Strain-based design for buried pipelines subjected to landslides

Han, Bing; Zhao, Huimin; Jing, Hongyuan; Wu, Zhangzhong

doi:10.1007/s12182-012-0204-y

Cited by 32 publications

(8 citation statements)

References 10 publications

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“…Establishing a slope-pipe coupling finite element model to analyze slope stability and pipeline stress and deformation is a widely used method in current research (Han et al, 2012;Li et al, 2016;Zhang et al, 2016;Mamuzo Edeki, 2020). As the UAV monitoring data cannot directly and quantitatively analyze the influence of unstable slope on the deformation of the pipeline body, this study is based on the strength reduction method and adopts the slope-pipe fully coupled finite element model to carry out multi-scenario simulation from stable state to unstable state.…”

Section: Finite Element Simulation Of Slope-pipe Couplingmentioning

confidence: 99%

Detection and Numerical Simulation of Potential Hazard in Oil Pipeline Areas Based on UAV Surveys

Yan

Yin

et al. 2021

Front. Earth Sci.

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Western China is rich in oil and gas resources, and many oil and gas pipelines are under construction or have been completed. However, many water-related natural hazards, such as landslides, collapses, rockfalls, and debris flows, have developed in the areas passed through by oil and gas pipelines and seriously threaten the operational safety of these pipelines. Therefore, it is urgent to carry out large-scale identification and assessment of pipeline geological hazards. At present, conventional on-site investigation, evaluation, monitoring, and early warning methods are difficult to apply for rapid identification and evaluation of pipeline geological hazards across large-scale areas. Based on this, this study takes the pipeline of Sinopec Marketing South China Branch in Yunnan Province as the research area. In this research, unmanned aerial vehicle (UAV) and photogrammetry technology were used to quickly and accurately obtain multi-phase images of an oil pipeline passing through the study area, and the images were post-processed to obtain multi-phase high-resolution, high-precision digital orthophoto maps and digital terrain models (DTMs) to identify landform changes and deformation. The focus of this research is to propose a set of technical methods for UAV point cloud filtering. The DTMs obtained based on this method can effectively identify unstable areas of oil pipelines. In addition, we have carried out numerical simulations under different motion scenarios in unstable regions, providing scientific support for future geological hazard prevention and mitigation and engineering practices in oil pipeline areas.

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Section: Finite Element Simulation Of Slope-pipe Couplingmentioning

confidence: 99%

Detection and Numerical Simulation of Potential Hazard in Oil Pipeline Areas Based on UAV Surveys

Yan

Yin

et al. 2021

Front. Earth Sci.

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“…Pipeline specifications could also be changed to promote greater ductility, or resistance to failure, under hillslope displacement (Honegger et al, 2010;Han et al, 2012). In turn, the water resources infrastructure would benefit from fewer leaks and breaks and higher levels of reliability.…”

Section: Feedbacks Between Erosion and Slope Instabilities From Wrifsmentioning

confidence: 99%

Rapid assessment of urban mega-gully and landslide events with Structure-from-Motion techniques validates link to water resources infrastructure failures

Gudino‐Elizondo

Brand

Biggs

et al. 2021

Preprint

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Abstract. Mega-gullies and landslides pose significant hazards to urban development on steep terrain. Water resources infrastructure failures (WRIFs), such as leaks and breaks in water supply pipes, have been postulated as a trigger of mass movement events but data for validation has been challenging to acquire since earthwork proceeds quickly after events to repair roads and other infrastructure. Urban development in Tijuana, Mexico was monitored for a five-year period to document the occurrence of mega-gullies and landslides, including sediment volumes. A rapid assessment approach was developed based on photogrammetric observations from an unmanned aerial vehicle (UAV) and Structure from Motion (SfM) digital processing. Three hazardous mass-movement events were observed including two mega-gullies and one landslide. Furthermore, all three events were linked to WRIFs. Frequency analysis points to the annual probability of a WRIF-based erosion event in the range of 40–60 %, which is far higher than design levels typically used for urban stormwater infrastructure (5–10 %). Additionally, sediment modelling points to WRIF-based erosion as a non-negligible contributor to sediment generation. These results suggest that WRIFs are a significant contributor to erosion hazards facing urban development on steep terrain, and call for expanded monitoring to characterize the occurrence and modes of WRIF-based erosion events.

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“…This paper only analyzes the stress condition of pipelines under horizontal pass-through. When the pipeline passes through the landslide mass horizontally, the slide direction of the landslide mass is at right angles to the pipeline axis (Ma et al 2006;Han et al 2012). The evenly distributed load endured by the pipeline is in the horizontal and vertical directions.…”

Section: Introductionmentioning

confidence: 99%

Stress analysis on large-diameter buried gas pipelines under catastrophic landslides

Zhang

Chen

et al. 2017

Pet. Sci.

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This paper presents a method for analysis of stress and strain of gas pipelines under the effect of horizontal catastrophic landslides. A soil spring model was used to analyze the nonlinear characteristics concerning the mutual effects between the pipeline and the soil. The Ramberg-Osgood model was used to describe the constitutive relations of pipeline materials. This paper also constructed a finite element analysis model using ABAQUS finite element software and studied the distribution of the maximum stress and strain of the pipeline and the axial stress and strain along the pipeline by referencing some typical accident cases. The calculation results indicated that the maximum stress and strain increased gradually with the displacement of landslide. The limit values of pipeline axial stress strain appeared at the junction of the landslide area and non-landslide area. The stress failure criterion was relatively more conservative than the strain failure criterion. The research results of this paper may be used as a technical reference concerning the design and safety management of large-diameter gas pipelines under the effects of catastrophic landslides.

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Strain-based design for buried pipelines subjected to landslides

Cited by 32 publications

References 10 publications

Detection and Numerical Simulation of Potential Hazard in Oil Pipeline Areas Based on UAV Surveys

Detection and Numerical Simulation of Potential Hazard in Oil Pipeline Areas Based on UAV Surveys

Rapid assessment of urban mega-gully and landslide events with Structure-from-Motion techniques validates link to water resources infrastructure failures

Stress analysis on large-diameter buried gas pipelines under catastrophic landslides

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