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    深部硬岩巷道岩爆模拟试验研究进展与展望

    Research progress and prospect of rockburst simulation test for surrounding rock of deep hard rock roadways

    • 摘要: 深部巷道及洞室岩爆灾害是制约矿山安全高效开采的关键科学问题之一。岩爆的发生与深部围岩受力状态及路径密切相关,相对于深部巷道围岩开挖前处于的静应力状态,任何开挖活动引起的应力变化均属于动力扰动,所以深部巷道围岩本质上处于“高应力+动力扰动”的受力模式。基于这一学术思路,对于国内外硬岩巷道岩爆模拟试验从“高应力+开挖结构+应力调整扰动”、“高应力+开挖结构+冲击扰动”和“高应力+内部卸荷+应力调整扰动”3方面进行分析和归纳,总结室内岩爆模拟试验系统的发展和巷道岩爆破坏过程及诱发机制,并提出了岩爆模拟试验的未来发展趋势和方向:研制大尺度、多场耦合的真三轴试验系统及配套的内部钻孔卸荷装置;研发新型智能监测技术,实现岩爆全过程关键信息的实时可视化捕捉。基于上述技术创新,开展更符合深部硬岩巷道围岩受力路径的岩爆试验模拟,深入挖掘围岩岩爆宏细观特征和演化规律,结合“岩−环−人”三要素岩爆发生机理,获得深部巷道围岩岩爆发生的定量化指标,建立符合现场工程的岩爆破坏判据。

       

      Abstract: Rockburst in deep surrounding rock represents one of the key scientific challenges hindering the advancement of deep mine. Its occurrence is intrinsically linked to the stress state and loading path within the rock mass. For the initial stress state prior to excavation, any subsequent stress changes induced by excavation activities constitute dynamic disturbances. Consequently, deep surrounding rock fundamentally experiences a “high stress + dynamic disturbance” loading regime. Building on this concept, this analysis categorizes and summarizes global laboratory simulations of roadway rockburst into three paradigms: “high stress + excavation structure + stress adjustment disturbance”, “high stress + excavation structure + impact disturbance”, and “high stress + internal unloading + stress adjustment disturbance” This synthesis traces the evolution of laboratory rockburst simulation systems and elucidates the failure processes and triggering mechanisms of rockburst. Future research directions are identified as: Developing large-scale, multi-field coupled true triaxial testing systems equipped with internal borehole unloading devices; Creating novel intelligent monitoring technolo- gies for real-time, visual capture of key information throughout the rockburst process. Leveraging these technological advancements will enable more realistic laboratory simulations that accurately replicate the stress conditions of deep roadways in situ. This will facilitate in-depth exploration of the macro/meso-scale characteristics and evolutionary patterns of surrounding rock failure during rockburst. Integrating the “Human–Rock–Environment” three-element rockburst mechanism, the research aims to establish quantitative indicators for rockburst initiation in deep roadway surrounding rock, develop practical rockburst failure criteria aligned with field engineering conditions, reveal the fundamental rockburst mechanisms in deep hard rock roadways.

       

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