Experimental study on the prediction of rockburst hazards induced by dynamic structural plane shearing in deeply buried hard rock tunnels
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- 作者：Fanzhen Menga ; b ; Hui Zhoub ; hzhou@whrsm.ac.cn" class="auth_mail" title="E-mail the corresponding author ; Zaiquan Wanga ; Liming Zhanga ; Liang Konga ; Shaojun Lib ; Chuanqing Zhangb
- 关键词：Stress drop ; Fault-slip rockburst ; Prediction ; Acoustic emission ; b-value
- 刊名：International Journal of Rock Mechanics and Mining Sciences
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：86
- 期：Complete
- 页码：210-223
- 全文大小：3133 K
文摘
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Shear tests were performed on completely interlocked rigid granite structural planes.
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Acoustic emission (AE) was monitored during the shear failure of the joints.
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Rockbursts can be induced by violent post-peak stress drops or unstable stick-slip.
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Rockbursts caused by dynamic shear failure can be predicted from the AE b-value.
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The b-value tends to decrease as the normal stress increases.