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Abstract�� Generally, the macroscopic properties of a rock are reflected well in its micro-characteristics, so further research of microscopic properties is significant to the understanding of macroscopic properties and their practical applications in engineering. Using a lamellar casting test and a scanning electron microscope test, as well as the results of a point-loading test and a conventional mechanical test, the mineral composition and microstructure of surrounding rocks in the exploration adit of a hydropower station in southwest China was experimentally studied. The correlation between the micro-character and macro-mechanical properties of the rock was analyzed and the effects of the rock's micro-characteristics on the stability of the surrounding rock was stated from a microscopic view to establish the theoretical and technical basis for the design and construction of the tunnel support.

Keywords�� Schist mineral composition, Microstructure, Mechanical properties, Stability of surrounding rock

��: 2013-11-13

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��1, 2, ʯԥ��1�� .��΢��Ƭ��ѧ��о�[J] �ִ��, 2014,V51(3): 73-78

WANG Jia-Xing-1, 2 , SHI Yu-Chuan-1 etc .A Study of the Mechanical Property of Schist Based on Microscopic Tests[J] MODERN TUNNELLING TECHNOLOGY, 2014,V51(3): 73-78

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http://www.xdsdjs.com/CN/ �� http://www.xdsdjs.com/CN/Y2014/V51/I3/73

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