Volume 8 – Mechanical and Electrical Services - Malaysia Geoportal
Volume 8 – Mechanical and Electrical Services - Malaysia Geoportal
Volume 8 – Mechanical and Electrical Services - Malaysia Geoportal
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Types of dredging equipment <strong>and</strong> characteristics<br />
Chapter 8 DREDGER<br />
Table 8.2 Types of Dredging Equipment <strong>and</strong> Characteristics<br />
Type of<br />
Equipment<br />
Operating<br />
Conditions<br />
Min water<br />
depths, m<br />
Max water<br />
depths, m<br />
Add. Features /<br />
characteristics<br />
Capacity,<br />
m 3<br />
Trailing<br />
suction<br />
hopper<br />
dredge<br />
Cutter suction<br />
dredge <strong>and</strong><br />
suction<br />
dredge<br />
Hydraulic<br />
unloader<br />
Barges /<br />
scows<br />
Spider /<br />
Bardge<br />
Pipeline<br />
Booster pump<br />
stations<br />
Can operate in<br />
rough seas<br />
Light to<br />
moderate sea<br />
conditions<br />
(H=1m)<br />
Operates in<br />
sheltered areas<br />
Operates in<br />
sheltered areas<br />
15-30 100 Bottom placement 100,000 <strong>–</strong><br />
500, 000 /<br />
week<br />
25 60-80 Discharge of material<br />
through pipeline or<br />
loading onto barge<br />
- - Hydraulically<br />
removes sediment<br />
from barges filled at<br />
other location<br />
- - Can be loaded or<br />
unloaded bottom<br />
placement<br />
- - Loads barges from<br />
hydraulic dredge<br />
- - L<strong>and</strong> pipeline offers<br />
flexibility for material<br />
placement<br />
Operates in<br />
sheltered areas<br />
Sensitive to<br />
wave action <strong>and</strong><br />
strong currents<br />
- - - Use when insufficient<br />
power of main pump<br />
for pumping material<br />
long distances<br />
Fixed systems - - - Permanent pump<br />
stations set in s<strong>and</strong><br />
traps<br />
Trucks - - - Economic only if<br />
distance is short <strong>and</strong><br />
quantity is small <strong>and</strong><br />
if roads are available<br />
to beach<br />
50,000 <strong>–</strong><br />
500, 000 /<br />
week<br />
-<br />
300 <strong>–</strong> 4,<br />
000 /<br />
week<br />
-<br />
-<br />
-<br />
-<br />
50, 000 /<br />
week<br />
March 2009 8-7
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