Landslide Risk Assessment on the Corridors of Transmission Lines

Abstract

The corridor of a transmission line is a typical point-line channel, which has the difference of disaster relief and post-disaster impact with the road. Landslide risk assessment on the corridors of transmission lines must be considered in two aspects: the line characteristic and local geological structure. Based on the danger of the landslide and the vulnerability of transmission tower, index system is established to assess landslide risk with the corridor of a 500 kV double-circuit transmission lines for example. According to index system, landslide risk distribution is obtained to draw the corridor risk map of this double-circuit transmission line. High risk accounts for 16.98 %, and relatively high accounts for 20.75%. The results have strongly consistent with the that of field survey. The method can provide the technical support for landslide treatment of transmission corridor