[1]HU Yi-li,XU Jun,XU Zhao-yong,et al.Experimental Study of the Characteristics of Deformation and Fracture of Rock Block with Various Structure of the Fault[J].Journal of Seismological Research,2010,33(03):320-328.
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Experimental Study of the Characteristics of Deformation and Fracture of Rock Block with Various Structure of the Fault
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
33
Number of periods:
2010 03
Page number:
320-328
Column:
Public date:
2010-03-01
- Title:
- Experimental Study of the Characteristics of Deformation and Fracture of Rock Block with Various Structure of the Fault
- Keywords:
- prefabricated cracks; various structure of fault; laser holometry; rock block; strain; micro-crack analysis
- CLC:
- P315.8
- DOI:
- -
- Abstract:
- V-shaped block boundaries consisting of en echelon faults(slots or prefabricated cracks)were cut in a coarse-grained granite board.The slots were filled with gypsum.According to the structural characteristics,the board was divided into three zones:Zone A(where the faults converge),Zone B(where the faults form left-lateral and left-stepping rock bridges),and Zone C(where the faults form right-lateral and left-stepping rock bridges).An observational study was made by means of biaxial loading,fixed-point strain measurement,AE information system,and real-time holometry(laser).Results are as the following:All extra-fractures emerge in various structural zones during process of preparing failure of the sample.Before extra-fracturing,the variation characteristics such as the strains at measuring points increased with the increase of stress,message of AE events and fringes are observed by real-time holometry.Extra-fractures occurred in order,and the precursors of the extra-fractures emerged in order too.The three zones had their own characteristics with regard to the fracturing.Some precursors emerge alternately in various zones.When examined from the structural characteristics,it can be seen that the three zones are places where different structures meet and therefore are sensitive sections for events to occur.This has led to different orders of fracture or even resulted in different precursors.
- References:
- -
- Similar References:
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Last Update:
2010-03-23