An experimental study on variation of <Emphasis Type="Italic">b</Emphasis> value during deformation of rock samples with different structural models |
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| Authors: | Chen Shun-yun Liu Li-qiang Ma Sheng-li Ma Jin |
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| Institution: | 1.State Key Laboratory of Earthquake Dynamics, Institute of Geology,China Earthquake Administration,Beijing,China |
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| Abstract: | A preliminary study of b value of rocks with two kinds of structural models has been made on the base of a new acoustic emission recording system. It shows that b value of the sample decreases obviously when the sample with compressive en echelon faults changes into a tensile one after interchange occurs between stress axis σ 1 and σ 2. A similar experiment is observed when the sample with tensile en echelon faults changes into that with a bend fault after two segments of the en echelon fault linking up. These facts indicate that the variation of b value may contain the information of the regional dominant structural model. Therefore, b-value analyses could be a new method for studying regional dominant structural models. |
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