Geology and rock slope stability analysis on moderately weathered rock of Gunung Ayam, Gua Musang

Gunung Ayam is one of the landforms that undergoes the tectonic uplifting through the Bentong-Raub Suture Zone in the middle of Peninsular Malaysia. The research area located at between the latitudes (N 04°48'0" to N 04'50'0") and longitudes (E101° 41'0" to E101°43'0") where it’s located at Southwest Kelantan. The primary objective of this research is to update the geological map of the Lojing District. Another objective is analysed slope stability of Gunung Ayam on weathered rock. The last objective is determining the factor of safety slope for the future development. The lithologies of research area is comprised of three types conglomerate unit, quartzite unit and mica schist units. Within this research the structural geology is a wavy fold, chevron fold, foliation, thrust fault and fault scarp. Rock slope 1 present a conglomerate rock and rock slope 2 represent quartzite rock. The engineering geology part of research by using the Rock Mass Rating (RMR) systems and kinematic analysis showed the result of rock slope stability is rock slope 1 is more stable than the rock slope 2. The kinematic analysis showed rock slope 1 tend to failure in toppling failure than wedge failure. Rock slope 2 more tend to wedge failure than toppling failure. Point load test on weathered rock, rock slope 2 is strongest than rock slope 1.