Engenharia

Chapter 4 Plain Suction Dredgers

4.

The Plain Suction Dredger ...........................................................................................2 4.1 General considerations ........................................................................................2 4.2 Areas of application ............................................................................................3 4.3 Types of plain suction dredgers ..........................................................................3 4.4 History.................................................................................................................5 4.5 Working method .................................................................................................6 4.6 The design ...........................................................................................................8 4.6.1 The production capacity.............................................................................9 4.6.2 The suction depth.......................................................................................10 4.6.3 The transport distance ................................................................................12 4.6.4 The dredging installation ...........................................................................12 4.6.4.1 Suction and discharge pipe diameter .....................................................12 4.6.5 The dredge pump .......................................................................................13 4.6.5.1 Pump types..........................................................................................13 4.6.5.2 The sand pump drives .........................................................................14 4.6.6 Jetpumps ....................................................................................................14 4.6.6.1 Pump type ...........................................................................................14 4.6.6.2 Jetpump