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2007•Journal of North China Institute of Water Conservancy and Hydroelectric PowerRequires access

True Triaxial Experimental Study on Rock Strength and Deformation

Handong Liu

Open publisher page 4 citations

Abstract

In order to get the behaviours of strength and deformation of rock in true triaxial conditions,rock strength is simulated through true triaxial experiment.The peak value of strength increases with the intermediate principal stress and the maximum of increase is 65.8%.The rock deformation is plastic characteristics with low intermediate principal stress and is transferred from plastic to brittle characteristics with high intermediate principal stress.The rock failure is depended on the deference of the principal stress(σ1-σ3),but also is good relationship with intermediate principal stress.

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What this paper is about

In order to get the behaviours of strength and deformation of rock in true triaxial conditions,rock strength is simulated through true triaxial experiment.The peak value of strength increases with the intermediate principal stress and the maximum of increase is 65.8%.The rock deformation is plastic characteristics with low intermediate principal stress and is transferred from plastic to brittle characteristics with high intermediate principal stress.The rock failure is depended on the deference of the principal stress(σ1-σ3),but also is good relationship with intermediate principal stress.

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Available abstract

In order to get the behaviours of strength and deformation of rock in true triaxial conditions,rock strength is simulated through true triaxial experiment.The peak value of strength increases with the intermediate principal stress and the maximum of increase is 65.8%.The rock deformation is plastic characteristics with low intermediate principal stress and is transferred from plastic to brittle characteristics with high intermediate principal stress.The rock failure is depended on the deference of the principal stress(σ1-σ3),but also is good relationship with intermediate principal stress.

Key concepts: Principal stress, Geotechnical engineering, Triaxial shear test, Geology, Brittleness, Deformation (meteorology), Stress (linguistics), Geological Strength Index

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