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采用非连续变形分析(DDA)方法对台阶爆破抛掷的全过程进行了模拟分析,给出了人工边界、爆破载荷的处理算法并编制了相应的DDA程序,计算结果较好地反映了节理岩体在爆生气体准静态作用下的破坏、移动的动力学过程以及爆堆的最后形成情况。
The whole process of bench blasting and throwing is simulated by the method of discontinuous deformation analysis (DDA). The artificial boundary and blasting load processing algorithms are given and the corresponding DDA program is compiled. The calculation results better reflect the effect of the joint rock mass The destruction under the quasi-static action of the explosive gas, the kinetic process of the movement and the final formation of the explosive stack.