ASSESSMENT OF LANDSLIDE VULNERABILITY REGARDING TNB ASSETS IN BUKIT ANTARABANGSA

Abstract

The assessment of vulnerability to landslides is crucial for effective risk management, especially for infrastructure and human lives. This study aims to evaluate the vulnerability of landslides toward Tenaga Nasional Berhad (TNB) assets in Bukit Antarabangsa, an area known for susceptibility to slope and landslide failures. The TNB assets include substations and pylon towers. Substations were selected based on their proximity to slopes and a landslide inventory within a 50-meter distance. The study uses an Indicator-Based Method (IBM) to quantify the vulnerability level, allowing for a systematic and comprehensive analysis. The IBM involves selecting and assessing key indicators that reflect the physical aspects of vulnerability. These indicators are grouped into clusters, each corresponding to specific indicators and sub-indicators, and then integrated into a geospatial model for the vulnerability assessment. The Bukit Antarabangsa assessment revealed that the Athenaeum Condo substation exhibits very high vulnerability to landslides, while the entire pylon tower generally demonstrates a lower vulnerability level. This assessment provides TNB with critical information to make informed decisions, implement mitigation measures, and prioritize actions to minimize potential risks and maintain service reliability. The study's significance lies in its valuable contribution to infrastructure safety against landslides, safeguarding communities, and ensuring the continuity of essential utilities during natural disasters.