CAJ | 학술논문

建立了基于 Weibull分布的统计学岩石冲击损伤本构模型。在理论假设的基础上，通过公式推导，建立了岩石单元体损伤本构模型。并通过数学的方法，确定了模型中参数的计算公式和方法，明确了参数的物理意义。建立了岩石在循环冲击作用下的损伤变量的表达式，分析了岩石在循环冲击作用下的损伤累计演化规律。在中南大学动静组合加载实验系统上，开展了岩石在不同应力状态下的循环冲击实验，将实验数据带入本构模型中。分析结果表明：实验曲线与理论曲线接近重合，验证了该模型的合理性；初步分析了岩石在循环冲击作用下的损伤演化规律以及破坏失稳过程。该实验为岩石在动力扰动作用下的力学机理以及岩爆产生的机制提供了一定的理论依据。
건립료기우 Weibull분포적통계학암석충격손상본구모형。재이론가설적기출상，통과공식추도，건립료암석단원체손상본구모형。병통과수학적방법，학정료모형중삼수적계산공식화방법，명학료삼수적물리의의。건립료암석재순배충격작용하적손상변량적표체식，분석료암석재순배충격작용하적손상루계연화규률。재중남대학동정조합가재실험계통상，개전료암석재불동응력상태하적순배충격실험，장실험수거대입본구모형중。분석결과표명：실험곡선여이론곡선접근중합，험증료해모형적합이성；초보분석료암석재순배충격작용하적손상연화규률이급파배실은과정。해실험위암석재동력우동작용하적역학궤리이급암폭산생적궤제제공료일정적이론의거。
The rock impact damage model is set up based on the statistics.On the basis of the theoretical assumptions,rock unit cell damage constitutive model is established through formula deduction.The formula of the parameters in the model has been con-firmed and the physical meaning of the parameters has been cleared.The damage varia-ble of rock under the action of a cyclic impact expression has been set up.The rock un-der the action of cyclic impact damage cumulative evolution rule was analyzed.The rock under different stress state on the cyclical impaction loads experiment was carried out based on the central south university experiment system.The rationality of the model was verified through analysis coincidence experimental curve and theoretical curve.The damage evolution law of rock under the action of cyclical impact and destruction process of instability were analyzed.The results provide some theoretical basis on the mecha-nism under the action of dynamic disturbance and the generation mechanism of rock burst.