Physical Modeling of Compressive Behaviors of Anchored Rock Masses
Publication: International Journal of Geomechanics
Volume 11, Issue 3
Abstract
The mechanical characteristics of rock masses anchored with bolts play a critical role in anchored slope and underground buildings. In this study, the components and their mixing ratios of similar materials, such as rock masses, are simulated. The materials similar to the anchored bolts and cement are selected. The physical and mechanic properties of these materials are tested. Based on these, an experimental model and a method are designed with a focus on a uniaxial compression test on anchored rock masses. A series of tests on the anchored specimens’ uniaxial compression strength are conducted under the conditions of varying numbers and installations of anchor bolts. The results reveal that compared with the specimens without anchor bolts, the peak strength, elastic modulus, and shear strength of the specimens with both perpendicular and horizontal bolts are improved. Furthermore, it is indicated that the improvement attributable to the horizontal bolts is slightly lower than that with vertical bolts. This suggests that the uniaxial compression strength is heterogeneous in different directions.
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Acknowledgements
This work is funded by the NNSFCNational Natural Science Foundation of China, No. 51078042.
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Information & Authors
Information
Published In
International Journal of Geomechanics
Volume 11 • Issue 3 • June 2011
Pages: 186 - 194
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Jun 28, 2010
Accepted: Oct 17, 2010
Published online: Oct 22, 2010
Published in print: Jun 1, 2011
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