堤防隐患时移高密度电法探测技术探究

针对堤防隐患的低可探性和汛期转换的时变性,对我国堤防隐患探测技术和仪器的发展现状及特点进行了总结分析,指出当前堤防隐患探测所面临的难题,提出从隐患探测到动态时移、连续、信息化的探测思路。以时移高密度电阻率法为例,从测线布设、工作点距及工作参数等方面研究阵列式空间观测系统,此外还对多通道智能化数据采集工作方式、数据远程网络传输与监控、GPU并行时移反演成像方法等进行了探究。结合实例,对高密度电法时移动态探测思路及方法的有效性、可行性进行了分析,期望实现堤防隐患探测从查找地质缺陷发展到对隐患致灾过程的时移动态追踪、分析与预警。

Research on time-shift high-density electrical method for detecting hidden dangers in dikes

For the low detectability and the time-varying property of dike hidden troubles in flood season, this paper summarizes the current situations and characteristics of the dike hidden troubles detection technologies and instruments, points out the present problems in the dike hidden troubles detection and then puts forward the detection idea from hidden danger detection to dynamic time shift, continuous and information detection. Using time-shift high-density electrical detection as an example, we study the spatial observation system arrangement through the layout of measuring line, point distance and parameters. What’s more, we also study multi-channel intelligent data acquisition mode, data remote transmission and monitoring, GPU parallel time-shift inversion imaging method and so on. Time-shift high-density electrical detection is proven to be effective and feasible by a dike detection example. After this, it is hoped to realize time-dynamic tracing, analyzing and prewarning from geological defect locating to disaster forming.