河西走廊地下热水资源成因分析

Analysis on the Cause of Geothermal Water Resources in Hexi Corridor

河西走廊属于大陆板块内部的活动带,该区活动断裂发育,地震活动比较频繁,并有巨厚的中新生代沉积盆地,有较好的地下热水资源赋存的地质构造背景。从该地区的热源、水源及构造条件入手,对地下热水资源的成因类型进行深入的分析,认为地下热水系统的主要成因类型为中新生代断陷—坳陷盆地传导型和断裂带所控制的深循环对流型。为河西走廊地热资源的勘探和开发提供依据。

Hexi Corridor is located in active faults of the inner continental plate. With well-developed active faults, very active earthquakes and large-thickness Meso-Cenozoic sedimentary basin,it owns the geologic structure background on which geothermal water exists. The paper, through studying on its heat source, the source of water and the tectonic conditions, analyzes a few types of formation cause of geothermal water resources, and considers that the major types of geothermal water system are Meso-Cenozoic fault-depression basin transmission type and deep circulation convection type controlled by fault zone. The conclusion will provide scientific bases for the exploitation and development of geothermal water resources in Hexi Corridor.