Research on 3D Defect Information Management of Drainage Pipeline Based on BIM

Abstract

With the age of pipeline and increase in the volume of urban sewage, the pipeline has different degrees of defects, which can cause safety problems such as road collapse and urban flooding. The service life of drainage pipes is closely related to daily maintenance and inspection, so it is very important to inspect the defects and monitor the operation of drainage pipes regularly. However, the existing research lacks quantitative detection and intelligent management of pipeline defect information. Therefore, the depth camera is used as the sensor to quantitatively detect the volume and area of the pit on the concrete pipe, and a defect information management platform is constructed in this paper. Firstly, combined BIM model with 3D point cloud, this paper proposes a 3D defect information management platform of drainage pipeline. Then, the depth camera is used to collect the damage data and preprocess the data, and a method for calculating the damage volume and surface area of drainage pipeline based on 3D mesh reconstruction of the defect point cloud is proposed. The verification experiment results show that the error between the quantized volume and the real volume is mostly within 10%, and the maximum error is 17.54%, indicating high accuracy. The drainage pipeline information model is created. Finally, the data is uploaded to the information management platform to realize the visualization and informatization of pipeline defects and the later operation and maintenance requirements of the pipeline.

Current Status of and Suggestions on Sewage Treatment Fees in China

“…While most cities rely on traditional manual inspection and dredging maintenance methods, these have not effectively addressed the serious problems of structural damage, leakage, and diseases in sewage pipelines, resulting in low efficiency. In China, the influent COD concentration of sewage treatment plants typically falls below 300 mg/L, and the BOD5 concentration generally remains below 150 mg/L, significantly lower compared with developed countries [31,[40][41][42][43][44][45].…”

Current Situation of Drainage Pipe Network in China and its Detection Technology: a Brief Review

“…China's urban drainage pipeline systems have achieved significant progress with the continuous economic development and urbanization [1]. However, China's sewers now have different degrees of defects due to the aging of drainage pipelines, poor maintenance and the erosion of sewage [2]. The damaged sewer systems have resulted in the repeated black and stink of urban rivers, groundwater pollution, frequent urban floods, the low influent COD concentration of wastewater treatment plants (WWTPs), and road collapse [2,3], thus causing huge economic losses, safety hazards, and the abnormal operation of WWTPs.…”

“…However, China's sewers now have different degrees of defects due to the aging of drainage pipelines, poor maintenance and the erosion of sewage [2]. The damaged sewer systems have resulted in the repeated black and stink of urban rivers, groundwater pollution, frequent urban floods, the low influent COD concentration of wastewater treatment plants (WWTPs), and road collapse [2,3], thus causing huge economic losses, safety hazards, and the abnormal operation of WWTPs. Since the construction and renovation of urban drainage pipe network was issued by the Action Plan for Yangtze River Protection and Restoration and the 14 th Five-Year Plan, urban drainage pipe network has received increasing attention.…”

“…Moreover, the damaged drainage pipelines involve various defects such as rupture, corrosion, leakage, wrong mouth, dislocation, deposition, obstacle, etc. [2,6,7]. To extend the service life of pipelines, it is very important to comprehensively understand the current state of China's urban drainage pipeline systems by using reliable pipe defect inspection and condition assessment methods.…”

“…In addition, a large number of inspection technologies have been widely used for the inspection of China's damaged pipelines such as closed circuit television detection technology (CCTV), pipe quick view inspection technology (QV), sonar detection technology, ground penetrating radar (GPR) and the traditional detection methods (manual detection method, observation method, reflector method, mud bucket method, etc) [2,11,12]. Previous related research mainly focused on the application of these techniques and characterized their applicable conditions in some specific engineering cases [12][13][14][15].…”