陕北安塞-靖边-吴旗地区地下水富集规律及资源评价

安塞-靖边-吴旗地区位于陕北黄土高原东北部,地下水赋存类型主要为第四系松散型潜水、白垩系潜水及承压水。南部黄土梁峁区第四系潜水十分贫乏,北部沙漠-冲积平原潜水资源较为丰富。白垩系含水层广泛分布,水质好,水量丰富,是区内工业用水主力开采层位,安塞-坪桥以东白垩系地层缺失,地下水资源十分贫乏,为严重贫水区。地下水资源计算结果表明：该区白垩系地下水静储量巨大,达2 462.35亿m^3,但调节储量较小,仅为4.816亿m^3,地下水资源总体较为贫乏。

Groundwater Accumulation Regulation and Evaluation in the Area of Shaanbei Ansai,Jingbian and Wuqi

The Ansai-Jingbian-Wuqi area located in the northeastern part of the Loess Plateau of North Shaanxi,the main type of Groundwater is the loose Quaternary phreatic water,the Cretaceous confined and phreatic water. the water resources of The loose Quaternary phreatic in the south of the Loess Plateau Region is very poor,the prelatic water resource in The northern desert alluvial plain is more abundant. Cretaceous aquifers are widely distributed,good water quality,abundant water quantity,is The main aquifer in The research area. Cretaceous strata in Ansai-pingqiao area east of deletion,groundwater resource is very poor. Groundwater resources calculation results show that： The Cretaceous Groundwater permanent storage reached 2 462. 35 × 10^8m^3,but the regulated groundwater storage only 4. 816 × 10^8m^3,Groundwater resources in this area is poor.