中国地质灾害与防治学报2024，Vol.35Issue(4)：115-125,11.DOI:10.16031/j.cnki.issn.1003-8035.202402018
云南某高填方边坡对油气管道的致灾风险及CFG加固效果分析对油气管道的影响
Analysis of disaster risk to oil and gas pipelines and the effect of CFG reinforcement on high-fill slopes in Yunnan
摘要
Abstract
The study aims to investigate the stability of high fill slopes and their impact on oil and gas pipelines at the foot of the slopes in a key construction project located in Anning City,Yunnan Province.The project formed a high fill slope with a length of nearly 1.6km and a maximum height of about 42 m in early 2023.Due to site planning constraints,four oil and gas pipelines were buried parallel at the foot of the high-fill slope,with the closest pipeline being only 7 m away from the foot of the slope,posing a serious threat to the safety of the oil and gas pipelines.FLAC3D software was employed to analyze the influence of the fill slope on the pipelines at the foot of the slope,and to explore the stability of the slope with the installation of five rows of CFG piles at the toe.The results show that the potential failure surface exists only within the artificial fill,above the oil and gas pipelines.The basic stability factor of the fill slope is 1.305,indicating basic stability under extreme rainfall conditions.Under natural conditions,the pipeline meets the stability requirements,but may lead to deformation and rupture under heavy rainfall conditions.With the addition of five rows of CFG piles at the slope toe,pipeline deformation and ellipticity meet the specification requirements under heavy rainfall conditions,and the safety and stability coefficient of the slope increases by 4.2％,yet fails to meet the specification safety reserve requirements.Further preventive measures are recommended to ensure the safety reserve of the fill slope.关键词
油气管道/高填方边坡/边坡稳定性/CFG桩/边坡安全储备Key words
oil and gas pipeline/high fill slopes/slope stability/CFG pile/slope safety reserve分类
天文与地球科学引用本文复制引用
刘章振,阿发友,张晶,杨大慎,刘小波..云南某高填方边坡对油气管道的致灾风险及CFG加固效果分析对油气管道的影响[J].中国地质灾害与防治学报,2024,35(4):115-125,11.基金项目
国家自然科学基金地区科学基金项目(4226070179) （4226070179）
