Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences,Shijiazhuang 050061,China;
Technical Innovation Center for Geothermal and HDR Exploration and Development,Ministry of Natural Resources,Shijiazhuang 050061,China;
Institute of the Hydrogeology and Engineering Geology of Qinghai,Shijiazhuang 050061,China;
Qinghai Bureau of Environmental Geology Exploration,Xining 810007,China;
Shandong Provincical Lunan Geo-engineering Exploration Institute(The Second Geological Brigade of Shandong Geological Exploration Bureau),Jining,Shangdong 272100,China;
radiogenic heat production; heat flow; crustal thermal structure; hot dry rock; heat source mechanism;