VARIATION OF DISPLACEMENT FIELD AND DAMAGE EVOLUTION OF ROCK WITH HORIZONTAL JOINT UNDER WEDGE INDENTER
(State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,
Chinese Academy of Sciences,Wuhan,Hubei 430071,China)
Abstract:In order to study the influence of horizontal joint on the rock fragmentation when disc cutter penetrate rock,the wedge indentation penetration experiments of similar material are carried out under simplified actual conditions using improved experimental device. The digital image of the deformation and failure process of specimen surface are obtained in real-time by using charge coupled device(CCD) camera. Digital speckle correlation method is used to analyze the collected images and the displacement field of the specimen surface. The damage of specimen under concentrated load by wedge indenter is expressed by the variance of the displacement field. Acoustic emission testing system digital signal processing(DISP) is applied to get the localization of micro-fracture failure on specimen surface,and analyze the formation mechanism and the characteristics of acoustic emission(AE) concentrated in space when the specimen with horizontal joint.
邹 飞,李海波,周青春,朱小明,莫振泽,郝亚飞. 楔刀作用下含水平节理岩体的位移场特征及损伤演化试验研究[J]. 岩石力学与工程学报, 2011, 30(5): 982-990.
ZOU Fei,LI Haibo,ZHOU Qingchun,ZHU Xiaoming,MO Zhenze,HAO Yafei. VARIATION OF DISPLACEMENT FIELD AND DAMAGE EVOLUTION OF ROCK WITH HORIZONTAL JOINT UNDER WEDGE INDENTER. , 2011, 30(5): 982-990.
钱七虎,李朝甫,傅德明. 全断面掘进机在中国地下工程中的应用现状及前景展望[J]. 建筑机械,2002,(5):28-35.(QIAN Qihu,LI Chaofu,FU Deming. Application situation and outlook of TBM in underground project in China[J]. Construction Machinery,2002,(5):28-35.(in Chinese))
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