【摘要】 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。更多还原

【Abstract】 In past works,there are many references on projectile penetration into rock mass medium.But there was no theoretical calculation formula or experienced formula for projectile penetration into anchored rock mass,and the field full scale penetration test would cost lots of manpower.Based on the spherical cavity expansion model,and taking the resistant force of bolt into account,an engineering analytic model for ogival nose projectiles to penetrate normally into semi-infinite reinforced rock targets has been developed in this paper.The predicated depth of penetration by the model is in reasonable agreement with the test data,which can provide theoretical support to the reinforcement and design of underground defence works.更多还原