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中文摘要：
在对火山岩圆球形孔隙结构研究的基础上,运用岩石破裂过程分析系统模拟了火山岩单轴压缩过程,研究了孔径及孔隙率对火山岩岩石变形强度特性的影响.研究结果表明：孔径从0.1 mm增加到0.3 mm,极限应变的降低百分率随着孔隙率的增加保持在一定范围内波动;弹性模量的降低百分率随着孔隙率的增加逐渐增加,并且呈现明显的线性增加趋势.在恒定孔隙率下,孔径对其影响主要表现在随孔径的增大,破坏模式由剪切破坏逐渐向劈裂破坏过渡.
英文摘要：
Based on the study of the pore structure of volcanic rock, the uniaxial compression process of volcanic rock was numerically performed to investigate the influence of pore size and porosity on strength characteristics of volcanic rock using rock failure process analysis system (RFPA2D). The results show that under the pore size increasing from 0.1 to 0.3 mm, reduction percentage of ultimate strain with the increase of porosity keeps fluctuation within a certain range, elastic modulus' reduction percentage increase with the increase of porosity and shows a linear increasing trend. Under the same porosity, the influence of pore size mainly shows that, with the increasing of the pore size, failure mode of the samples gradually tends to split fracture. ? 2017, Editorial Department of Journal of Northeastern University. All right reserved.
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Numerical Study of Stress Intensity Factor in Notched Specimens using Extended Finite Element Method
Hydro - Mechanical Coupled Analysis of the Stability of Surrounding Rock Mass of Underground Water -
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