Tao Xingyu, Liu Jinbao, Huang Zhigang, et al. Zoning of Highway Geological Hazard Susceptibility and Meteorological Forecast Model in Linzhi City[J]. Bulletin of Soiland Water Conservation, 2022, 42(2): 195-202.
DOI:
Tao Xingyu, Liu Jinbao, Huang Zhigang, et al. Zoning of Highway Geological Hazard Susceptibility and Meteorological Forecast Model in Linzhi City[J]. Bulletin of Soiland Water Conservation, 2022, 42(2): 195-202. DOI: 10.13961/j.cnki.stbctb.2022.02.027.
Zoning of Highway Geological Hazard Susceptibility and Meteorological Forecast Model in Linzhi City
[Objective] The susceptibility zoning and meteorological forecast model of highway geological hazards were studied in order to provide a theoretical basis for implementing the meteorological forecast of geological hazards along the highways in Linzhi City
Tebit Autonomous Region. [Methods] Firstly
eight zoning factors
including fault density
soil type
slope
valley density
annual precipitation
land use
bare rock ratio and distance from rivers
were selected in the 15 km buffer zone along the highway in Linzhi City. The coefficients of each zoning factor were determined by the information and logistic regression method
and the zoning model of geological hazard susceptibility was obtained. Secondly
based on the daily precipitation data of the rainfall occurrence day
the first day
the second and and the third day before the landslide hazards
a meteorological forecast model of geological hazards was established by using logistic regression method. [Results] The susceptibility of most areas in the 15 km buffer zone along the highway in Linzhi City was less than 0.4
and the closer to the road
the greater probability of geological hazard susceptibility. The accuracy rate of the model was 85.71%
and the failure rate was 14.29%. [Conclusion] Affected by topography
geomorphology and precipitation data
the prediction results of the established model may deviate from the actual situation
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