| 基于瑞雷面波频散曲线反演的岩体力学参数求取方法 |
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| 引用本文： | 潘自强,徐贵来,吴曲波.基于瑞雷面波频散曲线反演的岩体力学参数求取方法[J].国外铀金地质,2012(2):106-109. |
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| 作者姓名： | 潘自强 徐贵来 吴曲波 |
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| 作者单位： | 核工业北京地质研究院,中核集团铀资源勘查与评价技术重点实验室,北京100029 |
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| 摘 要： | 岩体力学参数是岩土工程中表征岩体力学性质的重要参数，应用二维傅里叶变换获得高信噪比的频散曲线，采用阻尼最小二乘法自动反演横波速度，进而计算岩体力学参数。结合内蒙古二连盆地瑞雷面波勘探实例，得到了动态岩体力学参数剖面，且在采集和处理参数选取合理的情况下，最大勘探深度可达120m。相比于其他岩体力学参数测试技术，瑞雷面波法具有快速、高效、经济、无榀的特点．
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| 关 键 词： | 频散曲线 阻尼最小二乘法 岩体力学参数 |
Calculating rock mechanics parameters based on the inversion of Rayleigh wave dispersion curves |
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| Authors: | PAN Zi-qiang XU Gui-lai WU Qu-bo |
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| Institution: | (CNNC Key Laboratory of Uranium Resources Exploration and Evaluation Technology, Beijing Research Institute of Uranium Geology, Beijing 100029, China) |
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| Abstract: | In geotechnical engineering, rock mechanics parameters are the important values which characterize rock mechanics property. In this paper, 2D Fourier transform is used to extract high signal-to-noise ratio dispersion curves, damped least square method is applied to inversely derive the S-wave velocity automatically so as to calculate rock mechanics parameters. Data of Rayleigh wave exploration in Erlian Basin of Inner Mongolia is used as an example to obtain profiles of dynamic rock mechanics parameters. It was found that the maximum exploration depth can reach 120 m provided that the acquisition and processing parameters are reasonable. Compared with other rock mechanics parameters testing technique, the characteristics of Rayleigh wave exploration are fast, efficient, economical and nondestructive. |
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| Keywords: | dispersion curves damped least square method rock mechanics parameters |
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