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The Numerical Analysis Study of Biaxial Compression Testfor Interlayered Rock Mass
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[1]XIONG Liangxiao,YU Yu,YU Lijun.The Numerical Analysis Study of Biaxial Compression Testfor Interlayered Rock Mass[J].Journal of Zhengzhou University (Engineering Science),2012,33(05):5-9.[doi:10.3969/j.issn.1671-6833.2012.05.002]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 33 Number of periods: 2012 05 Page number: 5-9 Column: Public date: 2012-09-10
Title:
The Numerical Analysis Study of Biaxial Compression Testfor Interlayered Rock Mass
Author(s):
XIONG Liangxiao; YU Yu; YU Lijun
1. Faculty of Architeclural, Civil Engineering and Environment, Ningbo University, Ningbo 315211, China:2. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China; 3Limited company of Nuclear lndstry Southwest Institute of Suvrver and Design, Chengdu 610061 ,china; 4. 2hejiang Geotechnical&Foundation Companay,Ningbo 315040,China
Keywords:
interlayered rock mass;  FLAC; biaxial compression strength; volumetric content
CLC:
TU45
DOI:
10.3969/j.issn.1671-6833.2012.05.002
Abstract:
This paper studies the interlayered rock mass composed of greenschist and marble, the numerical a-nalysis of biaxial compression tests for interlayered rock mass was done by using FLAC3D. Lots of inlluencingfactors such as geometric relationship, volumetric content of marble interlayer and the ratio between lateralstress and axial stress were taken into account in the numerical analysis. The research results show that the bi-axial compression strength when axial loading orientation is parallel to bedding plane and lateral loading orien.tation is perpendicular to bedding plane is largest, and when both axial and lateral loading orientations are par.allel to bedding plane is smallest. The biaxial compression strength will increase firstly and then decrease laterwhen the dip angle of interlayer inereases from 0° to 90° if both axial and lateral loading orientations are paral-lel to bedding plane. The biaxial compression strength will increase firstly and then deerease later when the ra-tio between lateral stress and axial stress increases from 0 to l.0.
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