Abstract
With the rapid development of underground caverns in the fields of hydraulic engineering, mining, railway and highway, the frequency, and intensity of rockburst and dynamic instability have gradually increased, which has become a bottleneck restricting the safe construction of deep caverns. This paper presents a review of the current understanding of rockburst precursors and the dynamic failure mechanism of the deep tunnel. Emphasis is placed on the stability of the surrounding rock of the deep tunnel, the rockburst prediction method, and the dynamic failure characteristics of the surrounding rock of the deep tunnel. Throughout the presentation, the current overall gaps in understanding rockburst precursors and the dynamic failure mechanism of deep tunnels are identified in an attempt to stimulate further research in these promising directions by the research community.
Highlights
China has experienced a rapid development in high-speed rail over the past 15 years, and the national network has reached 35,000 km in total length since 2019
It should be mentioned that, more and more attention has been drawn to the research on rockburst in the past decades, the review concerning rockburst precursors and the dynamic failure mechanism of the deep tunnel is rather limited in number and scope
A comprehensive review was performed on the rockburst precursors and dynamic failure mechanisms of surrounding rock
Summary
China has experienced a rapid development in high-speed rail over the past 15 years, and the national network has reached 35,000 km in total length since 2019. Rockburst and the dynamic failure of surrounding rock have become a major problem in deep underground tunnels [10,11,12]. It should be mentioned that, more and more attention has been drawn to the research on rockburst in the past decades, the review concerning rockburst precursors and the dynamic failure mechanism of the deep tunnel is rather limited in number and scope. It is the intention of this study to comprehensively review the rockburst precursors and the dynamic failure mechanism of the deep tunnel.
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