堤防CT成像的数值模拟研究  

Study of Numerical Simulation on Embankment Tomography

作　　者：潘纪顺 刘宇锋 李长征[2] 杨磊[2] PAN Jishun;LIU Yufeng;LI Changzheng;YANG Lei(College of Geosciences and Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China)

机构地区：[1]华北水利水电大学地球科学与工程学院,河南郑州450046 [2]黄河水利科学研究院,河南郑州450003

出　　处：《人民黄河》2021年第3期47-51,共5页Yellow River

基　　金：国家重点研发计划项目(2017YFC1501204-03,2017YFC0405104);国家自然科学基金资助项目(41774066)。

摘　　要：简述以射线理论为基础的地震CT的基本原理、数学方法、图像重构技术、ART算法和SIRT算法,在现有井间地震CT的基础上研究堤防CT,利用MATLAB编程对堤防进行地震断面CT的数值模拟,通过ART和SIRT重建方法进行反演,分析得出二者在堤防CT应用中的优缺点及适用条件。结果表明:ART算法和SIRT算法都得出了较好的反演结果,提高了探测效率和精度,较好地验证了堤防CT成像技术的正确性和可行性。The basic principle,mathematical method,image reconstruction technology,ART algorithm and SIRT algorithm of seismic CT based on ray theory were briefly introduced.Based on the existing cross well CT,the embankment CT was studied and the seismic crosssection CT numerical simulation was carried out by MATLAB programming.The advantages and disadvantages of ART and SIRT reconstruction methods in the application of embankment CT were analyzed.Finally,good inversion results were obtained,which improved the accuracy and verified the correctness and feasibility of embankment CT imaging technology.

关 键 词：堤防 地震CT ART算法 SIRT算法 

分 类 号：TV82[水利工程—水利水电工程]