Dynamic tests of rocks subjected to simulated deep underground environments
XIA Kaiwen1,2, XU Ying1, CHEN Rong3
Dynamic tests of rocks subjected to simulated deepunderground environmentsXIA Kaiwen1, 2, XU Ying1, CHEN Rong3(1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2. Department of Civil Engineering, University of Toronto, Toronto M5S1A4, Ontario, Canada; 3. College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, Hunan, China
Abstract: Deep underground rocks are in a complex geomechanical environment featuring high in situ stress, high temperature, and high osmotic pressure. The mechanical responses and failure mechanisms of deep rocks under dynamic loading due to excavation, blasting and earthquakes cannot be explained by traditional rock mechanics theories due to these factors. In recent decades, significant progress has been made in the characterization of dynamic properties of rocks, including compression, tension, fracture and shear. Due to the complex geomechanical environment of deep rocks, extension of these investigations to deep rocks is desirable by considering high in situ stress, high temperature and high osmotic pressure, which is a critical issue in deep rock engineering. This study reviewed existing rock dynamic studies considering such three factors, summarized the influence of these factors to dynamic responses of rocks. Experimental systems, data analytical methods, and experimental results were summarized. In the last, future directions in deep rock dynamics were proposed.
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2019, Vol. 1 
