Results 1 to 10 of about 7,756 (268)

Study on acoustic source characteristics of distributed optical fiber acoustic wave monitoring buried natural gas pipeline leakage [PDF]

open access: yesE3S Web of Conferences, 2021
In order to study the leakage of buried natural gas pipeline caused serious environmental pollution and human casualties, the acoustic propagation characteristics of buried natural gas pipeline leakage monitored by distributed optical fiber were studied.
Wang Chun   +3 more
doaj   +1 more source

Research on the positioning of buried polyethylene pipelines considering the acoustic attenuation characteristics [PDF]

open access: yesScientific Reports
Polyethylene pipelines have been widely used in the construction of urban pipelines. Due to the non-magnetic and non-conductive properties of polyethylene pipelines, traditional metal pipe positioning techniques are unable to effectively detect ...
Ao Zhang   +3 more
doaj   +2 more sources

Numerical simulation of buckling behavior of the buried steel pipeline under reverse fault displacement [PDF]

open access: yesMechanical Sciences, 2015
Reverse fault movement is one of the threats for the structural integrity of buried oil-gas pipelines caused by earthquakes. Buckling behavior of the buried pipeline was investigated by finite element method.
J. Zhang, Z. Liang, C. J. Han, H. Zhang
doaj   +1 more source

Simulation and Experimental Verification of Buried Pipeline Corrosion under the High-Voltage Direct Current Interference

open access: yesInternational Journal of Electrochemical Science, 2021
Aimed at the corrosion caused by the ground current of the high-voltage direct current (HVDC) transmission system to adjacent buried pipelines, horizontal delamination is carried out according to different soil conductivities, and a field-circuit ...
Shan Lin   +3 more
doaj   +1 more source

Numerical Modeling of Mechanical Behavior for Buried Steel Pipelines Crossing Subsidence Strata. [PDF]

open access: yesPLoS ONE, 2015
This paper addresses the mechanical behavior of buried steel pipeline crossing subsidence strata. The investigation is based on numerical simulation of the nonlinear response of the pipeline-soil system through finite element method, considering large ...
J Zhang, Z Liang, C J Han
doaj   +1 more source

Experimental and numerical study of shallow‐buried high‐density polyethylene pipeline under collapse touchdown impact

open access: yesEnergy Science & Engineering, 2022
The debris from structures produced during the blasting demolition of engineered buildings (structures) may fall near buried pipelines, which threaten the integrity of the buried gas pipeline.
Zhaotun An, Qiao Tang, Hu Li, Peng Zhang
doaj   +1 more source

Integrity Assessment of Wall Distorted of Buried Gas Pipeline

open access: yesKapal, 2023
In the oil and gas industry, the pipeline is the main mode to transport the product and can be applied for long-distance transportation; hence some pipe segments may be buried underground. Buckling as the main cause of pipeline deformation and failure is
Wira Herucakra   +2 more
doaj   +1 more source

Research on Damage Assessment of Buried Standard and Carbon-Fibre-Reinforced Polymer Petroleum Pipeline Subjected to Shallow Buried Blast Loading in Soil

open access: yesShock and Vibration, 2021
Buried petroleum pipelines may encounter threats from blast loading due to terrorist attacks, accidental explosions, and artificial blasting during in-progress construction.
Ying Cui   +4 more
doaj   +1 more source

Experimental Study on Thermal Insulation Effect of the Buried Oil-Gas Pipelines in Permafrost Regions

open access: yesGeofluids, 2022
In permafrost regions, long distance buried pipelines are widely used to transport oil and natural gas resources. However, pipeline problems occur frequently due to the complicated surrounding environment and transportation requirement of positive ...
Deren Liu   +5 more
doaj   +1 more source

Numerical Simulation Study on the Performance of Buried Pipelines under the Action of Faults

open access: yesApplied Sciences, 2023
The present paper investigates the mechanical behavior of buried steel pipelines crossing an active fault. Permanent ground deformation induced by an earthquake will cause serious damage to buried steel pipelines, resulting in buckling failure or even ...
Rulin Zhang   +4 more
doaj   +1 more source

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