| 低速夹层上瑞雷波频散曲线快速稳定反演算法 |
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| 引用本文： | 宋先海,肖柏勋,赵凌,张学强,邓世坤,朱培民.低速夹层上瑞雷波频散曲线快速稳定反演算法[J].勘察科学技术,2003(6):30-34. |
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| 作者姓名： | 宋先海 肖柏勋 赵凌 张学强 邓世坤 朱培民 |
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| 作者单位： | 1. 长江工程地球物理勘测研究院,武汉市,430010
2. 中国地质大学应用地球物理系,武汉市,430074 |
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| 基金项目： | “九·五”国家重点科技攻关项目 (No .96-2 2 1-0 1-0 2-0 5 )，长江水利委员会综合勘测局科技发展基金资助项目 (No .KY2 0 0 0 -4 ) |
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| 摘 要： | 该文提出了TDWLSA反演算法 ,有效地解决了对初始模型的选取。等厚薄层的应用 ,提高了横波速度的反演精度 ,引入权重矩阵提高数据分辨率 ,采用自适应修改阻尼因子提高迭代效果并协调分辨率与解的关系。实测资料试算结果表明 ,用该算法对低速软弱夹层瞬态瑞雷波频散曲线进行反演 ,不但具有稳定性好、精度高、分辨能力强的特点 ,而且能自动分层和反演地层参数。
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| 关 键 词： | TDWLSA 低速软弱夹层 瞬态瑞雷波 频散曲线 横波速度 |
| 修稿时间： | 2003年7月31日 |
Fast and Reliable Method for Inversion of Rayleigh Wave Dispersion Curves for Lower Velocity Layers |
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| Song Xianhai,Xiao Boxun,Zhao Ling,Zhang Xueqiang,Deng Shikun,Zhu Peimin.Fast and Reliable Method for Inversion of Rayleigh Wave Dispersion Curves for Lower Velocity Layers[J].Site Investigation Science and Technology,2003(6):30-34. |
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| Authors: | Song Xianhai Xiao Boxun Zhao Ling Zhang Xueqiang Deng Shikun Zhu Peimin |
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| Affiliation: | Song Xianhai 1 Xiao Boxun 1 Zhao Ling 1 Zhang Xueqiang 2 Deng Shikun 2 Zhu Peimin 2 |
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| Abstract: | Thinned Damped Weighted Least Square Algorithm is used to invert transient Rayleigh wave dispersion curves for lower velocity layers. The new efficient algorithm can overcome such serious shortcomings as the strict dependence on initial model,improve shear wave accuracy and resolution using thinned layers and weighted matrix and enhance iterative effect and adjust the relationship between resolution and solution by self-adaptation iterative damped factor. Inversion results of field data indicate that TDWLSA is characterized by good stability, high accuracy and strong resolution, and also automatically invert shear wave velocity and thickness. |
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| Keywords: | Thinned Damped Weighted Least Square Algorithm lower velocity layers transient Rayleigh wave dispersion curves shear wave velocity |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
