›› 2009, Vol. 30 ›› Issue (11): 3237-3241.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Quantitative description of deep tunnel surrounding rocks’ mesostructure under circulating action of temperature

ZHU Zhen-de1，LI Dao-wei1，JIANG Zhi-jian2，LIU Jin-hui3，YANG Yong-jie4   

  1. 1. Geotechnical Research Institute, Hohai University, Nanjing 210098, China; 2. Shenzhen Planning and Design Institute of Hydraulic Engineering, Shenzhen 518000, China; 3. Xin’an Collieries of Zaozhuang Coal Mining Group, Zaozhuang 277642, China; 4. College of Resources and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510, China
  • Received:2008-09-28 Online:2009-11-10 Published:2010-01-07

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Abstract:

The effect of high temperature and temperature cycle is a new question in the progress of rock mechanics. Based on the evolution mechanism of microcracks in fractured rock mass which experienced temperature cycle and using scanning electron microscope(SEM), the fracture mesostructure investigation of heated marble was conducted. The data of microcrack parameters in different temperatures were processed based on statistical theory; and the regularities of distribution of microcrack parameters were obtained. The microcrack distribution in engineering rock was reappearance by means of the Monte Carlo stochastic simulation; the fractal dimension and the evolution characteristics of heated rock were studied by the fractal calculation to the two-dimension microcrack network models. It is a theory and reference for analysing the microscopic changes of inner medium by means of conventional mechanics method.

Key words: fractured rock mass, marble, mesostructure, stochastic simulation, fractal dimension

CLC Number: 

  • TU 452
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