[Objective]The fault structure along the Lu(ding)Shi(main)highway has developed,and earth-quakes are frequent,resulting in a large number and large scale of historical earthquake-induced landslides in the region.However,a large amount of vegetation grows on the surface of these seismic landslides,and it is difficult for traditional surveys to efficiently identify the distribution location and development law of earthquake landslides.[Methods]To reduce the safety hazards caused by earthquake landslides during highway construction,this paper first identifies earthquake landslides with high-precision airborne LiDAR data and verifies the accuracy of identifica-tion through field review.Second,high-precision airborne LiDAR images are used to analyse the deformation char-acteristics of seismic landslides.Finally,the spatial distribution characteristics of the seismic landslides are analysed by comprehensively considering the three major factors(6 factors)of topography,geology and earthquakes.[Re-sults]The results show that airborne LiDAR technology can be used to effectively detect seismic landslides under vegetation layers.A total of 23 seismic landslides are identified along the Lushi Expressway Common Road,and the accuracy of field review and verification is 100％.By analysing the six factors controlling the spatial distribution of seismic landslides,it is concluded that the correlations with fault structure and earthquakes are the highest.[Con-clusion]The research results provide a reference for landslide identification and investigations of expressways with dense vegetation and provide data support for landslide disaster prevention and risk assessment of the Lushi Express-way.
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万方数据