非均质岩体中一维应力波演化过程分析

钟光复,王志亮,李永池

中国工程科学 ›› 2006, Vol. 8 ›› Issue (5) : 58 -62.

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中国工程科学 ›› 2006, Vol. 8 ›› Issue (5) : 58 -62.
学术论文

非均质岩体中一维应力波演化过程分析

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Analyses of Evolutionary Process of One Dimensional Stress-waves in Heterogeneous Rock Medium

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摘要

地下球形药包爆轰后将产生很强的地震波,其传播受到多种因素的影响。把岩石介质的弹塑性帽盖模型耦合到有限差分法程序中,对一维爆轰波在非均质岩石体中的传播、演化机理进行了数值模拟与分析;着重探讨了一维应力波从“硬”岩石层进入“软”岩石层、从“软”岩石层进入“硬”岩石层时,波在形状和强度等方面的变化规律;同时探讨了岩石介质中存在的“软弱夹层”对一维应力波传播的影响。

Abstract

Violent earthquake waves will be produced when an underground spherically packed explosive is blasted, and their propagation mode is affected by many factors. Based on finite difference method coupled with the famous elastic-plastic cap model of rock, numerical simulation and analyses for the propagation and evolution mechanism of 1 D detonated wave are done. The emphasis is put on the waves propagated from hard rocks into soft rocks, or from soft rocks into hard rocks. At the same time, the influences of weak intercalated bed between rock masses on 1 D stress-waves are also discussed.

关键词

岩石介质 / 一维应力波 / 帽盖模型 / 传播与演化

Key words

rock medium / 1 D stress-waves / cap model / propagation and evolution

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钟光复,王志亮,李永池 非均质岩体中一维应力波演化过程分析[J]. 中国工程科学, 2006, 8(5): 58-62 DOI:

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