Numerical Simulation on Damage and Failure Mechanism of Rock under Combined Multiple Strain Rates
Joint Authors
Li, S. H.
Wei, Jiong
Niu, Leilei
Li, Shuai
Zhu, Wan-Cheng
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-20, 20 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-11
Country of Publication
Egypt
No. of Pages
20
Main Subjects
Abstract EN
During underground hard-rock mining, the drilling and blasting method currently remains the most economical excavation method, and the rock may experience a multistrain-rate spectrum under quasi-static, dynamic, and rheological loading conditions and their combination as well.
The study on the damage mechanism of rock under multistrain-rate condition that induced by mining excavation is the fundamental issue for predicting the mining-induced hazards such as rockburst.
In this study, the state of the art of rock damage and failure under different strain rates is reviewed first.
Then, the numerical model for rock failure under multiple strain rates is formulated when the rock damage is taken as the main thread.
Meanwhile, we summarize our work in this area over the past ten years, and the constitutive law for the damage and failure of rock under multistrain rates is presented.
Finally, several numerical examples, i.e., rock damage and failure under combined static and dynamic load, rock damage and failure triggered by dynamic stress redistribution due to excavation, rock damage and failure induced by blasting, and rock damage and failure due to the combination of dynamic disturbance and rheological load, are presented.
Based on these numerical simulations, the associated rock damage mechanism and failure behaviors under differently combined multiple strain rates are clarified, which may provide a theoretical basis for clarifying the rock failure mechanism during rockbursts and rock blasting.
Also, further studies on the damage and failure of rock under multiple strain rates are suggested.
American Psychological Association (APA)
Zhu, Wan-Cheng& Wei, Jiong& Niu, Leilei& Li, Shuai& Li, S. H.. 2018. Numerical Simulation on Damage and Failure Mechanism of Rock under Combined Multiple Strain Rates. Shock and Vibration،Vol. 2018, no. 2018, pp.1-20.
https://search.emarefa.net/detail/BIM-1215264
Modern Language Association (MLA)
Zhu, Wan-Cheng…[et al.]. Numerical Simulation on Damage and Failure Mechanism of Rock under Combined Multiple Strain Rates. Shock and Vibration No. 2018 (2018), pp.1-20.
https://search.emarefa.net/detail/BIM-1215264
American Medical Association (AMA)
Zhu, Wan-Cheng& Wei, Jiong& Niu, Leilei& Li, Shuai& Li, S. H.. Numerical Simulation on Damage and Failure Mechanism of Rock under Combined Multiple Strain Rates. Shock and Vibration. 2018. Vol. 2018, no. 2018, pp.1-20.
https://search.emarefa.net/detail/BIM-1215264
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215264