管道淤积是造成城市内涝问题频发的重要因素。针对现阶段广泛采用的人工检测或单一仪器检测技术的不足，探讨了管道声纳检测系统（X4）、探地雷达（加拿大EKKO）和管道内窥仪（CCTV）联合检测技术的运用，并进行了实际管道淤积测试试验。试验结果表明：与传统单一检测方法相比，在无检修井且无法进行人工检测的排水管道淤积检测中，联合检测方法应用效果显著，具有无损、检测速度快以及结果可靠等优点。为今后水务管道淤积检测工程的技术选用提供了新的检测方法。

The accumulation of silt in pipelines is an important factor that causes frequent problems in urban areas. This article addresses the deficiencies of manual detection or single instrument detection technique that is widely used at the present stage, explores the combined use of pipeline sonar detection system (X4), ground penetrating radar (Canada EKKO) and pipe endoscopy (CCTV), and carries out the actual pipeline test. The experimental results of the pipeline deposition test show that the combined detection method has a significant effect as compared with the traditional single detection method while with no inspection wells and with difficulty in performing artificial detection of the accumulation of drainage in pipelines. It is of a nondestructive detection and has rapid detection speed and the advantages of reliable results. It will provide a new detection method for the selection of technology for water pipeline silt detection in the future.