祁连山前山盆构造的水文地质特征

摘要

Hydrogeology property between mountains and basins beyond Qilian perplex hydrogeology research for a long time.Based on regional hydrogeology survey , audio frequency magnetotelluric method was used to ana-lyze electrical properties of the structures between mountains and basins , and fault properties beyond Qilian were studied.Lithology, basal depth and hydraulic connection were discussed with drill data .The water-blocking and water-permeable mechanisms of groundwater flow from mountain to basin were further discussed with isotope analy -sis.The conclusions will provide basic support to the water resources simulation in Heihe valley and provide a refer -ence to researches on water distribution exchange between mountains and basins in the similar regions in inland ba -sins, Northwest China .%祁连山前山盆构造的水文地质特征一直是亟待解决的难题.在分析区域地质构造研究成果的基础上,采用音频大地电磁测深法分析了山盆构造的电性特征,并对祁连山山前大断裂的性质进行了研究.利用钻孔资料探讨了祁连山前山盆构造两侧的岩性、基底埋深以及水力联系.通过同位素分析,进一步探讨了山区地下水向盆地运移的阻水与透水机理.研究工作给出了该地区水文地质特征,为黑河流域水资源模拟提供了基础支撑,为中国西北内陆盆地类似地区山盆之间的水量交换研究提供借鉴和参考.