Gravity-driven deformation characteristics of consequent slate slopes
Journal
Rock Mechanics and Rock Engineering: From the Past to the Future
Journal Volume
1
Start Page
617
End Page
622
ISBN (of the container)
9781138032651
9781138032651
Date Issued
2016
Author(s)
Lo, C.-M.
Abstract
This study investigates the deformation characteristics of consequent slopes in central Taiwan prior to sliding failure. Field surveys, terrain analysis, and physical model tests were performed to explain the gravitational deformation characteristics of consequent slopes under various conditions and to derive the deformation process and failure characteristics.The results thus obtained that distribution of erosion and material weakening mechanisms in gullies are crucial to the deformed process of consequent slopes. Consideration of various conditions, including foliation dip angle, sliding mass geometry, and spacing between foliation planes, indicate that increasing the foliation dip angle and the thickness of sliding mass increases the depth of slope deformation. Foliation dip angle is the most critical factor that controls the deformation of slate, slope length has a weaker effect. Deformation initially began in the tension zone at the top of the slope. The slope body moved gradually along a weak plane at a specific depth and bulged at the slope toe, causing shearing damage nearby. The deformation zone exhibited significant cracking, which facilitated the infiltration of surface water and groundwater, accelerating the deformation, which leads ultimately to failure. © 2016 Taylor & Francis Group, London.
Event(s)
International Symposium on International Society for Rock Mechanics, ISRM 2016
Publisher
CRC Press/Balkema
Description
International Symposium on International Society for Rock Mechanics, ISRM 2016, 29 August 2016 through 31 August 2016, Cappadocia
Type
conference paper