摘要
利用通用离散元程序(UDEC)研究应力波在单个和多个平行节理中的传播规律,为了简化问题,其中的应力波为垂直节理入射的P波.数值模拟的结果表明,在单个节理的情况下,透射系数的大小只与节理的法向刚度有关,而与节理的剪切刚度和内摩擦角无关;在多个平行节理的情况下,节理数影响应力波的透反射情况,节理数增加,透射系数随着节理间距减小的变化值增大.
In this paper , the universal distinct element code （ UDEC ） was use to study the propagation laws of P wave in single and multiple parallel jointed rock mass .To simplify the problem , the incident wave is P-wave and the direction of its propagation is perpendicular to the fractures .The results of numerical simulation show that the magnitude of the transmission coefficient depends only on the joint normal stiffness .It has nothing to do with the joint shear stiffness and angle of internal friction in the case of single joint .In the case of multiple parallel joints , joint count influences the transmission and reflection effects of stress wave .With the increase of the number of joints , the change value of the transmission coefficient increases with the decrease of the joint spacing .
出处
《佳木斯大学学报（自然科学版）》
CAS
2014年第6期815-817,共3页
Journal of Jiamusi University：Natural Science Edition
关键词
离散元
UDEC
应力波
平行节理
数值模拟
discrete element method
UDEC
stress wave
parallel joints
numerical simulation
