of the laws and influence factors as- sociated with the change in surface water quality, combined with sampling site arrangement, samples col- lection and analysis and testing as well as on-the-site inspection ; and the concurrent evaluation of the sur- face water quality using W value method. Results suggest little change in pH, F- , CODM,, NH3-N and TP observed in surface water body occurring in subsidence area during the monitoring period, progressive decreases in TN over time and initial decreases and subsequent increases in CODcr ; the effect of precipi- tation and other factors on surface water quality in coal mining subsidence area ; and the occurrence of the poor water quality in Panyi and Pansan mining subsidence area and the presence of key pollutants such as CODcr and TN. The specific research may provide a reference for the comprehensive utilization of water resources available in coal mining subsidence areas in Huainan.