Buried pipeline leakage will affect the thermal characteristics of soil environment, leading to a poor environment. In addition, natural gas possibly produces an explosion and subsequent fire, which has fatal harm. Sustainable detection underground leaks is significant part current research. this study, method for leak buried PE pipelines based on sound source investigated. The simulation softw...

In this paper, in order to understand the flow-pipe interaction more clearly, the variations on flow pattern around semi-buried pipelines due to steady current have physically and numerically been investigated. In physical modeling section, the experiments have been carried out in a flume with 10 meter length, 0.3 meter width and 0.5 meter depth using a P.V.C pipe with 6.35 cm in diameter (for ...

Abstract Based on the principle of electromagnetic eddy current testing, aiming at problems heavy workload and difficult location defects in periodic inspection buried pipelines, distribution probes, is modeled simulated by using ANSYS EM simulation software, correlation model between pipeline parameters, excitation signals, received signals established, quantitative relationship wall thickness...

Abstract Submarine slope instabilities are considered one of the major threats for offshore buried pipelines. This paper presents a novel method to evaluate ultimate pressure acting on pipeline during liquefaction an inclined seabed. Small-scale model tests with pipes at three different embedment ratios have been conducted enhanced centrifugal acceleration condition. A high-speed, high-resoluti...