Stability analysis of goaf in coal mine based on InSAR technology
HAN Ke
Abstract：In view of the characteristics of slow subsidence and deformation,long deformation period,and strong disaster threat caused by collapse in the hanging goaf of Shenmu Coal Mine,taking the typical shallow coal seam mining in Shenbei Mining Area as an example,based on the synthetic aperture radar(SAR)remote sensing monitoring rapid scanning settlement deformation analys-is technology is mainly adopted,supported by fine exploration technologies such as drilling,peeping through the hole and lidar scan-ning through the hole.The long-term accurate monitoring and stability analysis of the surface deformation of large hanging roof goaf in coal mine are realized.The results show that:the maximum cumulative deformation amount of the mine is about-200 mm in the northern concentrated deformation area from December 2006 to January 2011,about-140 mm in the three central concentrated de-formation areas from December 2014 to July 2015,and about-970 mm in the three concentrated deformation areas from July 2015 to July 2023.The surface deformation in the north of the mine field is mainly due to the goaf collapse of coal 2-2,the control of sur-face fire area and the influence of coal 3-1 mining,while the surface deformation in the south is mainly due to the subsidence and compaction of backfill layer in the control of surface fire area.In the south of the mine field,the 3-1 coal strip type hanging roof goaf is generally stable.
Keywords：interferometric synthetic aperture radar(InSAR)surface deformation monitoringhanging roofgob subsidencehid-den disaster factorsfine exploration
Publication Date：2025-12-20
Online Publishing Date：2025-12-29(First online date of this platform, not the publication date of the document)
Pages：13( 128-140 )