Comparative advantages of minimally invasive methods in sewer networks

Abstract

Although they have proven adverse impacts on urban fabric and ecosystems, conventional open-pit excavation techniques still predominate in the implementation of sanitary sewage networks. This study evaluates the viability of non-destructive techniques (NDTs) as a sustainable alternative, comparing them to traditional methods in critical parameters: execution time and environmental impacts. The analysis focused on an 89-meter stretch and demonstrated the operational and ecological superiority of NDTs, with a 38.6% reduction in construction time (17 days less) and 62% lower atmospheric emissions (quantified using the Ringelmann Scale). The results reveal decisive technical advantages: (1) less urban interference, (2) accelerated operational efficiency and (3) proven environmental sustainability. It is concluded that NDTs represent the technically optimized solution for sanitary infrastructure projects in urban areas, combining economic, social and ecological gains. The methodology applied, including direct comparative analysis and standardized emissions assessment, validates their adoption in similar contexts.