Damage Evolution of Surface Soil and Buried Gas Pipelines Under Mining-Induced Subsidence in Goaf Areas.
Saved in:
| Title: | Damage Evolution of Surface Soil and Buried Gas Pipelines Under Mining-Induced Subsidence in Goaf Areas. |
|---|---|
| Authors: | Zhao, Guozhen1,2 (AUTHOR) zhaoguozhen@tyut.edu.cn, Liang, Haoyan1,2 (AUTHOR), Li, Jiadong1 (AUTHOR), Yang, Yaochi1,2 (AUTHOR) |
| Source: | Energies (19961073). Mar2026, Vol. 19 Issue 5, p1366. 19p. |
| Subject Terms: | *Pipeline failures, *Buried pipes (Engineering), *Computer simulation, *Mine subsidences, *Pipe bending, *Simulation methods & models |
| Geographic Terms: | China |
| Abstract: | To address the potential threat of surface subsidence caused by coal mining to the safe operation of buried gas pipelines in goaf collapse areas, this study investigates the geological conditions of the Mugu Coal Mine in Shanxi Province, China, and a gas pipeline passing through its surface mining area. Using a combination of numerical simulations and physical analog modeling, the mechanical response and deformation characteristics of the pipeline under mining-induced influences were systematically analyzed from three perspectives: the failure mechanisms of surface soil, the pipe–soil interaction behavior, and the damage evolution of the pipeline within the goaf. The research reveals a separation-induced failure pattern of the gas pipeline in mining-affected areas, referring to the mechanism in which differential settlement causes pipe–soil detachment, leading to unsupported bending deformation and stress concentration. Results show that the subsidence basin expands rapidly when the working face advances between 150 m and 210 m. Before this stage, the pipeline and surface soil deform synergistically with a symmetric subsidence curve centered on the goaf and uniformly distributed loads, showing no significant damage. During this stage, non-synergistic deformation occurs, leading to separation between the pipeline and soil. The maximum subsidence point shifts away from the center, destroying symmetry and causing stress concentration at the mining boundary, the advancing working face, and the goaf center, resulting in severe bending and rapid failure. After this stage, the pipe–soil interaction restabilizes with reduced separation height and extent, though pipeline deformation and damage continue to increase gradually. These findings provide a theoretical basis for engineering design optimization, targeted reinforcement measures, and monitoring strategies for gas pipelines in similar goaf collapse areas. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| FullText | Links: – Type: pdflink Text: Availability: 1 |
|---|---|
| Header | DbId: enr DbLabel: Energy & Power Source An: 192641091 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Damage Evolution of Surface Soil and Buried Gas Pipelines Under Mining-Induced Subsidence in Goaf Areas. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zhao%2C+Guozhen%22">Zhao, Guozhen</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> zhaoguozhen@tyut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liang%2C+Haoyan%22">Liang, Haoyan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Jiadong%22">Li, Jiadong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Yaochi%22">Yang, Yaochi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Mar2026, Vol. 19 Issue 5, p1366. 19p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Pipeline+failures%22">Pipeline failures</searchLink><br />*<searchLink fieldCode="DE" term="%22Buried+pipes+%28Engineering%29%22">Buried pipes (Engineering)</searchLink><br />*<searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br />*<searchLink fieldCode="DE" term="%22Mine+subsidences%22">Mine subsidences</searchLink><br />*<searchLink fieldCode="DE" term="%22Pipe+bending%22">Pipe bending</searchLink><br />*<searchLink fieldCode="DE" term="%22Simulation+methods+%26+models%22">Simulation methods & models</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22China%22">China</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: To address the potential threat of surface subsidence caused by coal mining to the safe operation of buried gas pipelines in goaf collapse areas, this study investigates the geological conditions of the Mugu Coal Mine in Shanxi Province, China, and a gas pipeline passing through its surface mining area. Using a combination of numerical simulations and physical analog modeling, the mechanical response and deformation characteristics of the pipeline under mining-induced influences were systematically analyzed from three perspectives: the failure mechanisms of surface soil, the pipe–soil interaction behavior, and the damage evolution of the pipeline within the goaf. The research reveals a separation-induced failure pattern of the gas pipeline in mining-affected areas, referring to the mechanism in which differential settlement causes pipe–soil detachment, leading to unsupported bending deformation and stress concentration. Results show that the subsidence basin expands rapidly when the working face advances between 150 m and 210 m. Before this stage, the pipeline and surface soil deform synergistically with a symmetric subsidence curve centered on the goaf and uniformly distributed loads, showing no significant damage. During this stage, non-synergistic deformation occurs, leading to separation between the pipeline and soil. The maximum subsidence point shifts away from the center, destroying symmetry and causing stress concentration at the mining boundary, the advancing working face, and the goaf center, resulting in severe bending and rapid failure. After this stage, the pipe–soil interaction restabilizes with reduced separation height and extent, though pipeline deformation and damage continue to increase gradually. These findings provide a theoretical basis for engineering design optimization, targeted reinforcement measures, and monitoring strategies for gas pipelines in similar goaf collapse areas. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=192641091 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/en19051366 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 1366 Subjects: – SubjectFull: Pipeline failures Type: general – SubjectFull: Buried pipes (Engineering) Type: general – SubjectFull: Computer simulation Type: general – SubjectFull: Mine subsidences Type: general – SubjectFull: Pipe bending Type: general – SubjectFull: Simulation methods & models Type: general – SubjectFull: China Type: general Titles: – TitleFull: Damage Evolution of Surface Soil and Buried Gas Pipelines Under Mining-Induced Subsidence in Goaf Areas. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zhao, Guozhen – PersonEntity: Name: NameFull: Liang, Haoyan – PersonEntity: Name: NameFull: Li, Jiadong – PersonEntity: Name: NameFull: Yang, Yaochi IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19961073 Numbering: – Type: volume Value: 19 – Type: issue Value: 5 Titles: – TitleFull: Energies (19961073) Type: main |
| ResultId | 1 |
