典型文献
Influence of blasting load directions on tunnel stability in fractured rock mass
文献摘要：
Tunnels in fractured rock masses are typically damaged by dynamic disturbances from various di-rections.To investigate the influence of blasting load directions on the stability of a tunnel with a pre-crack nearby,blasting tests were conducted on the physical models of an external crack around a tunnel(ECT)in this study.Failure modes of the tunnels were analysed based on stress wave theory.The Riedel-Hiermaier-Thoma(RHT)material model was employed to perform the numerical simulations on ECT models.Stress distribution around the tunnels and final failure patterns of the tunnels were characterised.The results show that,under blasting loads,the pre-crack propagates and then new cracks initiates on the incident side of the tunnel.These cracks extend towards each other and eventually coalesce.Blasting load directions significantly influence the ultimate failure mode of the tunnel in the fractured rock masses.The new cracks on the shadow side of the tunnel appear at different positions when the blasting stress waves come from various directions.The results are meaningful to the analysis of tunnel stability and optimisation of the tunnel support scheme.
文献关键词：
中图分类号：
作者姓名：
Xiaohan Li;Zheming Zhu;Meng Wang;Yun Shu;Shuai Deng;Dingjun Xiao
作者机构：
Key Laboratory of Deep Underground Science and Engineering(Ministry of Education),College of Architecture and Environment,Sichuan University,Chengdu,610065,China;Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province,Southwest University of Science and Technology,Mianyang,621010,China
文献出处：
引用格式：
[1]Xiaohan Li;Zheming Zhu;Meng Wang;Yun Shu;Shuai Deng;Dingjun Xiao-.Influence of blasting load directions on tunnel stability in fractured rock mass)[J].岩石力学与岩土工程学报（英文版）,2022(02):346-365
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B类：
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AB值：
0.522881
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