潜-韶管道地质灾害综合防治体系实践与应用  

Practice and Application of Comprehensive Prevention and Control System of Geological Hazards Affecting Qian-Shao Pipelines

作　　者：张鑫 ZHANG Xin(Sinopec Petroleum Engineering Corporation)

机构地区：[1]中石化石油工程设计有限公司,山东省东营市257026

出　　处：《油气田地面工程》2025年第3期15-21,共7页Oil-Gas Field Surface Engineering

摘　　要：潜-韶输气管道拟穿过韶关市浈江区(原曲江县)茶山矿区,勘察过程中发现该长输管道穿越1.6 km的采空区段,且受地形及周边环境影响无法避让。该处采空区可能诱发采空塌陷、地面塌陷、滑坡等地质灾害,进而威胁管道安全。为更好掌握采空区地表变形发展情况,完善该长输管道监测管理,采用InSAR遥感分析,结合GNSS实时监测数据,对潜-韶管道建立地质灾害综合防治体系,对地质灾害区域进行广域、实时监测预警,针对植被茂密区域,应用角反射器联合时序InSAR技术,增强卫星波长在目标区域反射强度。InSAR遥感监测结果表明:潜-韶管道茶山矿区段2处形变异常点的累计形变量分别为2.2 mm、4.1 mm,各CR点形变量较小,但整体呈增大趋势,应对形变异常区域进行长时间时序监测工作。基于InSAR历史形变分析结果,对形变异常区域布置GNSS形变监测站及降雨量监测站,采用斜率阈值法与采空区专项勘查资料确定预警阈值,实现了潜-韶输气管道穿越采空区段的全天时、全天候实时监测预警,并成功预警1处滑坡,有效提高了管道沿线地质灾害风险管控能力。The Qian-Shao Gas Pipeline intends to pass through the Chashan Mining Area,in Zhenjing District(former Qujiang County)of Shaoguan City.The geological investigation reveals that this long-distance pipeline crosses 1.6 km of the goaf section,and it cannot be avoided due to the affection of terrain and surrounding environment.This goaf section may induce geological hazards such as mining subsidence,land subsidence,landslide,etc.,which will threaten the safety of the pipeline.In order to better understand the development of ground deformation in this goaf section and improve the comprehensive management of long-distance pipelines,a comprehensive prevention and control system of geological hazards affecting Qian-Shao pipelines is established by combining InSAR remote sensing analysis and GNSS real-time monitoring technique.It realizes wide-area and real-time monitoring and warning of geological hazard areas.In heavily vegetated areas,the reflection intensity of satellite wavelength is enhanced by integrating angular reflector and time-series InSAR.The InSAR remote sensing analysis shows that the two largest cumulative deformations in the Chashan Mining Area of the Qian-Shao Pipeline are 2.2 mm and 4.1 mm,and the deformation at each CR point is small,but it shows an overall trend of increasing.Thus,the deformation anomalies should be monitored for a long time in a time-series manner.Based on the results of InSAR historical deformation analysis,GNSS deformation monitoring station and rainfall monitoring station are arranged in the deformation anomaly area,and the slopethreshold arithmetic and the investigation data of the goaf area are used to determine the early warning threshold.24-hour-a-day monitoring under all weather conditions is realized in the goaf area,and it has successfully warned of a landslide.Overall,the system effectively improved the ability of risk control of geological hazards along the pipeline.

关 键 词：潜-韶管道 管道完整性管理 地质灾害防治 INSAR GNSS实时监测 

分 类 号：P69[天文地球—地质学]