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  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院页岩气与地质工程重点实验室
Geometric characteristics of slope toppling failure and its interpretation

文献类型：期刊论文

作者Cao, Jiayuan1,2,3; Ma, Fengshan1,2; Xu, Jiamo1,2; Guo, Jie1,2; Lu, Rong1,2,3
刊名CURRENT SCIENCE
出版日期2020-05-25
卷号118期号:10页码:1569-1574
关键词Cantilever beam elastic theory geometric characteristics rigid body element soft material small model toppling failure
ISSN号0011-3891
DOI10.18520/cs/v118/i10/1569-1574
英文摘要Several studies have simulated and studied the phenomenon of toppling failure caused by open-pit excavation. However, these studies do not involve or neglect the interpretation of some special geometric characteristics and laws of this deformation. Only by understanding the subtle geometric characteristics and geometric laws of slope toppling failure, can we understand the conditions, processes and mechanisms of such deformation. In this study, a soft material, small model, deformable element method is successfully used to simulate the phenomenon of the bending each layer element from the lower part of the slope to the upper, with the dislocation distance (scraps on the slope) being bigger. This method overcomes the shortcoming of the rigid body element that traditional methods cannot simulate. Finally, the conditions and mechanism of this phenomenon are further analysed and explained by structural unit of inclined composite cantilever and elastic theory. Under the action of the body force component f(x) which is parallel to the longitudinal direction of the cantilever, the geometric characteristics of the single cantilever in the composite cantilever are changed such that the upper part of it is narrowed and the lower part of it is widened. Under the action of the body force component f(y) which is perpendicular to the longitudinal direction of the cantilever, the cantilever is bent. Under the action of these two body force components, the composite cantilever is bent as a whole after open-pit excavation. Because of the change in the geometric shape of the cantilever, any single cantilever has a larger deflection than the other single cantilever below it; that is, greater the deflection of each cantilever along the slope upwards, greater is the curvature of the corresponding point. Finally from the lower part of the slope to the upper, the scraps on the slope are bigger.
资助项目Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0904] ; National Key Research and Development Program of China[2018YFC1505301] ; International Cooperation Program of Chinese Academy of Sciences[131551KYSB20180042]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000535623000015
出版者INDIAN ACAD SCIENCES
资助机构Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; International Cooperation Program of Chinese Academy of Sciences ; International Cooperation Program of Chinese Academy of Sciences ; International Cooperation Program of Chinese Academy of Sciences ; International Cooperation Program of Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; International Cooperation Program of Chinese Academy of Sciences ; International Cooperation Program of Chinese Academy of Sciences ; International Cooperation Program of Chinese Academy of Sciences ; International Cooperation Program of Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; International Cooperation Program of Chinese Academy of Sciences ; International Cooperation Program of Chinese Academy of Sciences ; International Cooperation Program of Chinese Academy of Sciences ; International Cooperation Program of Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; International Cooperation Program of Chinese Academy of Sciences ; International Cooperation Program of Chinese Academy of Sciences ; International Cooperation Program of Chinese Academy of Sciences ; International Cooperation Program of Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/96688]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Ma, Fengshan
作者单位1.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Cao, Jiayuan,Ma, Fengshan,Xu, Jiamo,et al. Geometric characteristics of slope toppling failure and its interpretation[J]. CURRENT SCIENCE,2020,118(10):1569-1574.
APA Cao, Jiayuan,Ma, Fengshan,Xu, Jiamo,Guo, Jie,&Lu, Rong.(2020).Geometric characteristics of slope toppling failure and its interpretation.CURRENT SCIENCE,118(10),1569-1574.
MLA Cao, Jiayuan,et al."Geometric characteristics of slope toppling failure and its interpretation".CURRENT SCIENCE 118.10(2020):1569-1574.

入库方式： OAI收割

来源：地质与地球物理研究所

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