›› 2006, Vol. 27 ›› Issue (7): 1082-1086.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study on deformation field evolution during failure procedure of a rock borehole structure

MA Shao-peng1,2, WANG Lai-gui3, ZHAO Yong-hong4   

  1. 1.Key Laboratory of Rock and Soil Mechanics, Chinese Academy of Sciences,Wuhan 430071, China; 2. Departmaent of Mechanics, School of Science, Beijing Institute of Technology, Beijing, 100083, China; 3.Department of Mechanics and Engineering Sciences, Liaoning Technical University, Fuxin 123000, China; 4. Department of Geophysics, Peking University, Beijing 100871, China
  • Received:2004-10-08 Online:2006-07-10 Published:2013-11-19

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Abstract: The failure procedure of a rock borehole structure is experimentally studied using a specially designed deformation field inspection system (Geo-DSCM system). The borehole specimen, which is manufactured by drilling a hole at the center of a marble plate, is uniaxially compressed to failure with the speed of 0.02 mm/min. Deformation fields through all the loading procedure are inspected and analyzed. It is shown that the deformation field localizes on the sections in tension at the early stage of loading.. While when specimen is loaded almost to the peak of loading curve, two new X-shaped localization bands, which are at angle from the loading direction, occurred. Finally only one localization band maintained and formed the macro fracture that failed the structure.

Key words: borehole structure, digital speckle correlation method (DSCM), deformation localization, deformation field, failure

CLC Number: 

  • TU 452
  • 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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