Investigation of rock slope stability using a 3D nonlinear strength-reduction numerical manifold method

doi:10.1016/j.enggeo.2021.106285

	Investigation of rock slope stability using a 3D nonlinear strength-reduction numerical manifold method
	Yang, Yongtao 1,3; Xia, Yang 1,3; Zheng, Hong 1,2; Liu, Zhijun 4,5
刊名	ENGINEERING GEOLOGY
	2021-10-01
卷号	292 页码:15
关键词	3D numerical manifold method Nonlinear strength reduction method MC failure criterion 3D rock slope analysis Generalized Hoek-Brown criterion
ISSN号	0013-7952
DOI	10.1016/j.enggeo.2021.106285
英文摘要	Due to rock masses' nonlinear failure property, it is inappropriate to investigate the stability of rock slopes using the traditional SRM (strength reduction method) which is based on the linear MC (Mohr-Coulomb) failure criterion. To conduct 3D analysis (three dimensional) of rock slopes, we propose a 3D-NSRNMM (3D nonlinear strength reduction numerical manifold method) that is based on the nonlinear GHB (Generalized Hoek-Brown) failure criterion. To effectively implement the proposed 3D-NSRNMM, two methods are adopted to convert the GHB parameters into the average and instantaneous equivalent MC parameters. With the proposed 3D-NSRNMM, the influences of different types of equivalent MC parameters, and boundary conditions on rock slopes' stability are investigated. The numerical results assessed from the proposed 3D-NSRNMM indicate that: 1) boundary conditions will significantly influence the safety factor and failure mode of a rock slope obtained from 3D analysis; 2) the safety factor from two-dimensional analysis is more conservative compared with 3D analysis; 3) Furthermore, safety factors based on the instantaneous equivalent MC parameters are very close to those based on the average equivalent MC parameters, but 3D rock slopes' failure modes based on the two different types of equivalent MC parameters are a little different from each other.
资助项目	Youth Innovation Promotion Association CAS[2020327] ; National Natural Science Foundation of China[12072357] ; National Natural Science Foundation of China[12002140]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000692696200037
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/27889]
专题	中科院武汉岩土力学所
通讯作者	Liu, Zhijun
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Lanzhou Univ, Coll Civil Engn & Mech, Lanzhou 730000, Gansu, Peoples R China 5.Lanzhou Univ, Minist Educ, Key Lab Mech Disaster & Environm Western China, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yongtao,Xia, Yang,Zheng, Hong,et al. Investigation of rock slope stability using a 3D nonlinear strength-reduction numerical manifold method[J]. ENGINEERING GEOLOGY,2021,292:15.
APA	Yang, Yongtao,Xia, Yang,Zheng, Hong,&Liu, Zhijun.(2021).Investigation of rock slope stability using a 3D nonlinear strength-reduction numerical manifold method.ENGINEERING GEOLOGY,292,15.
MLA	Yang, Yongtao,et al."Investigation of rock slope stability using a 3D nonlinear strength-reduction numerical manifold method".ENGINEERING GEOLOGY 292(2021):15.