Which type of blade is commonly used for backfilling in excavation operations?

The type of blade commonly used for backfilling in excavation operations is the A blade. This blade design is specifically tailored for versatility and efficiency when it comes to moving large amounts of material. Its shape allows for effective scraping, leveling, and packing of soil, which are key functions in backfilling.

When using an A blade, operators can achieve better control over the material being moved, facilitating more precision in leveling and ensuring that the soil is compacted properly. This is essential for creating a stable base and preventing future settling, which can lead to structural issues.

In contrast, while other blade types such as angled, straight, or V-shaped blades have their specific applications within the excavation process, they may not provide the same level of effectiveness for backfilling. Angled blades might be more suited for shaping and cutting, straight blades for pushing material, and V-shaped blades for specific trenching actions, but none match the multifaceted benefits of an A blade for the backfilling task.