内聚力和内摩擦角对岩样峰值强度影响规律探讨OA北大核心CSTPCD
The Discussion on Effect of Cohesion and Internal Frictional Angle on the Peak Strength of Rock
为了探讨内聚力C和内摩擦角φ对岩样峰值强度的影响规律，采用数值模拟手段，获取岩样轴向应力、轴向位移、峰值强度随C、φ值逐渐下降的变化规律。研究结果表明：内聚力C和内摩擦角φ数值的降低，均会导致应力位移曲线峰后平缓；当内摩擦角φ值降低40％时，峰值强度降低39．5％，峰值强度阶段降幅最大值为10．53％，峰值强度随次数的增加向一极值发展，且峰值强度阶段降幅有减小趋势；而当内聚力C值减小40％时，峰值强度降低29．82％，阶段降幅最大值7．98％；对…查看全部>>
In order to study influence of cohesion and internal frictional angle on the peak strength of rock sample , the change rules of axial stress , axial displacement and peak strength with the de-cline of C and φwere obtained by means of numerical simulation .The results showed that the de-clined cohesion and internal frictional angle would cause stress -displacement curve after the peak smooth.When internal frictional angle value was reduced by 40% and the peak…查看全部>>
刘德克;李克钢
昆明理工大学国土资源工程学院，云南昆明，650000昆明理工大学国土资源工程学院，云南昆明，650000
建筑与水利
变化规律峰值强度内聚力内摩擦角
change rulespeak strengthcohesioninternal frictional angle
《矿产保护与利用》 2015 (3)
干湿交替作用下泥质砂岩强度劣化机理及损伤本构关系研究
16-19,4
国家自然科学基金（41202229，41362013）
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