潍坊市城区地下水水化学特征及质量评价

摘要

In order to understand and master chemical characteristics and quality of groundwater in Weifang city, on the basis of urban geological survey in Weifang city, 400 groundwater samples have been collected.Based on the test results, the single factor evaluation method and comprehensive evaluation method are used to evaluate the quality of groundwater.It is showed that northern study area is sea (salty) water intrusion area with poor water quality.The square of this area is 827.04km2.Its central area is urban area.This area is affected by industrial and agricultural activities of human beings, thus, the quality of groundwater is very poor, and the square of this area is 911.52km2.The quality of groundwater in southern area is good with the square of 670.46km2.Good and excellent quality areas distributed scatterly in the study area with the square of 52.64 km2.Chemical type of groundwater in the study area is zonal distribution from north to south.Groundwater in northern area is Cl-Na type, and tranferred to Cl-HCO3-Ca· Mg type in the southern area, finally changed to HCO3-Ca type.%为详细了解和掌握潍坊市城区地下水化学特征及质量状况,该文在潍坊市城市地质调查的基础上,共采集地下水样品400件,并进行了样品分析测试.基于检测结果,选用单因子评价法和综合评价法对地下水质量进行了综合评价研究.结果表明,研究区北部为海(咸)水入侵区,水质极差,面积827.04km2,中部为主城区,受人类工农业活动影响,水质较差,面积911.52km2,南部水质较好,面积670.46km2,良好区和优良区在区内零星分布,面积52.64km2;研究区地下水化学类型自北向南呈带状分布,北部为Cl-Na型水,向南过渡为Cl·HCO3-Ca·Mg型水,最后变为HCO3-Ca型水.