论文部分内容阅读
瞬态多道面波勘察技术,已在岩土工程测试领域得到了广泛应用。目前,其数据采集与处理多基于单排列共炮点(CSP)的多道面波模式进行,在面波相速度频散曲线的求取中依据的主要是共炮点多道解析法。本文结合国内外同行开展多道面波法的最新研究成果,介绍了应用类似地震反射多次覆盖叠加的技术原理,在多道面波法的数据采集与处理中拓展为基于共中心点(CMP)的解析模式,探讨了其解析原理及反演过程,并分析了CMP解析法的场地试验及工程实例。最后,文章得出采用CDP叠加法的多道面波勘察数据,应用CMP解析法可以进一步提高空间分辨率的研究结论。
Transient multi-surface wave survey technology has been widely used in geotechnical test field. At present, the data acquisition and processing are mostly based on the multi-surface wave mode of single-array common-shot (CSP). The predominance of common-shot multi-channel analysis is mainly based on the calculation of surface wave velocity dispersion curve. In this paper, based on the latest research achievements of multichannel surface wave method at home and abroad, this paper introduces the principle of applying similar seismic reflection overlay overlay, and expands the data collection and processing of multichannel surface wave method ) Analytical model, discussed its analytical principle and the inversion process, and analyzed the CMP site analysis and engineering examples. Finally, the article obtains multi-surface wave reconnaissance data using CDP superposition method, and applying CMP analysis method can further improve the research conclusion of spatial resolution.