物探技术在南水北调下穿北京五棵松地铁工程中的试验研究

Testing study of geophysical prospecting for underpass project of South-to-North Water Transfer Project to Beijing Wukesong subway

本文通过对满足工程区地球物理勘探前提的各种物探技术方法进行试验研究,最终采用高密度地震映象法和多道瞬态面波法相结合的综合物探勘察手段,准确圈定了钢板桩的分布范围,同时也查清了工区回填土的分布情况和回填料的密实程度,为设计方案的优选提供了科学依据,解决了在北京城区交通主干道等高干扰的复杂环境下进行工程勘察的难题,为物探技术的应用开拓了新的领域。

In this paper,testing studies of a variety of geophysical methods satisfying the requirements of geophysical exploration project area are completed.The combination of high-density seismic imaging method and multi-channel transient surface wave method is used ultimately.The method can be used to locate accurately the distribution of steel sheet pile.It can also be used to locate the distribution of backfill and confirm the packing density of backfill for providing the design of programs with a scientific basis,solving the reconnaissance problem under the complex environment with high interference in main road of Beijing.The new application of geophysical method is also developed.