Warta Geologi, Volume 46, No. 2, August 2020, pp 94-98


Slope stability assessment in opencast quarry – an UAV approach

Nur Emilia Qistina Mohd Anua, Hareyani Zabidi*, Aisyah Shahirah Juhari, Solihin Yaacob, Syaran Suri

Mineral Resources Engineering, School of Materials and Mineral Resources Engineering,
Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malysia
* Corresponding author email: srhareyani.zabidi@usm.my

Abstract: Evaluation on the stability of rock slope is a prime, interesting and formidable aspect in environmental issues. The mechanics of instability depend commonly on nature, strength, and structures of the rock mass. In this research, the structure of rock mass was studied using a technological advanced tool, Unmanned Aerial Vehicle (UAV) to determine the stability of the selected quarry face. To achieve this, photogrammetric mapping and kinematic analysis were carried out consequently at Hume Cement Quarry in Gopeng. The results indicate that the quarry slope has ten (10) major discontinuity sets and there are two (2) possible modes of failure consist of wedge and toppling failure. The UAV approach in determining the stability of rock slope have a lot of advantages and the usage of UAV could be wider as it can be used in many sector.

Keywords: Discontinuities, UAV, photogrammetric mapping, quarry, Kinta Limestone formation

DOI : https://doi.org/10.7186/wg462202009