Temperature effect of rock burst for hard rock in deep-buried tunnel

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• 作者：Guoqing Chen (1)
  Tianbin Li (1)
  Guofeng Zhang (1)
  Hongyu Yin (1)
  Hang Zhang (1)
  
• 关键词：Rock burst ; High ground temperature ; Acoustic emission ; Deep ; buried tunnel
• 刊名：Natural Hazards
• 出版年：2014
• 出版时间：June 2014
• 年：2014
• 卷：72
• 期：2
• 页码：915-926
• 全文大小：
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• 作者单位：Guoqing Chen (1)
  Tianbin Li (1)
  Guofeng Zhang (1)
  Hongyu Yin (1)
  Hang Zhang (1)
  
  1. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, 610059, Sichuan, China
  
• ISSN：1573-0840

文摘

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.