GB/T 39656-2020Technical requirements for dredging system design of self-propelled trailing suction hopper dredger (English PDF)

1 Scope

This standard specifies the design basis, design requirements, technical documents and design verification of the dredging system of a self-propelled trailing suction dredger:

This standard applies to the design, manufacture and transformation of dredging systems for self-propelled trailing suction dredgers:

2 Normative references

The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article

Pieces: For undated references, the latest version (including all amendments) applies to this document:

GB/T 17843 Terminology for ships and marine technical dredgers

GB/T 29135 Dredging Monitoring System for Trailing Suction Dredger

Rules for Classification of Sea-going Steel Ships, China Classification Society

Code for construction of steel inland water vessels, China Classification Society

Code for the construction of domestic ships, China Classification Society

Rules for the classification of domestic ships, China Classification Society

Technical Regulations for Statutory Inspection of Sea-going Ships in International Navigation, Maritime Safety Administration

Technical Rules for Statutory Inspection of Domestic Ships, Maritime Safety Administration

Technical Rules for Statutory Inspection of Inland Water Vessels, Maritime Safety Administration of the People's Republic of China

3 Terms and definitions

The following terms and definitions defined in GB/T 17843 apply to this document:

3:1

Maximum operating draft maxdredgingdraught

The full-load draft of a self-propelled trailing suction dredger during dredging operations:

3:2

Dredgingspeed

The speed of a self-propelled trailing suction dredger relative to the ground during dredging operations:

Note: The unit is knot (knot):

3:3

Activedraghead

The angle of the movable cover of the drag head relative to the fixed body can be adjusted in real time:

3:4

Undisturbed soil

Soil that maintains natural structure and moisture content:

3:5

Glandwater

Pressure water used to prevent wear of mud pump suction end and shaft end: