- Damage smear method for rock failure process analysis
- G. Li ; X.F. Cheng ; H. Pu ; C.A. Tang
- Book Title / Journal: Journal of Rock Mechanics and Geotechnical Engineering
- Year: 2019 , Volume: 11
- Rock Mechanics
- Keywords: Failure process ; Smear method ; Meso-damage ; Finite element method (FEM) ; Rock failure process analysis (RFPA)
- Abstract
Damage smear method (DSM) is adopted to study trans-scale progressive rock failure process, based on statistical meso-damage model and finite element solver. The statistical approach is utilized to reflect the mesoscopic rock heterogeneity. The constitutive law of representative volume element (RVE) is established according to continuum damage mechanics in which double-damage criterion is considered. The damage evolution and accumulation of RVEs are used to reveal the macroscopic rock failure characteristics. Each single RVE will be represented by one unique element. The initiation, propagation and coalescence of meso-to macro-cracks are captured by smearing failed elements. The above ideas are formulated into the framework of the DSM and programed into self-developed rock failure process analysis (RFPA) software. Two laboratory-scale examples are conducted and the well-known engineering-scale tests, i.e. Atomic Energy of Canada Limited's (AECL's) Underground Research Laboratory (URL) tests, are used for verification. It shows that the simulation results match with other experimental results and field observations. PDF |
- Limit of crustal drilling depth
- Y.S. Zhao ; Z.J. Feng ; B.P. Xi ; D. Yang ; W.G. Liang ; Z.J. Wan
- Book Title / Journal: Journal of Rock Mechanics and Geotechnical Engineering
- Year: 2017 , Volume: 9
- Rock Mechanics
- Keywords: Drilling well ; Limit of drilling depth ; High temperature ; High pressure ; Borehole instability
- Abstract
Deep drilling is becoming the direct and the most efficient means in exploiting deep mineral resources, facilitating to understanding the earthquake mechanism and performing other scientific researches on the Earth's crust. In order to understand the limit of drilling depth in the Earth's crust, we first conducted tests on granite samples with respect to the borehole deformation and stability under high temperature and high pressure using the triaxial servo-controlled rock testing system. Then the critical temperature-pressure coupling conditions that result in borehole instability are derived. Finally, based on the testing results obtained and the requirements for the threshold values of borehole deformations during deep drilling, the limit of drilling depth in the Earth's crust is formulated with ground temperature. PDF |
- Uniform effective stress equation for soil mechanics
- X.-X. Guo ; G. Liu ; L.-T. Shao
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
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- Full-Scale Field Monitoring of a Rainfall-Induced Sliding Slope in Hainan, China
- R.W.M. Yan ; L.G. Tham ; W. Gao ; J.F. Mo ; J.J. Qiu ; A.G. Li
- Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, September 2-6 2013
- Year: 2013
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- Numerical analysis of piled raft foundation in sandy and clayey soils
- E.Y.N. Oh ; D.G. Lin ; Q.M. Bui ; M. Huang ; C. Surarak ; A.S. Balasubramaniam
- 17th International Conference on Soil Mechanics and Geotechnical Engineering (Alexandria)
- Year: 2009
- Pile Foundations ; Numerical & Constitutive Modeling
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- Geotechnical analyses of Taipei International Financial Center (Taipei 101) Construction Project
- D.G. Lin ; S.M. Woo
- 16th International Conference on Soil Mechanics and Geotechnical Engineering (Osaka)
- Year: 2005
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- A point interpolation meshless method based on radial basis functions
- G. Liu ; J.G. Wang
- International Journal for Numerical Methods in Engineering 2002; 54:1623-1648. John Wiley & Sons Ltd
- Year: 2002
- Numerical & Constitutive Modeling
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- Numerical Analysis of Biot's consolidation process by radial point interpolation method
- P. Lin ; G. Liu ; J.G. Wang
- International Journal of Solids and Structures 39 (2002) 1557-1573. Elsevier Science Ltd
- Year: 2002
- Numerical & Constitutive Modeling
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- On the optimal shape parameters of radial basis functions used for 2-D meshless methods
- G. Liu ; J.G. Wang
- Computer Methods in Applied Engineering 191 (2002) 2611-2630. Elsevier Science B.V
- Year: 2002
- Numerical & Constitutive Modeling
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- Point Interpolation Method based on Local Residual Formulation using Radial Basis Functions
- Y.T. Gu ; G. Liu ; J.G. Wang ; L. Yan
- Structural Engineering and Mechanics, Vol. 14, No. 6 (2002) 713-732
- Year: 2002
- Numerical & Constitutive Modeling
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- A point interpolation method for simulating dissipation process of consolidation
- G. Liu ; J.G. Wang ; Y.G. Wu
- Computer Methods in Applied Mechanics and Engineering , 190 (2001) 5907-5922. Elsevier Science B.V
- Year: 2001
- Numerical & Constitutive Modeling
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- A trying scheme for imposing displacement constraints in finite element analysis
- C.E. Augarde ; G.T. Houlsby ; G. Liu
- Communications in Numerical Methods in Engineering. 16:721-732. John Wiley & Sons Ltd
- Year: 2000
- Numerical & Constitutive Modeling
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- Modelling tunneling-induced settlement of masonry buildings
- H.J. Burd ; G.T. Houlsby ; C.E. Augarde ; G. Liu
- roceedings of the ICE, Geotechnical Engineering, Vol 143, pp 17-30, Awarded Telford Prize, Institution of Civil Engineers
- Year: 2000
- Tunneling ; Underground Structures
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- 2-dimensional analysis of settlement damage to masonry buildings caused by tunneling
- G. Liu ; G.T. Houlsby ; C.E. Augarde
- he Structural Engineer, Volume 79/No.1
- Year: 2000
- Tunneling ; Underground Structures
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- Numerical Modelling of Damage to Masonry Buildings due to tunneling
- G. Liu
- PhD Thesis, University of Oxford
- Year: 1997
- Tunneling ; Underground Structures
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