Geostatistical methods for rock mass quality prediction using borehole and geophysical survey data

Jianqin Chen1, Yoram Rubin2, Jon Edward Sege2, Xiaojun Li1 and Zhu Hehua3, (1)Tongji University, Department of Geotechnical Engineering College of Civil Engineering, Shanghai, China, (2)University of California Berkeley, Berkeley, CA, United States, (3)Tongji University, Shanghai, China