A Preliminary Study on Leakage Detection of Deteriorated Underground Sewer Pipes Using Aerial Thermal Imaging

Park, Sung-Yong; Lim, Hee‐Jung; Tamang, Bibek; Jin, Jihuan; Lee, Seung-Joo; Park, Songsik; Kim, Yong-Seong

doi:10.1007/s40999-020-00521-8

Cited by 8 publications

(11 citation statements)

References 15 publications

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“…The in-service video technology is built on a technological platform that allows for the insertion of a tethered sensor into pressurized water pipes. The CCTV images can only be used to identify an interior view of the sewage pipes' state as they are unable to detect the depth of the fractures [22]. Additionally, no information concerning void development in the exterior section of the sewage pipes is provided by the analyses of CCTV photos [23].…”

Section: Closed-circuit Television (Cctv)mentioning

confidence: 99%

“…The Ground Penetration Radar (GPR) method is one of several Near-Surface Geophysical (NSG) methods for analyzing various wave and induction properties in materials. It is a nondestructive testing (NDT) technique that makes use of microwave-frequency electromagnetic radiation [22]. This approach uses high-frequency electro-magnetic pulses to send out and receive reflected echoes [26].…”

Section: Ground Penetration Radar (Gpr)mentioning

confidence: 99%

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Review of Water Leak Detection Methods in Smart Building Applications

Yussof

2022

Buildings

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In recent years, the identification of water leak detection methods has entered a wide range of fields. Pipeline failures in water distribution networks lead to the loss of a considerable amount of high-quality water. Different monitoring methods are often used to identify the failing infrastructure, which is subsequently maintained. Increased pressures on a fast-expanding water supply network needs the development of better leak detection technologies, particularly for use in smart building applications. This paper offers a detailed examination of water leak detection methods, intending to determine the state-of-the-art approaches and make recommendations for future research. It is designed to demonstrate smart buildings, but it may also be utilized in another similar context. This review concludes that, despite prior achievements, there is still much room for improvement, particularly in the domain of real-time models for earlier leak detection methods in building automation. These models should enable the integration of leakage detection, evaluation, and control system that, with minimal human interaction, may be customized for efficient leakage detection in real-world circumstances.

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Section: Closed-circuit Television (Cctv)mentioning

confidence: 99%

Section: Ground Penetration Radar (Gpr)mentioning

confidence: 99%

Review of Water Leak Detection Methods in Smart Building Applications

Yussof

2022

Buildings

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“…Besides, signal processing methods were applied for ultrasonic data [76] and acoustic data [77] to detect defects and identify structural aspects of a sewer pipe such as a manhole and lateral connection. The aerial thermal imaging (ATI) technique [78] was also used to identify the leakage points in sewer pipelines by analyzing the surface thermal diffusion behavior of the ground surface.…”

Section: Automated Inspection Data Interpretationmentioning

confidence: 99%

Construction and maintenance of urban underground infrastructure with digital technologies

Wang

Yin

2022

Automation in Construction

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“…Assuming some anomalous temperature variation due to sewer ex-infiltration, Park et al (2020) applied the ATI technique on two sites during morning and afternoon (Figure 2) to analyze the temperature variation on the ground surface. Detected temperature anomalies from acquired thermal images captured by an unmanned aerial vehicle (UAV) mounted with the thermal camera were referred to the potential leakages.…”

Section: Aerial Thermal Imaging (Ati)mentioning

confidence: 99%

Towards a decentralized solution for sewer leakage detection – a review

Sadeghikhah

Ahmed

Krebs

2022

Water Science and Technology

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Sewer pipelines often leak due to physical, operational, and environmental deterioration factors. Due to the hidden infrastructure of the sewer systems, leakage detection is often costly, challenging, and crucial at the city scale. Various sewer inspection methods (SIMs) have been developed and implemented these days. This study evaluates the existing SIMs and categorizes them based on their area of impact (AoI) into three classes. Tier-one (T-I) methods, such as deterioration models and hotspot mapping, tend to grasp a broader and reliable understanding of the sewer systems' structural health and pinpoint the network sections that are more prone to leakage. As an intermediate solution, Tier-two (T-II) non-destructive methods, such as aerial thermal imagery (ATI) and electrical resistivity tomography (ERT), inspect the potential pipe clusters regardless of their material and visualize the leaked plume generated from defects and cracks. Tier-three (T-III) methods include in-pipe SIMs, such as visual and multi-sensory inspections, that can provide an in-depth understanding of the pipe and its deterioration stage. In this study, we suggest that a sustainable sewer inspection plan should include at least two SIMs belonging to different tiers to provide a dual investigation of precision and AoI, a balance between cost and time as well as an equilibrium between self-sufficiency and decentralization.

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A Preliminary Study on Leakage Detection of Deteriorated Underground Sewer Pipes Using Aerial Thermal Imaging

Cited by 8 publications

References 15 publications

Review of Water Leak Detection Methods in Smart Building Applications

Review of Water Leak Detection Methods in Smart Building Applications

Construction and maintenance of urban underground infrastructure with digital technologies

Towards a decentralized solution for sewer leakage detection – a review

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