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目前对岩体介质抗侵彻方面研究文献资料较多,但尚无弹丸侵彻锚固岩体的理论计算公式或经验公式,本文在球形空腔膨胀模型的基础上,利用球形空腔膨胀模型计算岩石介质对弹丸的侵彻阻力,计入了弹丸直接与锚固岩体中锚杆发生碰撞的侵彻阻力,并将弹丸侵彻过程中岩石介质和锚杆侵彻阻力进行叠加,建立了弹丸垂直侵彻锚固岩体的工程分析模型。与单一空腔膨胀模型和试验数据进行对比后,模型计算结果与模拟试验结果基本一致,表明了研究具有一定的理论意义和工程适用价值。从而为洞库等地下防护工程设计及其加固改造提供理论研究方法和技术支持。
At present, there are many research literatures about the anti-penetration of rock mass, but there are no theoretical formulas or empirical formulas for the projectile to penetrate into the anchoring rock mass. Based on the spherical cavity expansion model, the spherical cavity expansion model is used to calculate The penetration resistance of the rock medium to the projectile takes into account the penetration resistance of the projectile directly colliding with the anchor rod in the anchoring rock mass and superimposes the penetration resistance of the rock medium and the anchor rod during the penetration of the projectile and establishes the projectile vertical Engineering Analysis Model of Penetrating Anchored Rock Mass. Compared with the single cavity expansion model and the experimental data, the calculated results of the model and the simulation results are basically the same, which shows that the research has certain theoretical significance and engineering application value. So as to provide theoretical research methods and technical support for the underground protection engineering design and reinforcement of the caves.