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目的探讨枣庄市煤矿关停后对地下水变化趋势与影响因素。方法采用长期动态水质监测资料分析,用SPSS15.0对枣庄市煤炭资源枯竭区域地下水水质监测资料进行数据处理,均数比较采用F检验。结果在煤矿关停前,丁庄-东王庄水源地,十里泉水源地水质总硬度和硫酸盐均符合国家生活饮用水标准;煤矿关闭后,总硬度、硫酸盐于2001年后呈逐年升高,丁庄-东王庄水源地总硬度最高值635mg/L,硫酸盐最高值360mg/L;十里泉水源地总硬度最高值574mg/L,硫酸盐最高值304mg/L。各年度间结果呈逐年上升趋势(P<0.05)),煤矿矿坑水对岩溶水的污染是以机械混合方式为主。结论煤炭资源枯竭城市水源地水质总硬度、硫酸盐升高受煤矿关闭时间和地质因素影响。
Objective To explore the change trend and influencing factors of groundwater in Zaozhuang coal mine after shutdown. Methods The long-term dynamic water quality monitoring data were used to analyze the data of groundwater quality monitoring in coal-depleted areas in Zaozhuang City by SPSS15.0. F-tests were used to compare the mean values. Results Before the coal mine was shut down, the total water hardness and sulphate of Dingzhuang-Dongwangzhuang water source and Shiliquan water source all met the national drinking water standard. After the coal mine was shut down, the total hardness and sulphate showed an increasing trend year after year The highest total hardness of Dingzhuang-Dongwangzhuang water source was 635mg / L and the highest sulfate value was 360mg / L. The highest total hardness of Shiliquan water source was 574mg / L and the highest sulfate value was 304mg / L. The annual results showed an upward trend year by year (P <0.05). The pollution of karst water by coal mine pit water was dominated by mechanical mixing. Conclusions The total hardness of water quality and the increase of sulfate in coal-source depleted urban water sources are affected by the coal closure time and geological factors.