Affiliation: | 1.Department of Geological Engineering, Chang’an University, No. 126 Yanta Road, Xi’an, 710054, Shaanxi, China ;2.Key Laboratory of Western China’s Mineral Resources and Geological Engineering, Ministry of Education, No. 126 Yanta Road, Xi’an, 710054, Shaanxi, China ;3.China electronic research institute of engineering investigations and design, No. 11 Xinyi Road, Xi’an, 710054, Shaanxi, China ; |