论文部分内容阅读
以兰州市地下水样宏量化学组分测试结果为依据,采用统计分析和对比分析方法,研究了兰州市区地下水矿化度的分布及其成因。结果表明:现状条件下研究区地下水矿化度(TDS)普遍偏高,变化范围在340至18300mg/L之间,平均值为2212mg/L。广泛分布的第三系地层是地下水盐分的重要来源,开采引起的地下水位下降是引起市区水源地地下水矿化度升高的重要驱动因素,工业污染是引起地下水矿化度升高的潜在因素。
Based on the results of macroscopic chemical composition tests of groundwater samples in Lanzhou City, the distribution and origin of groundwater salinity in Lanzhou City were studied by means of statistical analysis and comparative analysis. The results show that the groundwater salinity (TDS) is generally high in the study area under the current conditions, ranging from 340 to 18300 mg / L with an average of 2212 mg / L. The extensive distribution of Tertiary strata is an important source of groundwater salinity. The decline of groundwater level caused by mining is an important driving factor for the increase of groundwater salinity in urban water sources. Industrial pollution is a potential factor that causes the salinity of groundwater to increase .