Different types of soil have varying degrees of wear on dredging facility, and the forms of wear on different types of dredging facility are also different.
In the practice of studying and exploring the effect of dredging soil on the wear of dredging facility, it is recognized that the physical and mechanical properties of dredging soil should be the main focus. Generally, the particle size and hardness of soil particles are crucial for the wear of dredging facility, with gravel being the most prominent factor, followed by gravel, sand, loose soil, and muddy soil, and decreasing accordingly.
In the study of the particle size of sandy soil, it was found that in general, poorly graded polygonal coarse particles (coarse sand particle size greater than 2mm) have the most severe wear on dredging facility.
Other factors that cause wear and tear on facility are the speed at which mud passes through the pipeline. The wear of pipeline elbows is greater than that of mud pipes. The reason for this is that the local yang force of the mud causes wear and tear on the dredging facility by the dredging soil. The wear and tear on different types of dredgers also vary in location and form.
The worn parts of the self-propelled rake suction dredger are manifested in facility such as the rake head, mud pump (including impeller, lining plate, pump shell), suction and discharge pipes, and mud chute inside the mud tank; The worn parts of the cutter suction dredger are manifested in facility such as the cutter, mud pump (impeller, lining plate, and pump casing), suction and discharge pipes (including water and land discharge pipelines), etc; The wear and tear of chain bucket dredgers are manifested in facility such as mud buckets, bucket edges, and mud chutes; The wear and tear of the grab and bucket dredger are mainly manifested in the bucket body and other facility.
The degree of wear and tear of dredged soil on different types of dredger facility also varies. The wear and tear on the cutter suction dredger is the most severe, and the other dredgers are arranged in the order of self-propelled rake suction dredger, chain bucket dredger, and grab and bucket dredger.
