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金属矿山 ›› 2009, Vol. 39 ›› Issue (03): 35-38.

• 采矿工程 • 上一篇    下一篇

准周期外力作用下岩体运动行为的非线性研究

孙强   

  1. 中国科学院地质与地球物理研究所
  • 出版日期:2009-03-14 发布日期:2012-01-30

Non-linear Motion Behavior of Rockmass under Quasiperiodic Driving

Sun Qiang   

  1. Institute of Geology and Geophysics, Chinese Academy of Sciences
  • Online:2009-03-14 Published:2012-01-30

摘要: 根据准周期外力下岩体的破坏特点,分析了其主要影响因素。根据平面摩擦行为,建立了岩体破坏的粘滑模型,并从模型的动力学特点出发,建立了运动学微分方程。通过对微分方程进行了系统的非线性动力学分析研究,提出了判定系统运动稳定性的理论方法;同时利用数值方法分析了不同系统参数对系统的影响,分析了岩体运动的粘滑行为。

关键词: 准周期, 稳定性, 阻尼, 摩擦, 粘滑, 非线性, 动力学方程

Abstract: The main factors influencing the rock system are analyzed in terms of the characteristics of rock fracture under quasiperiodic driving.A stick-slip mode of rock fracture is established in consideration of the plane friction behavior, and based on the kinetic characteristics of this model, a kinematical differential equation is established.A theoretical method for judging the motion stability of the rock system is proposed through a non-linear kinetic study of the differential equation.The effects of different parameters on the rock system are analyzed by numerical simulation method and the stick-slip behavior of rock system is also analyzed.

Key words: Quasiperiodicity, Stability, Damping, Friction, Stick-slip, Non-Linear, Motion equation