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Geometric model for toppling-prone deformation of layered reverse-dip slope |
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| Authors: | Xie Liangfu Ge Ying Zhang Jiaqi Tan Shunli Wang Bo Yan Echuan Qin Yongjun Wang Jianhu Shi Chen Yu Guangming |
| Institution: | 1.College of Civil Engineering and Architecture, Xinjiang University, Urumqi, 830046, China ;2.Xinjiang Civil Engineering Technology Research Center, Xinjiang University, Urumqi, 830046, China ;3.Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People’s Republic of China ;4.Faculty of Engineering, China University of Geosciences, Wuhan, 430074, China ;5.School of Civil Engineering, Qingdao University of Technology, Qingdao, 266033, China ; |
| 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. |
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