Institution: | 1. Institute of Earth Science, Ocean University of Qingdao, Qingdao 266003; Department of Mechanic Engineering, Tsinghua University, Beijing 100084 2. Institute of Earth Science, Ocean University of Qingdao, Qingdao 266003 3. Department of Mechanic Engineering, Tsinghua University, Beijing 100084 4. Comprehensive Institute of Geotechnical Investigation and Surveying, Ministry of Construction, Beijing 100007 |