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Abstract A series of conventional mechanical laboratory tests such as uniaxial compression tests and triaxial compression tests were carried out to analyze mechanical properties of green schist in Jinping II hydropower station. Based on the analysis of conventional test results，uniaxial and triaxial rheological tests of green schist were designed and completed successfully. On the basis of the testing data obtained，the long-term strength of green schist were analyzed by transition creep law. Through the analysis，we could find that the long-term strength of green schist is about 80% of instantaneous strength. Moreover，through analyzing the shortcomings of transition creep law，and combining the achievement of creep tests，a new quantitative analysis method of long-term strength was proposed and applied to the analysis of long-term strength，so as to offer a meaningful viewpoint.
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Received: 12 April 2012
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2012, Vol. 31 
