堤坝防渗墙缺陷CSAMT响应的三维模拟与“■”剖面资料处理

3D SIMULATING FOR CSAMT RESPONSE OF THE SEEPAGE PROOF WALL DEFECTS AND DATA PROCESSING USING “■” PROFILE METHOD

在防渗墙质量无损检测工作中,应用CSAMT法开展检测工作取得了较好的效果,也引起较多同行的质疑。本文针对长江堤防隐蔽工程质量无损检测工作中的实际问题,设计两种实际情况的理论模型,详细描述了模型网格剖分的原则,通过三维模拟计算说明CSAMT法开展堤防隐蔽工程(防渗墙)质量无损检测工作的可行性。简要介绍了“K”剖面法的基本原理,并通过对三维模拟数据的处理说明应用“-K”剖面法对CSAMT法反演数据进行再处理的正确性和必要性。

Although the applications of CSAMT methods to the non--destructive inspection of seepage proof walls have achieved a great success, it can not be accepted by some people yet. This paper presented a 3--D simulation of two theoretical models, which were designed according to the real situation of the seepage proof walls along the Yangtse Rive dikes. The results of the modeling undoubtedly established CSAMT method as a viable and feasible investigative tool for evaluating the condition of the seepage proof wall. The paper still presented the basic theory about ＂K^-＂ profile method and used it for reprocessing the inversed data. The ultimate results indicate the validity and necessity of using this technique.