徐州市第四系孔隙水特征研究

徐州市是全国40个严重缺水的城市之一。近年来,徐州市水质型缺水较严重,向城市供水的地面水水源地遭受污染,而第四系孔隙水主要开采区位于徐州市下辖县城及乡镇,以往工作程度较低。为合理开发和保护徐州市第四系孔隙水资源,在开展徐州市经济发展现状、水文地质调查和区域农田水利调查资料分析的基础上,通过抽水试验及对以往资料进行对比分析,研究徐州市第四系孔隙水水文地质特征,总结富水规律及富集特征。徐州市第四系孔隙水主要分为潜水和承压水,潜水富水性强区域集中在沿故黄河高漫滩一带,直接接受大气降水和河流侧向径流补给,其余区域富水性差;东部地区中更新统孔隙承压水的富水性、水质优于西部地区,而西部地区下更新统至中、上新统孔隙承压水的富水性、水质优于东部地区。

Study on the characteristics of Quaternary pore water in Xuzhou City

Xuzhou is one of the 40 cities with severe water shortage in China. In recent years, the water shortage caused by the worse water quality is serious, because the surface water, as the source of city water, suffered from pollution. The main mining areas of Quaternary pore water is located in the county and township of Xuzhou, and previous work is not detail enough. On the basis of the analysis of economic development, hydrology geology investigation and irrigation and water conservancy survey,the authors studied the hydrogeological characteristics and summarized the enrichment law and characteristics of Quaternary pore water for reasonable development and protection through pumping experiments and analysis of previous data. The results show Quaternary pore water is mainly divided into two parts, phreatic water and confined water. The enrichment area of phreatic water is located in the high floodplain area of the Yellow River, with water supplies from atmospheric precipitation and river side runoff. And the water abundance of the other areas is poor. The water abundance and quality of Middle Pleistocene pore confined water in eastern area are better than those in western area, and the water abundance and quality of Lower Pleistocene, Pliocene and Miocene pore confined water in western area are better than those in eastern area. This paper can provide scientific basis for the reasonable development, management and protection for water resource.