节理岩体中应力波传播规律研究的进展

The Progress in Study of Regularity of a Stress Wave Propagation in the Jointed Rock Mass

讨论了位移不连续模型与特征值法结合的方法,对垂直于单一线性变形节理、多个平行线性变形节理、单一非线性变形节理,分别采用线性变形不连续模型、双曲线变形不连续模型(BB模型)进行的理论与相应的实验研究。用离散元程序UDEC,对上述问题进行数值模拟;用三维离散元程序3DEC,对节理岩体中三维波的传播进行的数值模拟。并用UDEC与有限差分程序AUTODYN-2D耦合,模拟爆炸过程及爆炸波在节理岩体中的传播。同时提出了几个有待研究的问题。

The following subjects are discussed in this paper. For the rock masses containing a single linearly deformable joint, multiple parallel linearly deformable joints and a single nonlinearly deformable joint, the method of characteristics combined with displacement discontinuity model was used to solve the problem of wave propagation. The linear displacement discontinuity model was used in solving the linearly deformable jointed rock mass problem. The hyperbolic elastic mode (BB model) was used in solving the nonlinearly deformable jointed rock mass problem. The discrete element method program by the name of Universal Distinct Element Code (UDEC) was used to analyze the problems mentioned above. The coupled method of the discrete element method program UDEC and the finite difference program AUTODYN-2D was used to simulate the explosion process and the propagation of blast waves in a jointed rock mass.