Geometric model for toppling-prone deformation of layered reverse-dip slope

Liangfu Xie (), Ying Ge (), Jiaqi Zhang, Shunli Tan, Bo Wang, Echuan Yan, Yongjun Qin, Jianhu Wang, Chen Shi and Guangming Yu
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Liangfu Xie: Xinjiang University
Ying Ge: The Hong Kong Polytechnic University
Jiaqi Zhang: Xinjiang University
Shunli Tan: Xinjiang University
Bo Wang: Xinjiang University
Echuan Yan: China University of Geosciences
Yongjun Qin: Xinjiang University
Jianhu Wang: Xinjiang University
Chen Shi: Xinjiang University
Guangming Yu: Xinjiang University

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2021, vol. 106, issue 3, No 7, 1879-1894

Abstract: Abstract This paper presents the analyses of toppling response of layered reverse-dip slopes under the influence of geometric factors of slope angle, strata thickness and dip. The toppling response of reverse-dip slopes under different geometric factors is obtained by using the discrete element code UDEC. Then, a prediction model for toppling deformation is developed by utilizing support vector machine and the toppling-prone combinations of these geometric factors are determined from a total of 120 samples of reverse-dip slopes. The study has shown that the geometric model is a quarter of a spheroid with a slope angle of 80°, a strata dip of 80°, and a strata thickness of 0.19 m as the center. The length of the long equatorial radius of the spheroid is 31° (strata dip axial), that of the short equatorial radius is 21° (slope angle axial), and the polar radius is 0.075 m (strata thickness axial). And the ratio of long equatorial radius, short equatorial radius, and polar radius is 2.48:1.68:1.00.

Keywords: Reverse-dip slope; Toppling; Geometric factors; Support vector machine (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s11069-021-04516-z

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