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    Instability Mechanism of Cavity-Bearing Formation under Tunnel Excavation Disturbance by Tao Liu, Haotong Wang, Xiuting Su, Kexian Li, Shiqun Liu, Fengsong Guo

    Published 2020-01-01
    “…This study was based on the concrete project case of Qingdao Metro. Two groups of experiments (with and without cavities) were designed to simulate the four-step excavation by staged unloading of an airbag. …”
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