PROGRESS AND PROSPECTS OF RESEARCH ON DEFORMATION AND MECHANICAL PROPERTIES OF ROCK AT INTERMEDIATE STRAIN RATES

The results of studies on the deformation and mechanical properties of rock at intermediate strain rates at home and abroad are summarized in this paper.The development of intermediate strain rate test instruments,compression and tensile tests at intermediate strain rates,failure mechanisms of rock materials at intermediate strain rates and numerical simulation are further discussed in detail.The drawbacks and unresolved problems in the relevant studies are summed up.Finally,several key issues are needed to be solved in further studies.