Comparisons between centrifuge and numerical modeling results for slope toppling failure
نویسندگان
چکیده
منابع مشابه
Numerical analysis of slide-head-toppling failure
In layered and blocky rock slopes, toppling failure is a common mode of instability that may occur in mining engineering. If this type of slope failure occurs as a consequence of another type of failure, it is referred to as the secondary toppling failure. “Slide-head-toppling” is a type of secondary toppling failures, where the upper part of the slope is toppled as a consequence of a semi-circ...
متن کاملNumerical Modeling of Rock Slopes with a Potential of Block-Flexural Toppling Failure
One of the most important instabilities of rock slopes is toppling failure. Among the types of toppling failure, block-flexural failures are more common instability which occurs in nature. In this failure, some rock blocks break because of tensile stresses, and some overturn under their weights, and next to all of them topple together. Physical and theoretical modeling of this failure is studie...
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A series of physical modeling tests were conducted by means of a beam type geotechnical centrifuge machine in order to investigate the drainage impact on the slope failure mechanism under centrifugal acceleration. Meanwhile, the phenomenon of stress redistribution in undercut slopes and the formation of arching effect were studied. For this purpose, a poorly graded sandy soil (Silica sand No. 6...
متن کاملPhysical and theoretical modeling of rock slopes against block-flexure toppling failure
Block-flexure is the most common mode of toppling failure in natural and excavated rock slopes. In such failure, some rock blocks break due to tensile stresses and some overturn under their own weights and then all of them topple together. In this paper, first, a brief review of previous studies on toppling failures is presented. Then, the physical and mechanical properties of experimental mode...
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A numerical multiple crack interaction model was developed to simulate the failure process in brittle solids containing significant populations of flaws. The model, which is 2D, allows for the growth of microcracks on a regular array of potential crack sites. Individual cracks may be oriented vertically, horizontally or at 450 to the sample axes. Quasi-static equilibrium equations are expressed...
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ژورنال
عنوان ژورنال: Science China Technological Sciences
سال: 2015
ISSN: 1674-7321,1869-1900
DOI: 10.1007/s11431-015-5889-x