Based on the rock dynamic destabilizing phenomena, the mechanical model of two rocks system was established. The destabilizing condition and process of two rocks system were analyzed, and rock dynamic destabilizing critical condition was given to strictly confirm the end of rock dynamic destabilization. The elastic energy release illustration in paper contains high amounts of information. Together with load-displacement of body Ⅰ , the elastic energy releasing characteristics of rock dynamic destabilization was described by image. The result showed that: body I curve index m and body Ⅱ stiffness kn are two important factors which impact the elastic energy release of rock dynamic destabilization, and either m increases or kn decreases can lead to the increase of elastic energy release.%基于岩体动力失稳现象,建立了两体系统的力学模型.分析了两体系统失稳发生的条件和过程,并给出了岩体动力失稳的临界条件,确定了岩体动力失稳的弹性能释放终止点位置.给出的弹性能释放量图解中蕴涵了丰富的信息量,该图解与Ⅰ体荷载-形变曲线一起,使对岩体动力失稳弹性能释放特征描述图像化.研究表明Ⅰ体曲线指数m值和Ⅱ体的刚度kn值是影响岩体动力失稳弹性能释放量的2个重要因素,m值增大和kn减小都将导致弹性能释放量的增加.
展开▼
