联合利用天然地震和人工地震测深资料对祁连山—河西走廊地区进行地壳三维速度结构反演，获得了该区地壳三维速度结构图像．给出了按5km间隔的中、上地壳速度切面和地壳速度结构与莫霍界面等深线图．综合大地热流实测结果和深部岩石物性等，建立了下地壳部分熔融的韧性模型．给出了计算地震波速度和电阻率的方法与公式，进行了部分熔融状态下深部电性与地震波速度的联合数值模拟和联合解释，其结果与实测的基本一致．分析了各构造单元之间下地壳电阻率、速度与热流的关系，对下地壳部分熔融程度进行了估计． Using the natural seismic data and artificial seismic sounding data, the 3D crustal velocity structure of the Qilian Mountains and Hexi Corridor region is retrieved, and the 3D crustal velocity image of the crust is obtained. The contour maps of velocity crust and crust velocity and Moho interface at middle and upper crust intervals of 5 km are given. Based on the measured results of the geothermal heat flow and petrophysical properties of deep rocks, a ductile model for the partial melting of the lower crust was established. The methods and formulas for calculating velocity and resistivity of seismic waves are given. The joint numerical simulation and joint interpretation of deep electrical properties and seismic wave velocities under partial melting are carried out. The results are in good agreement with the measured ones. The relationship between the resistivity, velocity and heat flux of the lower crust between each structural unit was analyzed, and the degree of partial melting of the lower crust was estimated.