Polarization Migration of Multi-component Seismic Data for Survey in the Tunnel of Mountain Cities
Polarization Migration of Multi-component Seismic Data for Survey in the Tunnel of Mountain Cities
复制标题
山地城市隧道勘测多分量地震资料偏振偏移
DOI：
10.2113/jeeg24.04.569
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发表时间：
2019-12
影响因子：
1
通讯作者：
Heng Zhang
中科院分区：
文献类型：
--
作者：
Bo Wang;Lanying Huang;Shengdong Liu;Fubao Zhou;Biao Jin;Huachao Sun;Heng Zhang
随着中国西部交通的发展，山区城市隧道建设变得非常重要和普遍。隧道施工安全通常受断层控制，利用地震探测方法超前预报断层已成为工程地球物理领域的研究热点。与地面地震勘探不同的是，由于隧道探测空间的限制，震源和接收器的布置不合理，从而导致在高级偏移成像过程中出现偏移伪影问题。这个问题导致对断层的成像不准确。针对这一问题，本文提出了一种新的偏振偏移方法。该方法利用了三分量地震信号的偏振特性。通过希尔伯特变换和复协方差矩阵分析计算了主极化方向。在偏移计算中引入了主偏振方向因子的加权函数。为了验证偏振偏移方法的有效性，本文进行了数值模拟。测试结果表明，极化偏移消除了伪影，准确计算了断层的产状参数，如倾角、走向等。现场检测实例表明，基于偏振偏移的地震超前预报提供了100m的隧道工作面前方断层参数，距离误差小于2m，倾角误差小于3°，保证了隧道施工的高效安全。
With the development of transportation in the west of China, tunnel construction in mountain cities is becoming very important and widespread. Tunneling safety in the tunnels is usually controlled by faults, and the advanced prediction of faults by seismic detection method has become a research hotspot in the field of engineering geophysics. Unlike seismic exploration on the ground, the sources and receivers are not properly arranged due to the limitation of the tunnel detection space, so as to cause migration artifacts problem in the process of advanced migration imaging. The problem results in inaccurate imaging of the faults. To solve the problem, this paper proposed a new polarization migration method. The method makes use of the polarization characteristic of three-component seismic signals. The principal polarization direction is calculated by Hilbert transform and complex covariance matrix analysis. A weighted function of the principal polarization direction factor is incorporated into the migration calculation. To verify the effectiveness of the polarization migration method, this paper carries out numerical simulations. Test results demonstrate that the artifacts are eliminated by the polarization migration, and occurrence parameters of faults, such as dip and trend are calculated accurately. The field detection case shows that seismic advanced prediction which is based on polarization migration provided parameters of faults in the front of the tunnel face with 100m, and the distance error is less than 2m, and the dip error is less than 3°, which ensures efficient and safe construction of tunneling.
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影响因子：
2
作者：
Liu, Jiangping;Qu, Niannian;Mao, Mao;Zhou, Liming
通讯作者：
Zhou, Liming
DOI：
10.1080/19648189.2016.1170731
发表时间：
2016-04
影响因子：
2.1
作者：
Shucai Li;Jie Song;Jianqing Zhang;Chuanwu Wang;B. Liu;Fangwen Liu;Shengming Ma;L. Nie
通讯作者：
Shucai Li;Jie Song;Jianqing Zhang;Chuanwu Wang;B. Liu;Fangwen Liu;Shengming Ma;L. Nie
影响因子：
0.9
作者：
Bo Wang;Shengdong Liu;Fubao Zhou;Jun Zhang;Fangkun Zheng
通讯作者：
Fangkun Zheng
DOI：
--
发表时间：
2014
期刊：
Chinese journal of rock mechanics and engineering
影响因子：
--
作者：
Li Shuca
通讯作者：
Li Shuca
影响因子：
6.1
作者：
J. Doolittle;B. Jenkinson;D. Hopkins;Michael Ulmer;W. Tuttle
通讯作者：
J. Doolittle;B. Jenkinson;D. Hopkins;Michael Ulmer;W. Tuttle