What type of ground is considered hazardous for hydraulic excavators?

Saturated or muddy ground poses significant hazards for hydraulic excavators due to several factors. When the ground is saturated, it becomes unstable, which increases the risk of the excavator tipping over or losing traction. Muddy conditions can lead the machine to sink or become bogged down, making it difficult to maneuver and operate effectively. Additionally, saturated soil can impede the excavator's ability to stabilize, compromising the safety of the operator and the integrity of the equipment.

In contrast, while rocky terrain and sandy soils present their own challenges, such as increased wear on equipment or difficulty in excavation, they generally do not lead to the same level of instability that saturated or muddy ground does. Flat surfaces, while ideal for operation, do not introduce the risk factors associated with poor drainage or soil cohesion found in muddy conditions. Thus, muddy or saturated ground is uniquely hazardous for hydraulic excavators.