Landslide susceptibility mapping using sinmap method in a small hilly area: case study in Cibanteng Village, West Java

Padjadjaran Earth Dialogues, International Symposium on Geophysical Issues

Affandani, A.Y.^1 ; Kusratmoko, E.^1

Departement of Geography, Universitas Indonesia, Jl. Margonda Raya, Pondok Cina, Beji, Depok

16424, Indonesia^1

关键词: Contributing areas;    Digital elevation model;    Digital topographic maps;    Effective rainfall;    Internal friction angle;    Landslide susceptibility;    Landslide susceptibility mapping;    Physically based modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/311/1/012027/pdf
DOI  :  10.1088/1755-1315/311/1/012027

来源: IOP

【 摘 要 】

This paper presents the results of landslide susceptibility mapping in small hilly areas, Cibanteng village, Cianjur district, West Java. In this study. the physically-based model SINMAP (Stability Index Mapping) was applied in the GIS platform. The SINMAP model simulation requires data of physical properties of soil, such as cohesion value, internal friction angle, and soil hydrology to calculate the value of factor of safety (FS). The values of cohesion and fraction angel for the 10 sample points were obtained from the laboratory test results, while the value of soil hydrology, i.e hydraulic conductivity, transmissivity, effective rainfall and index wetness, referred to the literature source. The DEM (digital elevation model) was generated from the 1:25,000 digital topographic map, which produced the soil slopes and specific upstream contributing areas. The result of SINMAP model simulation shown that the regions with a high landslide susceptibility (FS