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应力波在一维节理岩体中传播规律的试验研究与数值模拟
Authors
姚再兴
李世海
田振农
肖南
Publication date
15 June 2008
Publisher
Abstract
在测定撞击载荷形式的基础上,通过试验研究应力波在一维节理岩体中的传播规律。分析完整岩体中各质点的振动形式以及不同形式的撞击载荷下对质点振动的影响,在完整岩体中质点的振动形式很有规律,其振动频率单一,且与一维岩柱的长度有关;分析结构面附近质点的振动特征,试验结果表明结构面附近质点振动有增强现象;还分析结构面组数对应力波传播衰减规律的影响,随着结构面组数的增加,质点振动衰减便快,应力波随距离的衰减也很明显。在块体离散元的基础上,研究多尺度离散元模型,并用它来模拟应力波在节理岩体中的传播规律,取得较好的效果,说明块体离散元适合模拟岩体中应力波的传播衰减规律
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 12/02/2018