Geology and slope stability assessment using Gis of federal route 185 At Km 98 -104, Lojing, Gua Musang, Kelantan

Slope failure is known as one of the global unexpected natural disaster which cause to loss of life and massive economic declination in certain countries and become one of the major natural disasters in Malaysia. The Cameron Highland slope failure and the landslide in Genting Sempah are examples to name a few. There is obviously a need to establish hazard and risk maps for major highway route particularly in the Lojing area where rich into hilly and mountainous terrain. This study focuses on construction of slope stability assessment along Km 98-104 of Federal Route 185 by using data processing in a Geographical Information System (GIS). The technological advancement of ArcGIS software 10.2 has made it possible to map geological lineaments, geomorphological features, lithology and contour pattern contributing to high slope failure hazard. In this study, the thematic maps used are including lithology map, elevation map and slope degree map. Each of the thematic maps are classified according to their own specific rating scheme of slope failure hazard evaluation factor. This rating scheme is based on the major of inherent causative factor of slope stability that include the lithology, slope and elevation. These parameters are considered to contribute the potential or failure of the landslide. The data need to be transferred into raster data which will followed into specific weightage. The result are obtain from the overlaying of different maps which will form the combination of data. The summation of these parameters is used to obtain the suitability value to determine the possible location to have the landslide in study area.