Design and Implementation of Three-Channel Drainage Pipeline Ground Penetrating Radar Device

Abstract

In order to solve the current problems that conventional video inspection can only detect, as an internal pipeline defect and drainage pipeline radar inspection device detects in a single direction and at radar frequency in water pipeline defect detection, a three-channel drainage pipeline ground penetrating radar (GPR) inspection device was designed and developed, the assembly and commissioning of the device prototype were completed, and an actual engineering test application was carried out. Focusing on the problem that the detection direction and depth of the single-channel detection device are limited, a three-channel drainage pipeline GPR inspection device is designed to realize the synchronous detection of the inside of the pipeline, the pipeline body, and the external environment of the pipeline, improving the detection depth and efficiency. According to the design scheme of the three-channel drainage pipeline GPR inspection device, the assembly of the device prototype was completed. The device contains three radar channels, the top of the main frequency of the antenna is 1.4 GHz, the two sides are 750 MHz, the video camera has a pixel count of 4 million, and the positioning accuracy is less than 1 mm, the waterproof grade is IP68, the detection accuracy of pipe deformation (slope) is 0.1°, the detection depth outside the pipe is 1.2 m, and the detection accuracy of corrosion thickness is 15 mm. In a practical application of the device, the Jianguomenqiao sewage pipeline in Beijing, China, was tested, resulting in the discovery of 87 defects, including 39 loose soil areas at the bottom of the pipe exterior, 40 void areas, and 8 cavities.

Review of Sensor-Based Subgrade Distress Identifications

“…At present, the equipment for monitoring pipeline leakage distresses includes sound sensors, humidity sensors, and ground-penetrating radar. Humidity sensor [65][66][67][68] Ground-Penetrating Radar (GPR) [69][70][71][72][73]…”

“…Statistical analysis was carried out to evaluate the influence of soil characteristics on methane migration distance and concentration. Xu Maoxuan et al [70] designed a threechannel ground-penetrating radar (GPR) detection device for drainage pipelines, which realized the synchronous detection of the interior, main body, and external environments of pipelines and improved the detection depth and efficiency. Savin Adriana et al [71] used ground-penetrating radar to detect and evaluate underground drainage pipes passing through large building areas parallel to the riverbed.…”

Advancing Urban Wastewater Management: Optimizing Sewer Performance through Innovative Material Selection for the Armlet with a Wet Circuit Measurement System

“…It seamlessly integrated into the sewer system without requiring extensive modifications or disruptions to normal operations [47]. The nonintrusive measurement techniques employed by the device also ensured minimal impact on the system's hydraulic performance and overall functionality [48]. The newly developed device brings forth numerous benefits for urban wastewater management systems [49].…”

Research on Time Series-Based Pipeline Ground Penetrating Radar Calibration Angle Prediction Algorithm

“…This capability represents one of the fundamental technologies employed in urban underground space security systems [ 1 ]. The research object of this study is the three-channel drainage pipeline radar detection device [ 2 , 3 ], which has been developed by the China University of Mining and Technology (Beijing) and is depicted in Figure 1 . This device consists of a video system and a radar antenna system that are used to determine the corrosion depth of the pipe top and detect voids outside the pipe.…”