New understandings on initiation and evolution of disasters in deep underground
Jianguo Wang, Heping Xie, Chunfai Leung, Xiaozhao Li
发布时间：2023-10-24
关键词：New understandings on initiation and evolution of disasters in deep underground
摘要：The editors wish to highlight the articles appearing in this issue. The first article, entitled “New physics of supersonic ruptures” by Boris G. Tarasov, concerns the development of a new theory on the potential occurrence of ruptures after deep underground earthquakes. Two other articles belong to our first special theme of “Disaster evolution in deep underground.” The final two articles i...
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俄罗斯资深教授发表系列文章-1：震源动力关键机制的重大突破
Boris G. Tarasov
发布时间：2023-10-12
关键词：New physics of supersonic ruptures
摘要：AbstractUntil recently, it is believed that the rupture speed above the pressure wave is impossible since spontaneously propagating ruptures are driven by the energy released due to the rupture motion, which is transferred through the medium to the rupture tip region at the maximum speed equal to the pressure wave speed. However, the apparent violation of classic theories has been revealed by n...
阅读全文 PDF 引用Visualizing experimental investigation on gas–liquid replacements in a microcleat model using the reconstruction method
微观探秘：煤层割理中的气水双相流动之谜
陈绍杰, 张继成, Dawei Yin, Faxin Li, Jialin Lu, Peiyang Zhu
发布时间：2023-05-31
关键词：dynamic contact angle,flow visualization, instantaneous velocity, microcleat, residual liquid
摘要：Highlights Geometric characterization and reconstruction of a three-dimensional transparent cleat model were performed. Gas–liquid repulsion characteristics were determined in a visualized microcleat model. Transient flow velocity hysteresis is evident in tortuous channels. Dynamic variation of the contact angle shows diversity. Pressure changes the groove liquid content and liquid film thickness.
阅读全文 PDF 引用Nonlinear anisotropic finite element analysis of liquefiable tunnel–sand–pile interaction under seismic excitation
地震挑战下的隧道-沙土-桩交织：非线性有限元分析深度解析
Md. Foisal Haque
发布时间：2023-11-23
关键词：Nonlinear anisotropic finite element analysis of liquefiable tunnelsandpile interaction under seismic excitation
摘要：AbstractNonlinear time-history analysis can be used to determine the liquefiable behaviors of the tunnel–sand–pile interaction (TSPI) model with the consideration of sand anisotropy. This study presents the nonlinear response of the TSPI model with the existence of liquefaction under seismic excitation. The analysis reveals that tunnel and pile behave as isotropic elements, while sand shows i...
阅读全文 PDF 引用Triaxial creep damage characteristics of sandstone under high crustal stress and its constitutive model for engineering application
王来贵教授团队：揭示高地应力下岩石蠕变的奥秘，实现支护结构的长期稳定
陈东旭, 王来贵, Pierre Darry Versaillot, Chuang Sun
发布时间：2023-03-15
关键词：Triaxial creep damage characteristics of sandstone under high crustal stress and its constitutive model for engineering application
摘要：AbstractThe creep characteristics of rock under high crustal stress are of important influence on the long-term stability of deep rock engineering. To study the creep characteristics and engineering application of sandstone under high crustal stress, this study constructed nonlinear creep damage (NCD) constitutive mode based on the triaxial graded loading‒unloading creep test of sandstone in t...
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