基于InSAR技术的输气管道工程穿越煤矿采空区形变特征分析研究  

Analysis and research on deformation characteristics in goaf area of coal mines crossed by gas pipeline project based on InSAR technology

作　　者：钟储汉[1] ZHONG Chuhan(SINOPEC Petroleum Engineering Corporation,Dongying 257026,China)

机构地区：[1]中石化石油工程设计有限公司,山东东营257026

出　　处：《石油工程建设》2023年第3期10-16,共7页Petroleum Engineering Construction

摘　　要：针对国内某输气管道穿越煤矿采空区工程,基于2015—2021年哨兵1号的114景降轨InSAR数据,融合SBAS-InSAR和PS-InSAR技术进行数据处理,提高了采空区地表形变监测点的密度,获得了研究区域地表形变区的分布影响范围和形变信息,并进行了现场调查验证。结果表明,输气管道穿越采空区分布有A、B、C、D共4处沉降区域,其中B区域(沉降中心最大沉降速率约为377 mm/a)覆盖了拟建管道部分路段,影响长度约1.2 km,影响路段地表最大形变速率约为35 mm/a。基于InSAR技术获得了输气管道穿越煤矿采空区地表形变时空特征,揭示了监测分析时间段该煤矿采空区对拟建管道路由的影响范围和形变时间序列特征,为输气管道安全设计提供了技术依据。For a gas pipeline project crossing the goaf area of coal mines in China,InSAR data of 114 scenes of descending track of sentinel 1 from 2015 to 2021 were obtained,and SBAS-InSAR and PS-InSAR technologies were used for data processing,which increased the density of surface deformation monitoring points in the goaf area.The distribution influence range and deformation information of the surface deformation area in the study area were obtained,which were then verified by on-site investigations.The results show that there are four subsidence areas,namely A,B,C,and D in which the gas pipeline passes through the goaf area.Specifically,the B area(the maximum subsidence rate of the subsidence center is about 377 mm/a)covers part of the proposed pipeline section,and the impact length is about 1.2 km.The maximum surface deformation rate of the affected section is about 35 mm/a.The paper obtains the temporal and spatial characteristics of the surface deformation of the goaf area of coal mines crossed by gas pipelines based on InSAR technology,reveals the influence range and deformation time series characteristics of the goaf area of the coal mine on the route of the proposed pipeline during the monitoring and analysis period,and provides a technical basis for the safety design of the gas pipeline.

关 键 词：INSAR 管道 采空区 地表形变 

分 类 号：TE973[石油与天然气工程—石油机械设备] TD325.3[矿业工程—矿井建设]