›› 2011, Vol. 32 ›› Issue (S1): 155-159.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of physico-mechanical characteristics of rocks in slope of Mengku iron mine under freezing-thawing cyclic effect

LUO Xue-dong1, HUANG Cheng-lin1, 2, RONG Zeng-xiang3, LÜ Qiao-sen1   

  1. 1. Faculty of Engineering, China University of Geosciences, Wuhan 430074, China; 2. Department of Mine Management, Xijiang Bayi Iron & Steel Co., Ltd., Bao Steel Group Co., Wulumuqi 830022, China; 3. Geotechnical Branch, Hubei Communications Planning and Design Institute, Wuhan 430051, China
  • Received:2010-12-21 Online:2011-05-15 Published:2011-05-16

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Abstract: By means of the freezing-thawing tests of different times, four types of rocks (granulite, amphibole granulite, bedding granulite and biotite-amphibole-plagioclase gneiss) sampling from the slope of Mengku Iron Mine were studied from the aspects of physico-mechanical characteristics that contains appearance, mass loss rate, strength loss rate, freezing-thawing factor and freeze-thaw weathering factor. The research results show that the degradation of granulite and amphibole granulite are unapparent while bedding granulite and biotite-amphibole-plagioclase gneiss are obvious. Taking blasting vibration of mining into account, slopes of the latter two rocks were easier to be damaged under the freezing-thawing effect; they should be focused on during design and construction.

Key words: freezing-thawing cyclic effect, mine slope, rock block, physico-mechanical characteristics

CLC Number: 

  • TU 452
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