瞬态瑞雷面波技术在人工填土勘察中的应用

Application of multi-channel transient Rayleigh wave technique in artificial fill investigation

查明场地内人工填土的分布范围与厚度是岩土工程勘察工作的一项基本内容。尤其是市政工程,如顶管工程、道路工程等,填土勘察的准确性直接影响到设计方案的选取。本文以滨海新区南港工业区某管道穿越工程为例,开展了多道瞬态面波测试技术在人工填土勘察中的应用,根据瞬态面波测试结果结合少量钻孔资料,较为准确地查明了场地范围内填土的分布及厚度,为施工方案设计以及管道穿越深度的确定提供了重要参考资料,取得了较好的工程效果。

Finding out the distribution and thickness of artificial fill is one of the basic works in geotechnical engineering investigation. The investigation accuracy of artificial fill will affect the success of design scheme directly, especially in pipe jacking engineering and road engineering. The multi-channel transient Rayleigh wave technique is applied to the artificial fill investigation in a pipeline crossing project in the south port industrial area, which is belong to the new Coastal region of Tianjin. According to the Rayleigh wave test results, the artificial fill thickness is found out accurately combined with a few borehole data, which provides important references for the construction scheme and the determination of the pipeline crossing depth. It proves that the investigation achieves good engineering effect.