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Analysis of the Fabric Changes in a Simulated Clay-Rock Mixture under Shear

机译：剪切作用下模拟粘土-岩石混合物中织物的变化分析

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Mudflow deposits have a distinct fabric consisting of a mixture of clay and large dispersed rock-like particles. The evaluation of the mechanical properties of these mixtures is challenging. Very little is known about the changes in fabric experienced by these mixtures when subjected to shear, and how these changes influence the failure of the mixtures. In this, study the fabric changes will be studied using simulated clay-rock mixtures. Clay samples containing wooden rods were subjected to direct shear in a Plane Stress Direct Shear Apparatus (PSDSA). The tests indicated that the clay developed regions of intensified compression at the interface between the clay and the rods. Failure took place in these regions. If more than one rod was present in the samples, the regions of failure interacted producing a continuous failure surface. Also, clay regions near the rods developed voids that influenced the permeability of the simulated clay-rock mixtures.
机译：泥浆流沉积物具有独特的织物，该织物由粘土和大的分散的岩石状颗粒的混合物组成。这些混合物的机械性能的评估具有挑战性。对于这些混合物在受到剪切作用时所经历的织物变化以及这些变化如何影响混合物的破坏知之甚少。在本文中，将使用模拟的粘土-岩石混合物研究织物的变化。在平面应力直接剪切仪（PSDSA）中对包含木棒的粘土样品进行直接剪切。试验表明，粘土在粘土和棒之间的界面处形成了增强的压缩区域。在这些地区发生了失败。如果样品中存在一根以上的棒，则失效区域相互作用，产生连续的失效表面。而且，靠近杆的粘土区域会形成空隙，这些空隙会影响模拟的粘土-岩石混合物的渗透性。

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