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STUDY OF INCOMPETENT ROCK RHEOLOGICAL PROCESS AND STRENGTH

Guo Zhi (Institute of Geoligy, Academia Sinica, Beijing 100029)  
The rheological characteristics of incompetent rock are analysed by using U-t curves for the whole process of rheological deformation. The relationship between the rheological deformation rate p and stress a is given. The characteristic stress point of their rheological process is found on μ-d chart. The author proposes an approach to determine rheological stress of the crtical uniform rate rheololgical stress with μji-σij the inflection point of a curve and the principle of determining rheological strength is decribed.
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