| 大理岩脆-韧性转换变形实验研究 |
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| 关键词:deformation experiment of rocks brittle-ductile transform microcrack twin crystal deforational behavior |
| 基金项目:大理岩脆-韧性转换变形实验研究 |
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| Experiment on the Brittle-Ductile Transform Deformation of Marbles |
| In this paper, two groups of marbles are used in the process of experiment on the brittle-ductile transform deformation. One is under the room temperature and the confining pressure 20-400 MPa; the other at 15-200℃ and the confining pressure 50-150MPa. The confining pressure of the former during which brittle-ductile transform deformation appears, is 50-400MPa, of which the most obvious one is 50-150MPa, and it shows strain harbening; temperature of the brittle-ductile transform of the latter is 50-200℃, of which the most obvous one is about 100℃ and it shows strain soften-ing. On the basis of the analysis of the microscopic deformation and microscopic struc-rures of the marbles, some marks on the brittle-ductile deformation of rocks including mechanical property, microscopic deformation and microsceopic structures characteristics etc., are discussed. Meanwhile, the important forms of the brittle-ductile transform of marbles are pointed out, that is, microcrack, intracrystalline slip and cataclastic flowage. The results of this experiment are very important to the research of the gene-sis of weak zone of the surface structures and the shallow structural deformation in the crust. |
| Wu Shuren,Yan Tongzhen,Jian Wenxing.1996.Experiment on the Brittle-Ductile Transform Deformation of Marbles[J].Acta Geoscientica Sinica,17(z1):104-111. |
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