Susceptibility Analysis of Land Subsidence along the Transmission Line in the Salt Lake Area Based on Remote Sensing Interpretation

As the influence of extreme climate and human engineering activities intensifies, land subsidence frequently occurs in Salt Lake area Qinghai Province, China, which seriously threatens stability UHV transmission line crossing area. Current susceptibility analyses disasters have mostly focused on classification ignored differentiation among different intensities. Therefore, map does not meet operation maintenance management needs line, let alone planning designing new lines this study, we proposed a analysis intensities along The small baseline integrated aperture radar interferometry (SBAS-InSAR) method was used to obtain based 67 Sentinel-1 remote sensing interpretation datasets from 2017 2021. Based combination K-means clustering specifications, four annual intensity grades were identified as 0~−2 mm/year, −2~−10 −10~−20 <−20 mm/year. In addition, eight geological environmental factors analyzed, multi-layer perceptron neural network (MLPNN) model calculate under curve (AUC) practical examples verify reliability mapping. AUC values showed that results accurate: mm/year grade produced largest (0.951), with producing AUCs 0.926, 0.812, 0.879, respectively. At same time, consistent site tower deformation. study provided distribution distinguished intensities, more detailed information for each tower. provide important planning, design, protection, management.