陇东盆地白垩系含水岩组水文地质特征

Hydrogeological Characteristics of Cretaceous Water-bearing Rock Formation in Longdong Basin

陇东盆地作为国家重要能源基地之一,具有丰富的石油、煤炭等资源,开发前景广阔。但该区地处黄土高原干旱区,水资源匮乏,已不能满足能源基地建设和社会经济快速发展的需求。近年来的水文地质调查工作已探明,陇东盆地白垩系地层赋存着丰富的碎屑岩类孔隙裂隙水资源。本文从含水岩组的类型、富水性特征、补径排条件、水化学类型方面对盆地内白垩系含水岩组的水文地质特征进行了分析,成果不仅有利于指导区内地下水资源的合理开发利用,而且对于陇东能源基地的规划和建设具有重要的现实意义。

As one of the important energy bases of the country,Longdong Basin is rich in petroleum,coal and other resources,and has broad development prospects.However,the region is located in the arid area of the Loess Plateau,which is short of water resources and can not meet the needs of energy base construction and rapid socio-economic development.In recent years,the hydrogeological investigation has proved that the Cretaceous strata in Longdong basin contain abundant clastic rock pore fissure water resources.In this paper,the hydrogeological characteristics of the Cretaceous water-bearing formation in the basin are analyzed in terms of the type of water-bearing formation,the characteristics of water yield,the conditions of supplement and drainage,and the types of hydrochemistry,the results are not only helpful to guide the rational development and utilization of groundwater resources in the area,but also have important practical significance for the planning and construction of Longdong energy base.