爆破地震波对岩质边坡稳定性的影响
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摘要
爆破对边坡稳定性的影响与爆炸能量、爆破地震波传播形式和边坡的性质有关。本文根据爆破动力有限元程序，计算了存在一定滑动面情况下，由于爆破动力影响而造成的稳定系数的降低值。该程序通过频谱分析将实测波形分解成若干个正弦波，然后从波传播的角度出发，综合考虑了爆破地震波的频率、相位不均匀性、波传播过程中的几何衰减、能量损耗以及边坡的自振特征。通过实例计算，本文分析了爆破主频率、爆心距、爆破加速度峰值对边坡的影响，得出了符合实际的结论。
The effect of detonating wave on the stability of a rocky slope hasconcern with the enery of blasting,the spread feature of wave,and the formof the slope.This article studies tile reduction of safety of a slope with agiven sliding surface by finite element program.The program can conside the frequency,the challge of force direction,theattenuation of the wave and the feature of the slope.By the result of thecalculation,the article analysis the effect of the detonating wave on theslope in detail The result shows us not only the amplitude of the accelerateand the distance of blasting haye considerable effect on the stabilty of arocky slope but also the frequency of waye has.
The effect of detonating wave on the stability of a rocky slope hasconcern with the enery of blasting,the spread feature of wave,and the formof the slope.This article studies tile reduction of safety of a slope with agiven sliding surface by finite element program.The program can conside the frequency,the challge of force direction,theattenuation of the wave and the feature of the slope.By the result of thecalculation,the article analysis the effect of the detonating wave on theslope in detail The result shows us not only the amplitude of the accelerateand the distance of blasting haye considerable effect on the stabilty of arocky slope but also the frequency of waye has.
引文
1谭道宏．组合结构程序设计．武汉：武汉水利电力大学讲义．19942李翼祺、马素贞．爆炸力学．北京：科学出版社，19923郭自强．固体中的波．北京：地震出版社，19824卢文波．岩石爆破中应力波力传播及效应研究．博士论文，19955朱伯芳．有限单元法原理及应用．北京：水利电力出版社，1979
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