JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2011, Vol. 41 ›› Issue (5): 82-85.

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Tri-axial compression test study on mechanical characteristics of the oil shale under the water

LIANG Bing, LAN Bo, WANG Jun-guang   

  1. School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China
  • Received:2011-03-09 Online:2011-10-16 Published:2011-03-09

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Abstract:

 For researching mechanical Properties of the oilshale, it was got the sample form Yedian Jilin Province was studied by using the  hydraulic testing enginery of YE-200A and home-made triaxial stress room to make triaxial compression experiment to the oilshale. By triaxial compression tests under the conditions of different confining Pressure and different hydration time, the evolution laws was revealed  for  all stress-strain, Peak strength, elastic modulus and poisson′s ratio with different confining Pressure and hydration time and the destructive forms of oil shale. At last,the results showed that the hydration taked prominent influence on mechanical properties of oil shale,which made the peak intensity and elastic modulus of oil-shale reduced. At the same time, owing to hydration, oil shale had obvious ductility. In addition,  the comparative  analysis of confining pressure and hydration showed  that the strength of oil shale influenced by hydration was smaller than natural state under certain confining pressure. Because of different fracture development in oil shale in-situe, oil-shale after hydration presented different destructive forms.

Key words: oil shale, mechanical properties, triaxial compression, hydration

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