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肇庆大桥位于西江流域，是连接肇庆和珠江三角洲地区的主要干线上的大桥。5个主桥墩位于溶洞和断层破碎带上，以往常用的单桩单孔的方法只能查明10cm直径垂直下方的溶洞分布情况，这种常规的方法难于查明整个桥墩位下方的溶洞分布情况，而且一孔之见难于达到技术要求。近年来发展起来的CT成像技术，正好可以弥补这方面的不足。本次电磁波CT探测法在肇庆大桥5个主桥墩的溶洞探测结果说明，这种方法是可行的，溶洞探测结果还经过最后的钻桩验证。
Zhaoqing Bridge is located in the Xijiang River Basin, is the bridge connecting Zhaoqing and the Pearl River Delta region on the main route. The five main piers are located in caves and fault zones. The single-hole single-hole method used in the past can only find out the vertical distribution of caves with a diameter of 10 cm. This conventional method is difficult to find out the distribution of cave under the pier , And a hole in opinion difficult to meet the technical requirements. CT imaging technology developed in recent years, just to make up for deficiencies in this area. The electromagnetic wave CT detection method in Zhaoqing Bridge five main piers cave test results show that this method is feasible, the cave probe results also after the final drill pile verification.