{"title":"Large-Scale Physical Model Test on the Influence of Landslide Hazards on Oil and Gas Pipeline Bending","authors":"Xianjie Hao, Honglan Zhang, Fan Cui, Yuguang Chen, Yulong Chen, Daiyu Gao, Qian Zhang, Yinpen Zhao","doi":"10.1002/ese3.1991","DOIUrl":null,"url":null,"abstract":"<p>Due to its wide distribution, the long-distance oil and gas pipeline will inevitably pass through the landslide risk area. This study aims to investigate the impact of landslide geological disasters on oil and gas pipelines, particularly focusing on the deformation characteristics of pipelines under various landslide dip angles. To achieve this, a large physical simulation platform was designed and established as part of the methods used to replicate the effects of landslide geological disasters on oil and gas pipelines. Experiments were conducted at different dip angles, monitoring and analyzing changes in stress and strain within the pipeline, as well as soil displacement. Based on the experimental results, we draw the following conclusions: (1) the bending process of the pipeline can be divided into slow-bending stage, constant-speed bending stage, and accelerated-bending stage. (2) The tensile strain is produced back to the impact direction of landslide; the compressive strain is produced facing the direction of landslide. At the point with the largest impact force of the landslide, when the dip angle of the landslide is 38°, the rate of slow increase is the greatest in the four stages, which is about 77 times that at a slope of 10° (3) At the same point, with the increase of the dip angle, stress is also gradually increasing. When the slope reaches the angle posing a landslide hazard, the maximum rate of change of stress is about 26.9 × 10<sup>−6 </sup>kPa/s. (4) At the centre of the pipeline, the strain difference between the back and facing the direction of the landslide increases continuously. These experimental results have obtained the pipeline deformation law in the whole process of pipeline landslide disaster, which can provide great help for the monitoring and early warning of pipeline landslide disasters on site.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 9","pages":"4287-4298"},"PeriodicalIF":3.4000,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.1991","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy Science & Engineering","FirstCategoryId":"5","ListUrlMain":"https://scijournals.onlinelibrary.wiley.com/doi/10.1002/ese3.1991","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
Due to its wide distribution, the long-distance oil and gas pipeline will inevitably pass through the landslide risk area. This study aims to investigate the impact of landslide geological disasters on oil and gas pipelines, particularly focusing on the deformation characteristics of pipelines under various landslide dip angles. To achieve this, a large physical simulation platform was designed and established as part of the methods used to replicate the effects of landslide geological disasters on oil and gas pipelines. Experiments were conducted at different dip angles, monitoring and analyzing changes in stress and strain within the pipeline, as well as soil displacement. Based on the experimental results, we draw the following conclusions: (1) the bending process of the pipeline can be divided into slow-bending stage, constant-speed bending stage, and accelerated-bending stage. (2) The tensile strain is produced back to the impact direction of landslide; the compressive strain is produced facing the direction of landslide. At the point with the largest impact force of the landslide, when the dip angle of the landslide is 38°, the rate of slow increase is the greatest in the four stages, which is about 77 times that at a slope of 10° (3) At the same point, with the increase of the dip angle, stress is also gradually increasing. When the slope reaches the angle posing a landslide hazard, the maximum rate of change of stress is about 26.9 × 10−6 kPa/s. (4) At the centre of the pipeline, the strain difference between the back and facing the direction of the landslide increases continuously. These experimental results have obtained the pipeline deformation law in the whole process of pipeline landslide disaster, which can provide great help for the monitoring and early warning of pipeline landslide disasters on site.
期刊介绍:
Energy Science & Engineering is a peer reviewed, open access journal dedicated to fundamental and applied research on energy and supply and use. Published as a co-operative venture of Wiley and SCI (Society of Chemical Industry), the journal offers authors a fast route to publication and the ability to share their research with the widest possible audience of scientists, professionals and other interested people across the globe. Securing an affordable and low carbon energy supply is a critical challenge of the 21st century and the solutions will require collaboration between scientists and engineers worldwide. This new journal aims to facilitate collaboration and spark innovation in energy research and development. Due to the importance of this topic to society and economic development the journal will give priority to quality research papers that are accessible to a broad readership and discuss sustainable, state-of-the art approaches to shaping the future of energy. This multidisciplinary journal will appeal to all researchers and professionals working in any area of energy in academia, industry or government, including scientists, engineers, consultants, policy-makers, government officials, economists and corporate organisations.