论文部分内容阅读
The China-Pakistan Economic Corridor（CPEC）is a corridor composed of roads,railways,oil and gas pipelines,optical cables and power lines.The corridor is extended from the north of Kashgar in China to the south of Gwadar Port in Pakistan.CPEC considering the vast area covered project which significantly important to take into account due to its diverse natue,especially natural environment,complex geological conditions,frequent seismic activity and extremely poor regional stability.The landslide natural disasters is one of the major constrain due to widespread mountains in the area which seriously threaten the success of the CPEC and the safety of people’s lives.In this study,landslide susceptibility evaluation using（AHP）weighted overlay model,and weighted information model.Elevation,slope,topographic relief,seismic density,rainfall distribution,distance from the fault,aspect,geology,distance from the river,and distance from the road were considered the drivers of landslide disaster.Then,（ROC）curve was used to evaluate the performance of models to identify more suitable model for the study area susceptible division.The results reviled that landslides are likely to induce geo-hazards in range of elevation between 2660 m and 3470 m above the sea level,slopes between 29°and 350°,terrain relief between 45 m and 70 m,density of the earthquake between 2 and 4 per 102km2,multi-year average rainfall between 430 mm and 530 mm,distance from the fault is less than 5 km,the distance from the river is less than 2 km,and the distance from the road is also less than 2 km likely to induce the landslide.The landslide points of field investigation were used to verify the models results.The susceptibility accuracy of geo-hazards in CPEC based on the weighted information model and AHP overlay model was 0.886 and 0.817 respectively.The results showed 33.6%,29.2%,22.3%,and 14.9%of the total area is extremely susceptible,high susceptible,low susceptible and extremely low susceptible area respectively.The results of the study are expected to provide the scientific foundation for major project design,traffic route selection,urban planning,and other aspects of the CPEC that will benefit safety of regional people’s livelihood and long-term development.