What is the main principle of controlling erosion on utility projects?

The main principle of controlling erosion on utility projects is to stabilize the trench as soon as possible. When a trench is dug for utility installation, it creates an open area that is vulnerable to erosion. Rainfall and surface runoff can easily mobilize soil from the trench and surrounding areas, leading to the potential for significant soil loss, sedimentation into water bodies, and damage to the surrounding ecosystem.

By stabilizing the trench quickly, measures can be put in place to reduce the risk of erosion. This can involve backfilling the trench promptly, applying erosion control blankets, or planting vegetation to anchor the soil effectively. Quick stabilization not only protects the excavated area but also minimizes the impact on adjacent lands and water bodies, aiding in overall environmental protection.

The other options do not effectively contribute to erosion control. Reducing the number of workers does not impact erosion directly, maximizing excavation depth can increase the erosion risk, and leaving the trench open for multiple days can exacerbate erosion issues. Therefore, prompt stabilization is essential in managing erosion on utility projects.