爆炸荷载作用下应力波衰减规律研究

岩体爆破理论和应力波衰减的研究,直接关系到国家的基本建设。迄今国内外在应力波衰减方面,已取得了一些积极的进展,但仍处于探索研究阶段。本文应用ANSYS/LS-DYNA动力有限元对柱状药包爆炸应力波在裂隙岩体里传播进行模拟,与理论计算值进行比较,得出了合理的应力衰减指数。

RESEARCH ON WEAKEN RULES OF STRESS WAVE BY EXPLOSION LOADS

The development of rock blasting theory and technology,directly relates to the country's infrastructure.So far,the research on weaken rules of stress wave has been made some positive progresses at home and abroad,but in general it is still at an exploratory stage.In this paper,the propagation of cylindrical charge explosion stress wave in fractured rock mass performs simulation by ANSYS / LS-DYNA finite element dynamic,compares with the theoretical values,and obtains reasonable stress attenuation index.