›› 2008, Vol. 29 ›› Issue (11): 3124-3127.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Measure model -Ⅰ crack stress intensity factor of rock-mass via laser holographic interferometry

HU Xiu-hong1, WU Fa-quan1, LIU Hai-yan2   

  1. 1. Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 2. College of Geosciences and technology, Shandong University of Science and Technology, Qingdao 266510, China
  • Received:2007-03-22 Online:2008-11-10 Published:2013-08-07

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Abstract: The model?Ⅰcrack stress intensity factor KⅠ is an important property of rock mass. Before obtaining KⅠ, we should figure the crack geometric impact factor out. According to “modified Feddersen” formula, we argue experimental model and engineering rock mass could share the same . Based on the double exposing holographic interferometry theory, the equations of crack tip stress field, the photoelastic stress-lit law on plane, the standard processing method, a technical line, which could be used to measure model-Ⅰcrack stress intensity factor KⅠof rock mass, is thought out. The method has some special advantages, such as higher precision and more clearly interference fringes.

Key words: holographic interferometry, stress intensity factor, geometric impact factor, engineering rock mass

CLC Number: 

  • TB 877
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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