Theoretical and experimental of deep engineering slabbing failure mechanism under coupled long stress waves and high in-situ stresse
LI Jie1, GUO Wei1*, CHEN Liangyu1, XU Tianhan1, JIANG Haiming1, FAN Pengxian1, JI Yuguo1, WANG Houyu2
(1. State Key Laboratory of Explosion and Impact and Disaster Prevention and Mitigation, Army Engineering University of PLA, Nanjing, Jiangsu 210007, China; 2. Chinese People's Liberation Army 93204 Troop, Beijing 100068, China)
Abstract：To validate the proposed theory, a series of similarity model tests were conducted using a self-developed simulation system designed to assess the damage effects of deep underground chambers. This system reproduces the entire process of “in-situ stress loading + excavation unloading + planar shock wave disturbance.”The test results demonstrate that: (1) Under the action of long stress waves, the failure mode of underground chambers aligns with that observed under static loads, characterized by slabbing buckling of the sidewalls rather than roof spalling; (2) The surrounding rock pressure calculated using the quasi-static method closely matches the measured values, confirming the reliability of the proposed model; (3) The plastic zone formed by excavation retains residual bearing capacity even under dynamic disturbances. This work elucidates the slabbing failure mechanism of deep underground chambers subjected to long-wave ground shocks, establishes a calculation method for surrounding rock pressure applicable to this working condition, and provides a theoretical foundation for the design and evaluation of deep underground protective engineering.
李 杰1，郭 纬1*，陈亮羽1，徐天涵1，蒋海明1，范鹏贤1，纪玉国1，王后裕2. 长应力波与静力耦合下深部硐室板裂破坏理论及试验研究[J]. 岩石力学与工程学报, 2026, 45(7): 1999-2011.
LI Jie1, GUO Wei1*, CHEN Liangyu1, XU Tianhan1, JIANG Haiming1, FAN Pengxian1, JI Yuguo1, WANG Houyu2. Theoretical and experimental of deep engineering slabbing failure mechanism under coupled long stress waves and high in-situ stresse. , 2026, 45(7): 1999-2011.
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2026, Vol. 45 
