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考虑试样宽度影响的绿片岩双轴压缩蠕变试验

Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering(2013)

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Abstract
对绿片岩试样进行双轴压缩蠕变试验,采用六元件黏弹性流变模型对试验曲线进行拟合分析,研究试样宽度尺寸对蠕变变形规律的影响。研究结果表明:相同应力水平下,当将试样的宽度逐渐增加时,轴向应变和侧向应变并非呈一直增加或减小的趋势;轴向稳态蠕变速率呈逐渐减小的趋势。蠕变试验曲线和理论模型曲线较吻合,说明六元件流变模型能较好地描述绿片岩的黏弹性蠕变特性。
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Key words
Biaxial compression creep test,Greenschist,Hydropower station,Rock mechanics
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