Journal
NATURAL HAZARDS
Volume 72, Issue 2, Pages 915-926Publisher
SPRINGER
DOI: 10.1007/s11069-014-1042-6
Keywords
Rock burst; High ground temperature; Acoustic emission; Deep-buried tunnel
Funding
- Cultivating Program of excellent innovation team of Chengdu University of Technology [HY0084]
- National Natural Science Foundation of China [41230635, 41002110, 41272330]
- West Traffic Construction Science and Technology Project of the Ministry of Transport [20113188051090]
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Much research has been conducted on the influence of rock burst mechanisms and temperature on the mechanical properties of hard rock while research on the effect of temperature on rock bursts is scarce. Therefore, this paper focuses on Rock Burst Proneness Index tests and acoustic emission (AE) tests under the action of high temperature. It was found that the Rock Burst Proneness Index and the AE energy will rise as the temperature rises. It means that the degree of rock burst is increasing instead of decreasing with rising temperature. The research results revealed the temperature effect of rock burst in long deep tunnels under a certain thermal stress condition, which is helpful for explaining the rock burst disaster in tunnels at high ground temperature.
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