CAJ | 학술논문

分析岩石蠕变过程中的非线性损伤特征,在各向同性的蠕变方程中引入时间硬化,采用应变等效原理,推导出时间硬化条件下的岩石蠕变方程,利用该方程可以同时描述岩石蠕变曲线的初始蠕变、等速蠕变和加速蠕变三个阶段,并进行了参变曲线数值求解和参数特性分析,利用该方程拟合了某页岩三轴蠕变实验数据,同时揭示了蠕变现象的非线性本质.结果表明:利用该方程可以较好地模拟岩石蠕变曲线的3个阶段.
분석암석연변과정중적비선성손상특정,재각향동성적연변방정중인입시간경화,채용응변등효원리,추도출시간경화조건하적암석연변방정,이용해방정가이동시묘술암석연변곡선적초시연변、등속연변화가속연변삼개계단,병진행료삼변곡선수치구해화삼수특성분석,이용해방정의합료모혈암삼축연변실험수거,동시게시료연변현상적비선성본질.결과표명:이용해방정가이교호지모의암석연변곡선적3개계단.
@@@@To analyze the nonlinear damage characteristics in rock creep process, a time hardening parameter is introduced into the isotropic creep equation. Using strain equivalent principle, a rock creep equation is derived under the conditions of time hardening. The equation can describe the three stages in rock creep curve at the same time: initial creep, constant speed creep and accelerated creep. In addition, the study provides numerical solution for the parameter variable curve and analyzes the parameter characteristics. Using the equation fittings, the study ascertains the shale’s three axis creep experimental data, and reveals the non-linear nature of creep phenomenon. The study results show that using equations can better simulate the three creep curves stages of rock creep.