基于SBAS-InSAR技术的小龙潭露天矿地表形变监测

SURFACE DEFORMATION MONITORING OF XIAOLONGTAN OPEN-PIT MINE BASED ON SBAS-INSAR TECHNOLOGY

以云南小龙潭露天采煤引起地表形变引发地质灾害为例,开展矿区形变监测和地质灾害隐患监测示范研究,对2023年4月至2023年12月21景Sentinel-1A遥感影像利用SBAS-InSAR技术处理。结果表明:露天采场东南帮和北平坝排土场中央偏南区域形变明显,监测采样点D12、E1、IE2形变速率-43.57mm/a、-159.07mm/a和-166.49mm/a,累积形变量-24.6mm、-104.3mm和-115.2mm,监测结果与实地形变趋势一致。SBAS-InSAR技术可及时精准发现和识别矿区边坡灾害集中区,为矿山提供地质灾害工程防治信息。具有借鉴价值和推广应用前景。

Taking the geological hazards caused by surface deformation caused by open-pit coal mining in Xiaolongtan,Yunnan as an example,the demonstration research on deformation and geological hazard monitoring in the mining area were carried out.The 21 Sentinel-1A remote sensing images from April 2023 to December 2023 were processed by using SBAS-InSAR technology.The results show that the deformation of the southeast side of the open pit and the central south area of Beipingba dump is obvious.The deformation rates of monitoring sampling points D12,E1 and IE2 are-43.57 mm/a,-159.07 mm/a,and-166.49 mm/a,respectively,andthe cumulative deformation of them are-24.6 mm,-104.3 mm,and-115.2 mm,respectively.The monitoring results are consistent with the field deformation trend.The slope disaster concentration area in the mining area could be timely and accurately discovered and identified by using the SBAS-InSAR technology,so that provide prevention and control information for geological disaster engineering.This method has reference value and application prospect.