2026 equipment operating hours relative to the conventional alternative, contributing to lower diesel consumption during construction and subsequent maintenance cycles. Overall, the conventional design concentrated emissions in aggregate extraction and hauling activities, whereas the reinforced configuration reduced these dominant contributors by lowering material volumes and transport intensity while maintaining operational performance. 5.2 Carbon Emission Results The comparative assessment resulted in the following total greenhouse gas emissions for the evaluated 1,000 m haul road segment (20,000 m²): Figure 11 – Comparative greenhouse gas emissions for the evaluated haul road segment, showing reduced material- and transport-related emissions in the reinforced configuration The reinforced configuration reduced total emissions by 395.8 tCO₂-eq, corresponding to a 30.7% decrease relative to the conventional thickness-based design. The difference is primarily associated with reduced aggregate extraction, lower hauling demand, and decreased equipment operating hours resulting from the optimized structural configuration. As demonstrated in Figure 11, material production and transport represented the dominant emission sources in the conventional structure, while the reinforced solution reduced these contributions through lower material intensity. Importantly, the emissions reduction was achieved without the introduction of additional complex construction processes. Instead, it resulted from improved structural efficiency, enabling equivalent functional performance with lower aggregate volumes and reduced transport effort. These findings indicate that mechanical stabilization strategies can provide measurable environmental benefits when applied to high-volume infrastructure elements such as mining haul roads. 5.3 Interpretation for Mining Operations From an operational perspective, the emissions reduction observed in the reinforced configuration is primarily a consequence of lower material intensity and reduced transport demand. By replacing massbased structural support with mechanical stabilization, the haul road achieves equivalent functional performance with significantly less aggregate extraction and hauling effort. This reduction in material movement translates directly into lower fuel consumption, fewer equipment operating hours, and decreased exposure to repetitive reconstruction cycles. For large-scale mining operations, where haul roads represent high-volume infrastructure elements, such efficiency gains can have cumulative operational and environmental significance.
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