Sveta Petka, Sopište

The access road to the Sveta Petka dam presents a significant rockfall hazard, primarily due to steep rock cuts made in marble limestone combined with intense tectonic activity in the area. These geological conditions frequently cause rock movements and rockfalls onto the road, endangering vehicles and construction workers. An analysis conducted using the Rockfall Hazard Rating System (RHRS) identified multiple sections along the road that require urgent remedial measures. The study revealed that reducing the speed limit could substantially influence the hazard level, indicating that slower traffic speeds correlate with an increased risk of rockfall accidents. Suggested protective measures include removing unstable rock blocks, installing rockfall barriers and anchors, reinforcing slopes with shotcrete, and constructing concrete galleries or supports in the most hazardous zones. Ongoing monitoring through an annual stabilization program was recommended to maintain road safety effectively.^[3]