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《Chinese Journal of Underground Space and Engineering》 2009-06
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Modeling and Recognition of GPR Image of Unfavorable Geology

ZHOU Qi-cai~1,FENG Shuang-chang~1,LI Bing-jie~1,HE Zi-qiang~2,ZHANG Heng~2 (1.School of Mechanical Engineering,Tongji University,Shanghai 201804; 2.Shanghai Metro Shield Machine Equipment & Engineering Co.,Ltd,Shanghai 200000)  
Unfavorable geology such as underground cavity,underground river and building piles are often encountered during the construction of subway tunnel,which not only affects the quality of construction,but presents significant and potential dangers.In that case,it is necessary to carry out advanced exploration and prediction of geology for tunnel excavation of the shield driving face.In this paper,FDTD(Finite - different time - domain) and soft ware of CPRmax2D for radar image simulation were adopted to proceed with numerical simulation for unfavorable geology that may be encountered when the ground penetrating radar on shield driving face is exploring,and to carry out feature analysis and regularity summarization for the image.Finally,IDS - K2 radar was utilized to analyze the typical underground cavity and blister,and valuable conclusion was deduced which provides advanced geology exploration of shield construction with image reference and basis.
【Fund】: 上海市协助项目(04-2185-1000);; 校企合作项目(09-0984-1000)资助
【CateGory Index】: TN959
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