In a significant advancement for infrastructure safety, researchers have identified potential hazards associated with rock falls at the Tugu Dam spillway in East Java, Indonesia. This study, led by Muhammad Iqbal Hamidi from the Institut Teknologi Bandung, highlights the pressing need for effective protective measures to mitigate risks stemming from slope instability.
The research uncovers critical insights into the geological characteristics of the area, particularly focusing on the rock discontinuities that can lead to rock fall incidents. Using a semi-quantitative approach based on the Rockfall Hazard Rating System (RHRS), the team meticulously assessed the slope at STA+80, where rock cutting operations have raised concerns. “Our findings indicate a total score of 399 on the RHRS, signaling that the slope requires urgent repair,” Hamidi stated, emphasizing the need for immediate action to ensure safety.
The study not only identifies the risk but also delves into the mechanics of potential rock falls. By modeling the trajectory of falling rocks, researchers determined the kinetic energy and velocity of different rock types, revealing that andesite has a significantly higher kinetic energy than volcanic breccia. This data is crucial for understanding how rocks behave when dislodged, which can inform the design of protective systems.
With a projected kinetic energy of 973.14 kJ for andesite and 72.59 kJ for volcanic breccia, the implications for construction and engineering are profound. The proposed protective measure—a retained flexible barrier standing at 5 meters—could be a game-changer for similar infrastructure projects facing geological challenges. “Implementing a robust safety system not only protects the infrastructure but also ensures the safety of workers and the surrounding community,” Hamidi added.
This research is particularly timely as the construction sector increasingly grapples with the impacts of climate change and geological instability. As infrastructure projects expand in vulnerable areas, the need for innovative safety solutions becomes paramount. The findings from this study, published in the ‘Journal of Hydraulic Engineering,’ serve as a critical reminder of the intersection between geology and construction safety, urging industry stakeholders to prioritize risk assessments and protective measures in their planning processes.
By addressing these hazards proactively, the construction industry can not only safeguard its projects but also enhance public trust and investment in infrastructure development. The implications of Hamidi’s research extend far beyond the Tugu Dam; they set a precedent for future developments in risk management strategies across the sector.