| 联合速度建模及其在反射波法隧道超前预报中的应用 |
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| 引用本文： | 巩向博,韩立国,牛建军,张晓培,王德利,杜立志.联合速度建模及其在反射波法隧道超前预报中的应用[J].应用地球物理,2010,7(3):265-271. |
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| 作者姓名： | 巩向博 韩立国 牛建军 张晓培 王德利 杜立志 |
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| 作者单位： | |
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| 基金项目： | This work is sponsored by Nation 973 Program，Nation 863 projection，Nation 863 Program，Young Teachers Innovation Fund of Jilin University，Graduate Innovation Fund of Jilin University |
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| 摘 要： |
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Combined migration velocity model-building and its application in tunnel seismic prediction |
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| Xiang-Bo Gong,Li-Guo Han,Jian-Jun Niu,Xiao-Pei Zhang,De-Li Wang,Li-Zhi Du.Combined migration velocity model-building and its application in tunnel seismic prediction[J].Applied Geophysics,2010,7(3):265-271. |
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| Authors: | Xiang-Bo Gong Li-Guo Han Jian-Jun Niu Xiao-Pei Zhang De-Li Wang Li-Zhi Du |
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| Institution: | 1.College of Geo-Exploration Science and Technology,Jilin University,Changchun,China;2.College of Construction Engineering,Jilin University,Changchun,China |
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| Abstract: | We propose a combined migration velocity analysis and imaging method based on Kirchhoff integral migration and reverse time
migration, using the residual curvature analysis and layer stripping strategy to build the velocity model. This method improves
the image resolution of Kirchhoff integral migration and reduces the computations of the reverse time migration. It combines
the advantages of efficiency and accuracy of the two migration methods. Its application in tunnel seismic prediction shows
good results. Numerical experiments show that the imaging results of reverse time migration are better than the imaging results
of Kirchhoff integral migration in many aspects of tunnel prediction. Field data show that this method has efficient computations
and can establish a reasonable velocity model and a high quality imaging section. Combination with geological information
can make an accurate prediction of the front of the tunnel geological structure. |
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