Session: 06-03-02 Ground Monitoring

Paper Number: 133429

133429 - Landslide Hazard Assessment and Application to Pipeline Based on InSAR 

Abstract: 

Surface deformation is one of the main factors that pose a threat to pipeline safety. Therefore, accurately measuring surface deformation and evaluating its impact on oil and gas pipelines is crucial for pipeline safety, and it is also an important means to enhance pipeline geological hazard risk management capabilities. In recent years, satellite remote sensing technology represented by InSAR has been widely applied in natural disaster risk assessment, surface deformation monitoring along pipelines, and other fields. For example, InSAR has achieved good results in monitoring surface deformation caused by underground gas storage injection and production, coal and oil field mining, landslides, and other factors.

This paper constructs an evaluation index system and method for landslide susceptibility along the pipeline based on geological environmental conditions and historical disaster information. The contribution matrix method is used to combine the regional surface displacement identified by InSAR with the landslide susceptibility evaluation results, and a landslide hazard evaluation model along the pipeline is established. Finally, this method was applied to the landslide risk assessment of the 62km pipeline in the Qinling Mountains of the China West East Gas Pipeline Project, and the risk assessment results of landslides along the pipeline were obtained, which further improved the role of large-scale surface deformation data in pipeline geological hazard risk assessment. 1）Using the hydrological method, the demonstration area was subdivided into 2370 slope units, and the Pearson correlation coefficient was used to select the initial indicators. Eight landslide susceptibility evaluation indicators were determined, including slope, elevation, slope, slope type, geological lithology, distance from pipeline, distance from road, and land use type. The natural discontinuity method was used to classify landslide susceptibility into four levels; 2）Regional surface deformation was obtained using Sentinel-1A SAR data from 2021 to 2023 and D-InSAR technique; 3）Using ArcGIS software and fixed threshold method, the landslide hazard assessment results were divided into 4 levels, ensuring the rationality and credibility of the assessment results.

Presenting Author: Bai Luyao PipeChina Institute of Science and Technology

Presenting Author Biography: Born in 1986, graduated from Hohai University in China, currently serving as an engineer at PipeChina Institute of Science and Technology, with a research focus on pipeline geological hazard protection. Engaged in research and application of satellite remote sensing in the field of oil and gas pipelines for a long time.

Authors:

Bai Luyao PipeChina Institute of Science and Technology
Li Liangliang PipeChina Institute of Science and Technology
Shi Ning PipeChina Institute of Science and Technology