Time-Varying Effect of Ductile Flexural Toppling Failure on Antidip Layered Rock Slope
Ductile flexural toppling failure is a common form of toppling failure, and it is the product of long-term geological history and shows the characteristics of long-term deformation and progressive failure. The creep characteristics of rock mass have been seldom considered in the current research on...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2022-07-01
|
| Series: | Frontiers in Earth Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.943700/full |
| _version_ | 1811288134654099456 |
|---|---|
| author | Junchao Cai Junchao Cai Da Zheng Da Zheng Nengpan Ju Nengpan Ju Jue Wang Jue Wang Xin Zhou Xin Zhou Da Li |
| author_facet | Junchao Cai Junchao Cai Da Zheng Da Zheng Nengpan Ju Nengpan Ju Jue Wang Jue Wang Xin Zhou Xin Zhou Da Li |
| author_sort | Junchao Cai |
| collection | DOAJ |
| description | Ductile flexural toppling failure is a common form of toppling failure, and it is the product of long-term geological history and shows the characteristics of long-term deformation and progressive failure. The creep characteristics of rock mass have been seldom considered in the current research on toppling, especially interlayer creep of rock layers in the process of toppling. Based on the thought of deformation stability analysis, the flexural toppling failure was divided into the following four stages: start-up, rapid deformation, transient stability, and long-term creep stages. Combined with mechanical analysis, the developmental conditions of the start-up, transient stability, and long-term creep development stages are discussed respectively. Finally, several cases were selected to analyze the stage and the stability of the toppling deformation body, as well as to verify the rationality of the mechanical analysis condition. Study results show that the start-up conditions meet Equation 2, the rock layer inclination and slope angle is 0.5π−φ in the transient stability stage, and that angle is the infinite 0.5π in the long-term creep stage. Other external forces (such as water pressure) will intensify the development of ductile flexural toppling failure, so that the angle between the toppled bedding surface and the slope surface increases. It is of great significance to analyze the development stage of the ductile flexural toppling, comprehensively analyze and evaluate the stability of the ductile flexural toppling, reasonably develop and utilize its self-stability ability, and set up support measures. |
| first_indexed | 2024-04-13T03:31:56Z |
| format | Article |
| id | doaj.art-b17115008e8a43a78a22ac251f74aa7d |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-13T03:31:56Z |
| publishDate | 2022-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-b17115008e8a43a78a22ac251f74aa7d2022-12-22T03:04:28ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632022-07-011010.3389/feart.2022.943700943700Time-Varying Effect of Ductile Flexural Toppling Failure on Antidip Layered Rock SlopeJunchao Cai0Junchao Cai1Da Zheng2Da Zheng3Nengpan Ju4Nengpan Ju5Jue Wang6Jue Wang7Xin Zhou8Xin Zhou9Da Li10School of Civil Engineering, Henan University of Science and Technology, Luoyang, ChinaState Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, ChinaState Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, ChinaCollege of Environment and Civil Engineering, Chengdu University of Technology, Chengdu, ChinaState Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, ChinaCollege of Environment and Civil Engineering, Chengdu University of Technology, Chengdu, ChinaState Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, ChinaCollege of Environment and Civil Engineering, Chengdu University of Technology, Chengdu, ChinaState Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, ChinaCollege of Environment and Civil Engineering, Chengdu University of Technology, Chengdu, ChinaSchool of Civil Engineering, Henan University of Science and Technology, Luoyang, ChinaDuctile flexural toppling failure is a common form of toppling failure, and it is the product of long-term geological history and shows the characteristics of long-term deformation and progressive failure. The creep characteristics of rock mass have been seldom considered in the current research on toppling, especially interlayer creep of rock layers in the process of toppling. Based on the thought of deformation stability analysis, the flexural toppling failure was divided into the following four stages: start-up, rapid deformation, transient stability, and long-term creep stages. Combined with mechanical analysis, the developmental conditions of the start-up, transient stability, and long-term creep development stages are discussed respectively. Finally, several cases were selected to analyze the stage and the stability of the toppling deformation body, as well as to verify the rationality of the mechanical analysis condition. Study results show that the start-up conditions meet Equation 2, the rock layer inclination and slope angle is 0.5π−φ in the transient stability stage, and that angle is the infinite 0.5π in the long-term creep stage. Other external forces (such as water pressure) will intensify the development of ductile flexural toppling failure, so that the angle between the toppled bedding surface and the slope surface increases. It is of great significance to analyze the development stage of the ductile flexural toppling, comprehensively analyze and evaluate the stability of the ductile flexural toppling, reasonably develop and utilize its self-stability ability, and set up support measures.https://www.frontiersin.org/articles/10.3389/feart.2022.943700/fullantidip layered rock slopeductile flexural topplingtime-varying effectshear creeptransient stable state |
| spellingShingle | Junchao Cai Junchao Cai Da Zheng Da Zheng Nengpan Ju Nengpan Ju Jue Wang Jue Wang Xin Zhou Xin Zhou Da Li Time-Varying Effect of Ductile Flexural Toppling Failure on Antidip Layered Rock Slope Frontiers in Earth Science antidip layered rock slope ductile flexural toppling time-varying effect shear creep transient stable state |
| title | Time-Varying Effect of Ductile Flexural Toppling Failure on Antidip Layered Rock Slope |
| title_full | Time-Varying Effect of Ductile Flexural Toppling Failure on Antidip Layered Rock Slope |
| title_fullStr | Time-Varying Effect of Ductile Flexural Toppling Failure on Antidip Layered Rock Slope |
| title_full_unstemmed | Time-Varying Effect of Ductile Flexural Toppling Failure on Antidip Layered Rock Slope |
| title_short | Time-Varying Effect of Ductile Flexural Toppling Failure on Antidip Layered Rock Slope |
| title_sort | time varying effect of ductile flexural toppling failure on antidip layered rock slope |
| topic | antidip layered rock slope ductile flexural toppling time-varying effect shear creep transient stable state |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.943700/full |
| work_keys_str_mv | AT junchaocai timevaryingeffectofductileflexuraltopplingfailureonantidiplayeredrockslope AT junchaocai timevaryingeffectofductileflexuraltopplingfailureonantidiplayeredrockslope AT dazheng timevaryingeffectofductileflexuraltopplingfailureonantidiplayeredrockslope AT dazheng timevaryingeffectofductileflexuraltopplingfailureonantidiplayeredrockslope AT nengpanju timevaryingeffectofductileflexuraltopplingfailureonantidiplayeredrockslope AT nengpanju timevaryingeffectofductileflexuraltopplingfailureonantidiplayeredrockslope AT juewang timevaryingeffectofductileflexuraltopplingfailureonantidiplayeredrockslope AT juewang timevaryingeffectofductileflexuraltopplingfailureonantidiplayeredrockslope AT xinzhou timevaryingeffectofductileflexuraltopplingfailureonantidiplayeredrockslope AT xinzhou timevaryingeffectofductileflexuraltopplingfailureonantidiplayeredrockslope AT dali timevaryingeffectofductileflexuraltopplingfailureonantidiplayeredrockslope |