Toppling mechanical characterization based on rheological test of the cantilever beam. Issue 3 (October 2020)

• Record Type: Journal Article
• Authors: Zheng, D; Wang, X
• Is Part Of: IOP conference series. Volume 570:Issue 3(2020)
• Publication Date: 2020-10
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/570/3/032026
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: This study aims to explain the time-sensitive deformation of rock mass toppling and analyze its mechanical characteristics. A mechanical model of the toppling rock beam is abstracted by performing a force analysis of the countertendency layered slope, and the bending rheological test of the cantilever beam is carried out. The flexural rheological model and constitutive equation of the rock cantilever are identified from the experimental results. The strain (ε = 0) at the ultimate depth of development of the toppling deformation and the strain acceleration (a ≥ a2 ) during rock beam dumping bending are selected to obtain the development depth LF and bending depth LZ of the toppling deformation, and LF ≥ LZ, LF > 0, LZ > 0 is used to obtain the development conditions of the toppling deformation. The time-sensitive characteristics of toppling differ from those of other types of slope deformation. This study could serve as a reference for elucidating the mechanical mechanism and evaluating the stability of the toppling deformation.