非均匀沉降区埋地管道力学响应研究  

Mechanical response of buried pipeline in non-uniform settlement area

作　　者：卢国宏 谢锐 郭建明 罗飞 刘小波 张杰[6] LU Guo-hong;XIE Rui;GUO Jian-ming;LUO Fei;LIU Xiao-bo;ZHANG Jie(Shandong Provincial Lunan Geology and Exploration Institute(Shandong Provincial Bureau of Geology and Mineral Resources No.2 Geological Brigade),Jining 272100,China;School of Intelligent Manufacturing,Sichuan Institute of Arts and Science,Dazhou 635000,China;Bureau of Geophysical Prospecting INC.,China National Petroleum Corporation,Zhuozhou 072750,China;Pigprox Inspection Technology(Chengdu)Co.Ltd.,Chengdu 610041,China;Kunming Oil and Gas Transmission Branch of Southwest Pipeline Company,National Pipe Network Group,Kunming 650000,China;Oil and Gas Equipment Technology Sharing and Service Platform of Sichuan Province,Southwest Petroleum University,Chengdu 610500,China;Technology Innovation Center of Restoration and Reclamation in Mining induced Subsidence Land,Ministry of Natural Resources,Jining 272100,China)

机构地区：[1]山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队),山东济宁272100 [2]四川文理学院智能制造学院,四川达州635000 [3]中国石油集团东方地球物理勘探有限责任公司,河北涿州072750 [4]聪明猪检测技术(成都)有限公司,四川成都610041 [5]国家管网集团西南管道昆明输油气分公司,云南昆明650000 [6]西南石油大学石油天然气装备技术四川省科技资源共享服务平台,四川成都610500 [7]自然资源部采煤沉陷区综合治理工程技术创新中心,山东济宁272100

出　　处：《兰州理工大学学报》2024年第3期64-68,共5页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(52104223)。

摘　　要：地层非均匀沉降是埋地管道面临的常见地质灾害之一,影响管道安全运行.为此建立地层沉降区管土耦合模型,研究了地层沉降量、管道壁厚、内压、管材对管道屈曲模式和力学性能的影响.结果表明:地层沉降作用下管道轴向拉伸应变和压缩应变集中在沉降过渡区;沉降量较小时管道表面应变呈波纹状分布,沉降较大时管道产生局部屈曲;相同工况下,薄壁管道易发生屈曲失效,厚壁管道出现波纹状应变分布;随着内压增大,管道屈曲程度逐渐减弱;高钢级管道的屈曲程度越小.The non-uniform settlement of the stratum is one of the common geological disasters faced by buried pipes,which affects the safe operation of pipes.The pipe soil coupling model in the stratum settlement area is established to investigate the effects of stratum settlement,pipe wall thickness,internal pressure,and pipe steel grade on the pipe’s buckling mode and mechanical properties.The results show that the axial tensile strain and compressive strain of the pipe are concentrated in the settlement transition zone under the action of stratum settlement.When the settlement is small,the surface strain of the pipe is wavy,while the pipe produces local buckling when the settlement is large.Under the same working conditions,thin-walled pipes are prone to buckling failure,whereas thick-walled pipes appear corrugated strain distribution.Additionally,with the increasing of internal pressure,the buckling of the pipe gradually weakens.The buckling degree of high-grade steel pipes is smaller.

关 键 词：地层沉降 X80管道 轴向应变 屈曲失效 

分 类 号：TE973[石油与天然气工程—石油机械设备]