Introduction to Sand Dredging Equipment

Chapter 1 Introduction

1. Introduction to Dredging Equipment
1.

Introduction to Dredging Equipment .......................................................................... 1
1.1.
Introduction ......................................................................................................... 1
1.2.
Types of dredging equipment ............................................................................. 2
1.3.
Mechanical dredgers ........................................................................................... 3
1.3.1.
The bucket ladder dredge ................................................................................ 3
1.3.1.1.
General ........................................................................................................ 3
1.3.1.2.
Working method ......................................................................................... 5
1.3.1.3.
Area of application ...................................................................................... 6
1.3.2.
Grab or Clamshell dredger .............................................................................. 7
1.3.2.1.
General ........................................................................................................ 7
1.3.2.2.
Working method ......................................................................................... 7
1.3.2.3.
Area of application ...................................................................................... 9
1.3.3.
Hydraulic cranes (Backhoe and front shovel) ............................................... 10
1.3.3.1.
Working method ....................................................................................... 11
1.3.3.2.
Area of application .................................................................................... 12
1.4.
Hydraulic dredgers ............................................................................................ 13
1.4.1.
Plain suction