Volume 47 Issue 4
Aug.  2019
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YUAN Chao, ZHANG Huimei, MENG Xiangzhen, YANG Gengshe, WU Luyuan. Influence of internal friction angle on damage constitutive model of freeze-thaw rock[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(4): 138-143. DOI: 10.3969/j.issn.1001-1986.2019.04.021
Citation: YUAN Chao, ZHANG Huimei, MENG Xiangzhen, YANG Gengshe, WU Luyuan. Influence of internal friction angle on damage constitutive model of freeze-thaw rock[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(4): 138-143. DOI: 10.3969/j.issn.1001-1986.2019.04.021
shu

Influence of internal friction angle on damage constitutive model of freeze-thaw rock

  • 1. College of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, China;

  • 2. Department of Mechanics, Xi'an University of Science and Technology, Xi'an 710054, China;

  • 3. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China

Funds: 

National Natural Science Foundation of China(11172232,51774231,11872299,41772333)

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  • Received Date: January 21, 2019
  • Published Date: August 24, 2019
    Graphical Abstract
    • Abstract
  • Based on Weibull random distribution and damage mechanics theory, starting from the characteristics of rock deformation process, the Drucker-Prager criterion was used to establish a damage constitutive model that can reflect the characteristics of rock various deformation stages. Through the conventional triaxial compression test of frozen-thawed sandstone, the Mohr stress circle was used to obtain the cohesion and internal friction angle of the sandstone under different freeze-thaw cycles. The model theoretical curve and the test curve of freeze-thaw sandstone were compared to verify the model rationality. By varying the internal friction angle, whether the friction angle has an effect on the model was analyzed. The results showed that the theoretical curve obtained by the Drucker-Prager criterion agreed well with the experimental curve, which verified the rationality of the model. The internal friction angle had big influence on the distribution variable and was linear, but had no effect on the damage constitutive model or had little effect. The research results have a good reference value for the establishment of rock constitutive relations.
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    • References (13)
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