Numerical Simulation of Rock Failure Process with a 3D Grain-Based Rock Model
Joint Authors
Zhao, Huiling
Chen, Fan
Zhang, Zengwei
Wang, Tuo
Zhang, Fengshou
Zhang, Chao
Wang, Chao
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-07-31
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
A grain-based rock model was developed and applied to study mechanical characteristics and failure micromechanics in thick-walled cylinder and wellbore stability tests.
The rock is represented as an assembly of tetrahedral blocks with bonded contacts.
Material heterogeneity is modeled by varying the tensile strength at the block contacts.
This grain-based rock model differs from previous disk/sphere particle-based rock models in its ability to represent a zero (or very low) initial porosity condition, as well as highly interlocked irregular block shapes that provide resistance to movement even after contact breakage.
As a result, this model can reach higher uniaxial compressive strength to tensile strength ratios and larger friction coefficients than the disk/sphere particle-based rock model.
The model captured the rock fragmentation process near the wellbore due to buckling and spalling.
Thin fragments of rock similar to onion skins were produced, as observed in laboratory breakout experiments.
The results suggest that this approach may be well suited to study the rock disaggregation process and other geomechanical problems in the rock excavation.
American Psychological Association (APA)
Zhang, Zengwei& Chen, Fan& Zhang, Chao& Wang, Chao& Wang, Tuo& Zhang, Fengshou…[et al.]. 2020. Numerical Simulation of Rock Failure Process with a 3D Grain-Based Rock Model. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1122993
Modern Language Association (MLA)
Zhang, Zengwei…[et al.]. Numerical Simulation of Rock Failure Process with a 3D Grain-Based Rock Model. Advances in Civil Engineering No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1122993
American Medical Association (AMA)
Zhang, Zengwei& Chen, Fan& Zhang, Chao& Wang, Chao& Wang, Tuo& Zhang, Fengshou…[et al.]. Numerical Simulation of Rock Failure Process with a 3D Grain-Based Rock Model. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1122993
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122993