MA Shao-peng, WANG Lai-gui, ZHAO Yong-hong. Experimental study on deformation field evolution during failure procedure of a rock borehole structure[J]. 2006, 27(7期 刊出日).
MA Shao-peng, WANG Lai-gui, ZHAO Yong-hong. Experimental study on deformation field evolution during failure procedure of a rock borehole structure[J]. 2006, 27(7期 刊出日).DOI:
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.