Influence Zones in Alluvium Over Dip‐Slip Faults
Influence Zones in Alluvium Over Dip‐Slip Faults
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DOI：
10.1061/(asce)0733-9410(1984)110:5(599
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发表时间：
1984-05
期刊：
影响因子：
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通讯作者：
D. Cole;P. Lade
中科院分区：
文献类型：
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作者：
D. Cole;P. Lade
在玻璃墙断层试验箱中对密实和松散砂进行了试验，以研究覆盖在活动倾滑断层上的冲积层中可能发生的破坏面的形状和位置。本文回顾了实验过程，并给出了沿基岩断层沿着反向和正向运动的实验结果。根据试验结果，建立了一个简单的模型来预测破坏面的形状和位置。这些都是确定为土壤的深度，土壤的膨胀角，和断层的倾角的函数。还确定了在基岩断层正常运动期间观察到的地堑构造发育的条件。研究的重点是与土力学原理相关的倾滑断层上方无粘性土的变形和破坏机理。简单的模型也评价有关的真实的现场条件。
Tests were performed on dense and loose sand in a glass‐walled fault test box to investigate the shapes and locations of failure surfaces that may occur in alluvium overlying active dip‐slip faults. The experimental procedure is reviewed and the results of the tests with reverse and with normal movements along the bedrock faults are presented. Based on the experimental results, a simple model is developed to predict the shapes and locations of failure surfaces in the soil. These are determined as a function of the depth of the soil, the angle of dilation for the soil, and the dip angle of the fault. The conditions for development of a graben structure, as observed during normal movement on the bedrock fault, are also determined. The emphasis of the study is on the mechanics of deformation and failure in cohesionless soil above dip‐slip faults in relation to principles of soil mechanics. The simple model is also evaluated in relation to real field conditions.