TIME EFFECT ANALYSIS OF ZONAL DISINTEGRATION OF HIGH IN-SITU STRESS SURROUNDING ROCKS AND STUDY OF RELEVANT PARAMETERS BASED ON THE CREEP INSTABILITY THEORY

LI Ying-jie; PAN Yi-shan; ZHANG Meng-tao

Volume 12 Issue 2

Jun. 2006

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Article Navigation > Journal of Geomechanics > 2006 > 12(2): 252-260

LI Ying-jie, PAN Yi-shan, ZHANG Meng-tao, 2006. TIME EFFECT ANALYSIS OF ZONAL DISINTEGRATION OF HIGH IN-SITU STRESS SURROUNDING ROCKS AND STUDY OF RELEVANT PARAMETERS BASED ON THE CREEP INSTABILITY THEORY. Journal of Geomechanics, 12 (2): 252-260.

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TIME EFFECT ANALYSIS OF ZONAL DISINTEGRATION OF HIGH IN-SITU STRESS SURROUNDING ROCKS AND STUDY OF RELEVANT PARAMETERS BASED ON THE CREEP INSTABILITY THEORY

Department of Mechanics and Engineering Science, Liaoning Technical University, Fuxin 123000, Liaoning

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Abstract

It takes some time to form the phenomenon of zonal disintegration of surrounding rocks with high in situ stress,but the time needed is not too long.The creep theory is used to analyze the time effect of zonal disintegration of rocks and deduce the constitutive equation and creep equation of the improved Nishibara rheological model which can describe the third(accelerated) creep stage.On that basis,we can find the fracture zone radius(the distance from the fracture zone to the center of a tunnel) formula during the zonal disintegration of rocks.
- zonal disintegration of rocks,
- creep instability,
- time effect,
- high in situ stress

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TIME EFFECT ANALYSIS OF ZONAL DISINTEGRATION OF HIGH IN-SITU STRESS SURROUNDING ROCKS AND STUDY OF RELEVANT PARAMETERS BASED ON THE CREEP INSTABILITY THEORY

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TIME EFFECT ANALYSIS OF ZONAL DISINTEGRATION OF HIGH IN-SITU STRESS SURROUNDING ROCKS AND STUDY OF RELEVANT PARAMETERS BASED ON THE CREEP INSTABILITY THEORY

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