高铁隧道结构内部病害瞬变电磁快速探测方法研究

Despite the fast detecting method of tunnel structure surface diseases has been mature, but the fast detecting method of tunnel structure internal diseases is still a has not been very good to solve problems. Therefore, this study put forward the application of the transient electromagnetic method considering tunnel whole space transient electromagnetic characteristics of the near-field effect, the fast detecting method to carry out the research on tunnel structure internal diseases, mainly studies on the following questions: (1) Antenna form, arrangement and the best parameters; (2) The influence law of train detecting speed, transmit-receive frequency of antenna and near-field blind area interference sources on the detection accuracy; (3) The fast block collecting, positioning and merging methods; (4) Mathematical filtering and fast inversion method; (5) Establishing intelligent database to form an intelligent evaluation system of the inversion results. This study first proposes a new type of the fast detecting method for the internal diseases of tunnel structure, which provides a new technical means and supports for tunnel structure maintenance.

尽管隧道结构表面病害的快速探测方法已经趋于成熟，但是隧道结构内部病害的快速探测方法还是一个尚未得到很好解决的难题。为此，本研究提出应用列车瞬变电磁法，考虑隧道全空间瞬变电磁"近场"效应特征，对隧道结构内部病害快速探测方法开展研究，主要对以下问题开展研究： (1) 天线形式、布置及最佳参数； (2) 列车探测速度、天线发接频率和近场盲区干扰源影响探测精度的规律； (3) 快速分块采集、定位和合并方法； (4) 数学滤波和快速反演方法； (5) 建立智能数据库，形成反演结果的智能评价体系。 本研究首次提出了一种新型的隧道结构内部病害快速探测方法，为隧道结构维护提供了新的技术手段和保障。

尽管隧道结构表面病害的快速探测方法已经趋于成熟，但是隧道结构内部病害的快速探测方法还是一个尚未得到很好解决的难题。为此，本研究提出应用列车瞬变电磁法，考虑隧道全空间瞬变电磁近距离效应特征，对隧道结构内部病害快速检测方法开展研究，主要对以下问题开展研究：.1，天线形式，布置和最佳参数；.2，列车探测速度，天线接发频率和近距离盲区干扰源影响探测精度的规律；.3，快速分块采集，定位和合并方法；.4，数学滤波和快速反演方法；.5，建立智能数据库，形成反演结果的智能评价体系。