STRUCTURAL HIERARCHY AND MECHANICAL PROPERTIES OF ROCK MASS.Part I:STRUCTURAL HIERARCHY AND STRENGTH OF ROCK MASS

【Author】

Chengzhi Qi~*,Beijing Institute of Civil Engineering and Architecture,China Mingyang Wang,Nanjing Engineering Institute,China Qihu Qian,Chinese Academy of Engineering,China Jianjie Chen,Nanjing Engineering Institute,China

【Abstract】

<正>Rock mass has a complex structural hierarchy,which affects the physical-mechanical properties of rock mass very much.In this paper the relationship between viscosity and structural hierarchy is studied.The study shows that different structural levels correspond to different viscosity and characteristic strain rate.High viscosity and low strain rate correspond to macro-level,and meso- and micro-levels are characterized by low viscosity and high strain rate.Generally,with the increase of external actions,the strain rate grows also.Consequently,deformation and fracture gradually cover meso-and micro-levels,and viscosity gradually decreases.At high strain rate,viscosity is inversely proportional to strain rate.On the basis of analysis of viscosity at different structural levels,asymptotic intermediate approximation of viscosity at different levels is suggested.The approximation formulae transform to that at continental structural level and micro-level in the limit cases.This suggests that the approximation is adequate for the description of viscosity at different structural levels.

【Keywords】

structural hierarchy;;viscosity;;relaxation;;dynamic strength

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Total: 35 articles

  • [1] Qi Chengzhi1, Qian Qihu2 (1Department of Civil Engineering,Beijing Institute of Civil Engineering and Architecture, Beijing 100044 China) (2Division of Civil Engineering,Hydraulic Engineering and Architecture,Chinese Engineering Academy, Beijing 100038 China), PHYSICAL MECHANISM OF DEPENDENCE OF MATERIAL STRENGTH ON STRAIN RATE FOR ROCK-LIKE MATERIAL, Chinese Journal of Rock Mechanics and Engineering,
  • [2] QI Cheng-zhi1,QIAN Qi-hu2,WANG Ming-yang2,DONG Jun1(1.Department of Civil Engineering,Beijing Institute of Civil Engineering and Architecture,Beijing 100044,China;2.PLA University of Science and Technology,Nanjing 210007,China), STRUCTURAL HIERARCHY OF ROCK MASSIF AND MECHANISM OF ITS FORMATION, Chinese Journal of Rock Mechanics and Engineering,
  • [3] Yu.I. Mescheryakov;;A.K. Divakov;;N.I. Zhigacheva, Shock-induced phase transformation and vortex instabilities in shock loaded titanium alloys, Shock Waves,
  • [4] Savenkov G.G;Mescheryakov Ju.I, Structural viscosity of solids, Physics of Combustion and Explosion,

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