Several millions of kilometres of pipes and cables are buried beneath our streets in the UK. As they are not visible and easily accessible, the monitoring of their integrity as well as the quality of their contents is a challenge. Any information of these properties aids the utility owners in their planning and management of their maintenance regime. Traditionally, expensive and very localised ...

An experimental prototype, comprising a buried pipeline, was built with the purpose of calibrating a transmission line model and an artificial neural network (ANN) algorithm for locating and assessing the severity of external corrosion damage of defects in the pipeline’s coating when the pipe was subjected to different levels of cathodic protection (CP) and to different environmental scenarios....

The implementation of effective strategies to manage leaks represents an essential goal for all utilities involved with drinking water supply in order to reduce water losses affecting urban distribution networks. This study concerns the early detection of leaks occurring in small-diameter customers’ connections to water supply networks. An experimental campaign was carried out in a test bed to ...

An inverse analysis model was developed which provides a mathematical framework for interpretation, in terms of the condition of a buried pipeline, of survey data in the presence of random noise. A boundary-element forward model was coupled with a weighted nonlinear regression algorithm to obtain pipe surface properties from two types of survey data: soil-surface potentials and local values of ...

Modern countries utilise buried pipelines for the long-distance transportation of water, oil, and gas due to their efficiency continuity delivery receiving locations. Due soil movements such as landslides, excessive earth pressure imposed on causes damage and, consequently, leaking liquids, gases or other harmful effluents into soil, groundwater, atmosphere. By using a large-scale physical mode...

The gas in a coal seam is clean energy source, but it also the main cause of accidents during mining mineral resources. There large pressure–relief influx upper and lower adjacent layers 1211 working face Wanfeng Coal Mine Jinhui, Shanxi Province, China. Based on evolution law overburden fractures, collaborative extraction mode “directional drilling gas-conducting fractured zone + staggered bur...

Pipeline surface defects such as cracks cause major problems for asset managers, particularly when the pipe is buried under the ground. The manual inspection of surface defects in the underground pipes has a number of drawbacks, including subjectivity, varying standards, and high costs. An automatic inspection system using image processing and artificial intelligence techniques can overcome man...