试验研究层间错动带动孔压增长的影响因素

发布时间：2018-01-26 00:38

本文关键词： 层间错动带动三轴试验动孔压　出处：《科学技术与工程》2017年22期 　论文类型：期刊论文

【摘要】：对大光包滑坡层间错动带材料进行动三轴试验,研究在不同条件下动孔压的增长特性,试验结果表明:(1)频率对动孔压的增长没有影响,不同频率下试样达到液化的时间基本相同;(2)动应力越大,孔压增长越快,达到液化需要的振次越少;(3)饱和度对动孔压的增长有较大影响,饱和度越高,样品动孔压增长越快,达到液化需要的振次越少;饱和度降低,动孔压的增速减缓,在应变达到5%时样品没有液化;(4)干密度越小,动孔压增长越快;干密度越大,颗粒之间的咬合力和摩阻力越大,孔压增长缓慢。
[Abstract]:The dynamic triaxial test of the material in the interlayer dislocation zone of Daguangbao landslide is carried out to study the growth characteristics of the dynamic pore pressure under different conditions. The experimental results show that the frequency has no effect on the growth of the dynamic pore pressure. The time of liquefaction of samples at different frequencies is basically the same. 2) the larger the dynamic stress, the faster the increase of pore pressure and the less vibration times needed to achieve liquefaction; The higher the saturation, the faster the increase of the dynamic pore pressure and the less vibration times needed to achieve liquefaction. With the decrease of saturation, the growth rate of dynamic pore pressure slows down, and when the strain reaches 5, the sample does not liquefy. (4) the smaller the dry density, the faster the increase of dynamic pore pressure; The larger the dry density, the greater the bite force and friction between particles, and the slower the pore pressure increases.
【作者单位】：地质灾害防治与地质环境保护国家重点实验室(成都理工大学);
【基金】：国家自然科学基金(41572302)资助
【分类号】：P642.22;TU45
【正文快照】： 引用格式:朱凌,裴向军,崔圣华,等.试验研究层间错动带动孔压增长的影响因素[J].科学技术与工程,2017,17(22):177—181Zhu Ling,Pei Xiangjun,Cui Shenghua,et al.Experimental study of theinfluences of dynamic pore pressure increase of the bedding fault[J].Science Tec

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