采动影响下浅埋输油气管线变形监测与风险性评价方法及应用实践  

Deformation Monitoring and Risk Assessment Method and Application Practice of Shallow Buried Oiland Gas Pipelines under the Influence of Mining

作　　者：张连贵 刘峰建 张鑫[3] 郭广礼[3] 李怀展 宫亚强 ZHANG Liangui;LIU Fengjian;ZHANG Xin;GUO Guangli;LI Huaizhan;GONG Yaqiang(Yankuang Energy Group Company Limited,Jining 273500,China;Dongtan Coal Mine,Yankuang Energy Group Company Limited,Jining 273512,China;School of Environment and Spatial Informatics,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]兖矿能源集团股份有限公司,山东济宁273500 [2]兖矿能源集团股份有限公司东滩煤矿,山东济宁273512 [3]中国矿业大学环境与测绘学院,江苏徐州221116

出　　处：《金属矿山》2024年第3期183-189,共7页Metal Mine

基　　金：兖矿集团股份有限公司科学技术项目(编号:1040B2022000040);国家自然科学基金区域联合基金重点项目(编号:U21A20109)。

摘　　要：目前,我国油气资源主要以埋地管线的形式输送,穿越采空区时采动造成的地表移动变形必然会对埋地输油气管线产生一定的影响和危害。鲁皖管道济宁支线穿越兖矿能源集团股份有限公司东滩煤矿,与煤矿三采区3308工作面最近水平距离仅85 m。为保证鲁皖管道济宁支线在安全运行的前提下实现3308工作面安全高效开采,提出了浅埋输油气管线及地表变形监测与评价方法。基于3308工作面地表移动变形实测及管线应力监测数据,研究了鲁皖管道济宁支线沿线地表变形特征及对管道的影响,分析了采动影响下的管线监测应力变化,在此基础上对受采动影响埋地管线当前的风险性进行了评价并给出管线防护建议措施。结果表明:目前3308工作面开采造成的地表下沉及倾斜变形对管道变形影响较小,管道沿线地表的当前稳定性级别为Ⅳ级,危险程度较低;地表移动变形对管道应力状态有一定的影响,特别是初期开采区域距离管线较近,管道沿线地表下沉较活跃,导致管道轴向应力增大;对管道进行一定周期的应力监测,监测结果均低于管道预警规范的第三级阈值,管道运行始终处于绿色无风险范围内,后续需继续采取措施对采空区场地及埋地输油气管线进行变形监测和日常防护。研究结果对于埋地输油气管线下安全高效采煤具有一定的借鉴意义。At present,China′s oil and gas resources are mainly transported in the form of buried pipelines.The surface movement and deformation caused by mining when crossing goaf will inevitably have a certain impact and harm on the buried oil and gas pipelines.The Jining Branch Pipeline of the Shandong-Anhui Pipeline passes through Dongtan Coal Mine of Yankuang Energy Group Company Limited,and the nearest horizontal distance from the 3308 working face in mining area 3 is only 85 m.In order to ensure the safety of the Jining Branch Pipeline of the Shandong-Anhui Pipeline and realize the safe and efficient mining of the 3308 working face,a monitoring and evaluation method for shallow buried oil and gas pipelines and sur-face deformation is proposed.Based on the actual measurement of surface movement and deformation of the 3308 working face and the monitoring data for pipeline stress,the characteristics of surface deformation along the Jining Branch Pipeline of the Shandong-Anhui Pipeline and its impact on the pipeline are studied,and the changes of pipeline monitoring stress under the in-fluence of mining are analyzed.On this basis,the current risk of buried pipelines affected by mining is evaluated,and the pipe-line protection measures are proposed.The results show that the surface subsidence and slope deformation caused by the mining of 3308 working face have little impact on the pipeline deformation,and the current stability level of the surface along the pipe-line is GradeⅣ,with low risk.The surface movement and deformation have a certain impact on the stress state of the pipeline,especially the initial mining area is close to the pipeline,and the surface along the pipeline is more active,leading to the in-crease of the axial stress of the pipeline.A certain period of stress monitoring practice was carried out for the pipeline,and the monitoring results were lower than the third level threshold value of the pipeline early warning specification.The pipeline opera-tion was always in a green and risk-free range.In the

关 键 词：开采沉陷 输油气管线 地表变形 风险性评价 管线保护 

分 类 号：TD325[矿业工程—矿井建设]