COMPREHENSIVE GEOTECHNICAL ANALYSIS OF LANDSLIDE RISK FACTORS: INSIGHTS FROM KARO REGENCY, NORTH SUMATERA, INDONESIA
DOI:
https://doi.org/10.32497/wahanats.v29i2.6161Keywords:
disaster, geological vulnerability, slopeAbstract
This study explores geological and geotechnical factors impacting landslide risk in
Karo Regency, Sumatera Utara, Indonesia, a region inherently susceptible to
landslides due to its volcanic terrain. Analyzing seven landslide sites, the research
combines field slope geometry measurements and soil bulk density tests with
detailed laboratory investigations, including Triaxial Unconsolidated Undrained
(Triaxial UU) testing. Findings reveal critical insights into soil behavior, stability,
and variations in shear strength parameters. The Unified Soil Classification System
(USCS) identifies prevalent soil types, dominated by poorly graded sands and
gravelly sands. Triaxial UU testing exposes significant variations in shear strength
parameters, highlighting soil heterogeneity. This comprehensive study contributes to
geotechnical engineering, emphasizing the need for tailored mitigation strategies
and multidisciplinary approaches in effective landslide risk management in Karo
Regency.
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