Numerical Simulation on Zonal Disintegration in Deep Surrounding Rock Mass
Joint Authors
Chen, Xu-Guang
Wang, Yuan
Mei, Yu
Zhang, Xin
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-01-30
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
Zonal disintegration have been discovered in many underground tunnels with the increasing of embedded depth.
The formation mechanism of such phenomenon is difficult to explain under the framework of traditional rock mechanics, and the fractured shape and forming conditions are unclear.
The numerical simulation was carried out to research the generating condition and forming process of zonal disintegration.
Via comparing the results with the geomechanical model test, the zonal disintegration phenomenon was confirmed and its mechanism is revealed.
It is found to be the result of circular fracture which develops within surrounding rock mass under the high geostress.
The fractured shape of zonal disintegration was determined, and the radii of the fractured zones were found to fulfill the relationship of geometric progression.
The numerical results were in accordance with the model test findings.
The mechanism of the zonal disintegration was revealed by theoretical analysis based on fracture mechanics.
The fractured zones are reportedly circular and concentric to the cavern.
Each fracture zone ruptured at the elastic-plastic boundary of the surrounding rocks and then coalesced into the circular form.
The geometric progression ratio was found to be related to the mechanical parameters and the ground stress of the surrounding rocks.
American Psychological Association (APA)
Chen, Xu-Guang& Wang, Yuan& Mei, Yu& Zhang, Xin. 2014. Numerical Simulation on Zonal Disintegration in Deep Surrounding Rock Mass. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1049391
Modern Language Association (MLA)
Chen, Xu-Guang…[et al.]. Numerical Simulation on Zonal Disintegration in Deep Surrounding Rock Mass. The Scientific World Journal No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-1049391
American Medical Association (AMA)
Chen, Xu-Guang& Wang, Yuan& Mei, Yu& Zhang, Xin. Numerical Simulation on Zonal Disintegration in Deep Surrounding Rock Mass. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1049391
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1049391