塑性混凝土地连墙质量检测分析

Analysis on the quality test of plastic concrete diaphragm wall

为保证塑性混凝土地连墙的施工质量,发挥其应有的设计功能,对其质量的检测是十分必要的,而传统的钻孔、开挖、围井等方法,不但破坏墙体影响其功能的正常发挥,而且费时费力,局限性很大,利用地球物理探测技术对其进行无损检测取得了较好的应用效果,必将成为工程质量检查的发展方向。探地雷达法是地球物理探测技术之一,它利用人工电磁场测量,求取地下介质电性参数的分布规律,进而达到解决工程建设中的有关问题,现已在许多领域得到应用,并取得了良好的应用效果。文中介绍了探地雷达法的基本原理、测试技术及资料处理和成果分析等。

It is necessary for quality test of plastic concrete diaphragm wall in order to ensure the construction quality, come into play its designed functions. The traditional methods such as coring, digging, well enclosing etc. are not only destroy the concrete diaphragm wall but also time consuming, laborious and limited. The nondestructive testing method of geophysical prospecting technique has achieved good results and will be the development direction of project quality inspection. Ground penetrating radar （GPR） is one technique of geophysical prospecting which could obtain the electrical parameter distribution of the ground by surveying of man-made electromagnetic signals and then to solve the problems in construction. It has been used widely and good application effect is achieved in many fields. This paper introduces the principle, measuring technique, data processing and result analysis method of GPR.