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Application of Drilling Comprehensive Test in Determining Rock Mass Integrity Degree

YANG Jianming;MA Xiaobo;Sichuan Hydropower Engineering Investigation Co., Ltd.;Chengdu University of Technology;  
After making an analysis on the panoramic image data collected by drillings, the distinction between different structural planes and fractures in rock mass can be identified and the occurrence and development degrees of fractures can also be determined. Combining with acoustic wave velocity test data and contrasting the statistics of fractures in panoramic image and acoustic wave velocities, the interference of unloading and mechanical disturbance caused by the process of excavation and drilling can be better ruled out. Therefore, the true reflection of geological condition of surrounding rocks can be obtained.
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