深部斜长角闪岩流变试验及模型研究

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Abstract Relaxation experiment on deep amphibolite samples from Jinchuan II mining area as conducted using multi-step incremental loading method. Further analysis of relaxation experimental results was made in contrast to those of creep experiment conducted by multi-step incremental cyclic loading and unloading. Creep experiment mainly reflected the long-term strength of rocks；while relaxation test proved that the rocks had residual strength after rupture. Continuous relaxation law and non-continuous ladder-type relaxation law were found through relaxation curves. The result showed that the non-continuous ladder-type relaxation law was closely related to micro-cracks initiation and original cracks propagation. The elastic and viscoelasto plastic model(K-B model) was adopted to research the visco-elasticplasticity of deep amphibolite based on the test data. The analysis of fitting curves and fitting parameters illustrated that the curves of K-B model were well agreed with those of both creep and relaxation rock samples. It was concluded that the K-B model can properly describe the rheological characteristics of amphibolite in Jinchuan II mining area.

Key words： rock mechanics deep rock multi-step incremental loading relaxation multi-step incremental cyclic loading and unloading creep elastic and visco-elasto plastic model

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	Articles by authors
	CAO Ping1
	ZHENG Xinping1
	LI Na1
	ZHANG Xiangyang1
	2

Cite this article:

CAO Ping1,ZHENG Xinping1,LI Na1, et al. EXPERIMENT AND MODEL STUDY OF RHEOLOGICAL CHARACTERISTICS FOR DEEP AMPHIBOLITE[J]. , 2012, 31(S1): 3015-3021.

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https://rockmech.whrsm.ac.cn/EN/Y2012/V31/IS1/3015

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