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《Chinese Journal of Geophysics》 1994-02
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YANG WEN-CAI(Institute of Geophysical & Geochemical Explorations, Langfang 102849) DU JIAN-YUAN(Beijing Computer Center of MGMR, Beijing 100083)  
Sparse matrix equations are usuallp involved for solutions of tomographic problems when traveltime or amplitude data are used.Orthogonal decomposition algorithms are currently used and have difficulties if the matrixes are badly ill-conditioned. This paper shows an improved algorithm of LSQR with damping iterations. Good results are demonstrated by real examples of detecting quality of bridge beds along the high way to Beijing airport.
【Fund】: 国家自然科学基金委员会、中国科学院、中国石油天然气总公司和大庆石油管理局联合资助
【CateGory Index】: U443.22
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1 LI Cai-ming~1 WANG Liang-shu~1 XU Ming-jie~1 SUN Qing-tong~2 1.Department of Science Earth,Nanjing University,Nanjing 210093.China;2.Zhenyuan Geophysical Survey Co.Ltd.Shandong,Jinan 250014.China;STUDY OF LOAD-BEARING STRATUM USING ELECTROMAGNETIC WAVE COMPUTERIZED TOMOGRAPHY IN KARST REGIONS[A];[C];2005
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9 SUN Wen-huai1,LIU Wei1,LI Chang-zheng2,3,ZHANG Qing-ming2,3,WANG Rui2,3(1.North China Institute of Water Conservancy and Hydroelectric Power,Zhengzhou 450045,China;2.Yellow River Institute of Hydraulic Research,Zhengzhou 450003,china;3.Engineering Quality Testing Center of Yellow River Conservancy Commission,Zhengzhou 450003,china);The Application of Seismic Wave CT to Quality Testing on Plastic Concrete Cut-off Walls[J];华北水利水电学院学报;2013-01
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3 LI Hao;Methane & Fire Branch,Chongqing Research Institute of China Coal Technology & Engineering Group Corp.;;The application of radio wave tunnel penetration method to evaluating fracturing effect in underground coal mine[J];物探与化探;2017-04
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5 XIAO Yu-lin;WU Rong-xin;YAN Jia-ping;ZHANG Ping-song;School of Earth and Environment,Anhui University of Science and Technology;;Field strength propagation law of radio wave penetration and effective perspective width for coal face[J];煤炭学报;2017-03
6 ZHANG Hui;PAN Dong-ming;LIU Peng;CHEN You-kuo;School of Resources and Earth Sciences,China University of Mining and Technology;;Simulation and analysis of the influence of initial field intensity on the inversion results[J];地球物理学进展;2016-06
7 Zou Weibo;Chen Shuping;Du Yongli;He Xianqi;Peng Lingxing;Zhu Ziqiang;Hunan Ma'an Expressway Construction and Development Co.,Ltd.;Hunan Provincial Communications Planning,Survey & Design Institute;School of Geosciences and Info-physics,Central South University;;The Application of Ultrasonic Plane Testing Method to Crack Depth Inspection of Tunnel Lining[J];工程地球物理学报;2016-06
8 Zhu Yanmei;Fan Minjin;Sha Chun;Sichuan Hydropower Engineering Investigation Co.,Ltd.;;The Study on Accuracy Effects of Ultrasonic S-wave 3D Imaging Method to Detect Defects of Concrete[J];工程地球物理学报;2016-06
9 Huang Oulong;Cao Guohou;Su Jiankun;Li Wanbao;Second Engineering Institute of Scientific Research and Engineering Design,South Military Area Ground Force;Yunnan Aerospace Engineering Geophysical Limited by Share Ltd;;The Application of Sonic Computed Tomography to Mass Concrete Detection of Cable-stayed Bridge[J];工程地球物理学报;2016-06
10 Sun Zonglong;Pan Shihai;Cui Hengzhe;Geological Exploration Technologies Institute of Anhui Province;Sanya Construction Engineering Quality and Inspection Center;;The Application of Comprehensive Geophysical Prospecting Method to the Investigation of Air-raid Shelter[J];工程地球物理学报;2016-05
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