کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4743403 | 1641798 | 2015 | 4 صفحه PDF | دانلود رایگان |
• The compressive stress trajectory in a slope is parallel to the slope face.
• The compressive stress trajectory approximates the overall slope of benched slopes.
• Stereographic approach used for kinematic analysis of stress-induced instability
• Structural orientations with stress-induced instability can differ from conventional kinematic analysis.
The compressive stress trajectory in a slope is parallel to the slope face. In a benched slope the compressive stress trajectory approximates the down-dip line of the overall slope. In steep, high slopes where compressive stress magnitude is high, slope-parallel compressive stress can play a major role in controlling instability related to movement on geological structures such as bedding, foliation and joints. A stereographic approach can be used for kinematic analysis of stress-induced structural instability. The proposed stereographic approach is based on identification of structural orientations relative to the local stress trajectories. Structures oriented obliquely to the principal compressive stress in a slope can become unstable leading to sliding and toppling mechanisms which can differ in orientation from those recognised in conventional gravity-based kinematic analysis.
Journal: Engineering Geology - Volume 187, 17 March 2015, Pages 56–59