Dredging: Trailing Suction Hopper Dredgers - How does it work?
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- เผยแพร่เมื่อ 16 ม.ค. 2018
- Trailing suction hopper dredgers can fill their own holds (hoppers) by sucking material from the seabed using a trailing suction head fitted to pipes that trail over the bed as the ship sails. Trailing suction hopper dredgers can operate independently of other equipment and are able to transport the dredged material over long distances. The material can then be deposited through hatches in the bottom of the ship or by rainbowing. It can also be pumped ashore through a pipeline for land reclamation.
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Perfectly explained , good work to whoever made the video
Absolutely incredible!
Excellent... Nice Animation
Impressive machine.
Very versatile vessel.
Very interesting !
Multipurposes style vessel...superb 👍
Really helpfull
really fun to watch
Great jobs
Amazing!
wow . . .amazing. .
Been on one of those. A LOT OF PIPES
how does it pump all that water with sand? does it insert air to create a waterflow, or does it create a vacuum chamber?
"the vessel can discharge it's load in various ways" hehe. heheeh
(chuckles like Beavis & Butt-Head)
good video
Wow, mantap
Good
Serious question…where do the shells go? Is there a strainer for them or do they just get pumped out with the rest of the sand?
Dear Audrey, the shells get out with the dredged sand.
@@renekolman4193 thank you!
How to join on board ?
@IADC Dredging (International Association of Dredging Companies) how powerful is the suction on a TSHD
Dear Rhona,
The suction power of a TSHD depends on the power of the dredging pump, which relates to the size of the vessel. The larger the vessel, the more powerful is the dredge pump. IADC publishes vessel data on its website. Amongst the data is the power the dredge pump: www.iadc-dredging.com/publication/iadc-fleet-list-2021-2/
@IADC Dredging (International Association of Dredging Companies)how much does one suction pipe on TSHD weigh
This depends on several factors: diameter of the suction pipe, size draghead, presence of an underwater pump.
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'If it ain't dutch, it ain't much '
What diameter rocks will it handle
In general a TSHD is not used for dredging rock. Occasionally it can handle larger pieces of rock as long as they can pass the dredge pump.
In the Melbourne channel deepening project, equipment was specially designed to dredge rock. See www.iadc-dredging.com/article/port-melbourne-environment/
Are these DP ?
How much cost to clean a river basin (Like per kilometer )?
Dear Zillur,
The answer on your question depends on many factors. To name a few:
• Depth and with of the river
• Discharge of the river
• Level of contamination
• Material to be dredged
• Available equipment.
All these and other factors determine the costs of the dredging project. A straight answer can’t be given.
😊
does this work well for fine grained material?
Yes, they can dredge sands, clays, silt or gravel.
@@IADCDredging1 how much do these ships cost?
@@bruhmania7359 the initial cost of a standardised TSHD starts with around EUR 8 million
Lot of your company vessels Ship working as repairs projects Supervisor docking
Can obaama son operate this?
lekki deep sea port must have had a similar process
How much for small side under 4000 m3 ( produced 1990-2000)
Nothing like getting a load off
I just don't understand why we are not re-cutting all the inland water ways from side-ditches, creeks, rivers, ponds, etc. Water displacement to ease flooding, rising waters, etc. Now run it though a gold sluice, what the hell
Same
Super expensive and a lot of custom small scale stuff.
The sand from the rivers is toxic and needs to be cleaned before using somewhere else.
Ke yona dredging ya lona ena
Distruction of the marine ecology.
The wire bought me here
Hahaha I just saw a crab get wiped out by one of these babies 😂
How to become a dredge operator?
Please visit our website for more information on how to become a dredge operator: www.iadc-dredging.com/subject/working-in-the-dredging-industry/careers-dredging/
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Can we get one to go way out to sea, scoop up a ton of sand and rebuild the beaches we're losing in Hawaii?
It won't be as fine sand it'll be stoney
@@siZeDcuBe shootz.
and then keep doing that every 5 years?
pacific around hawai is to deep to dredge up the sand
What about all the life on the sea bed? What very nice!
I believe there is some kind of coordination so ship do start dredging in an area that's too densely populated near the seabed
@@russellgxy2905 they should have designated areas where they are allowed to dredge, yes. And those are monitored
When the life on the seabed hears/feels the vibrations from the machinery they will get the hell out of the way in a fast hurry, all of these people who want " designated zones" to do this and that and have them monitored.....such bullshit, that's why only big companies are the only ones who can get anything done....too much red tape for the small guy....stupid fucking rule and regulations..
What if it's rocky? Not sandy
Up to a certain level of rockiness, it can be dredged with a modified draghead. This so-called ripper draghead has been described in Terra et Aqua 118. When it is too rocky a Cutter Suction Dredger is necessary.
Is it need to mine In the ocean wildlife in the sea are disturbed some must die.The sand is release in the rainbow process that turbid the water that may disturb the migrating marine animals.
Inland waterways dredger is not working like this..
Conveyor cost lesser to pumping.
No the distance you can pump is miles longer.
You need like a 100 conveyors.
Where are the fish when all this is happening?
At Work, Shopping or on their way to P. Sherman, Wallabyway in Sydney 🌚
Whos here after seeing the post ko Twitter
Surely this comes with some serious ecological effects? That’s a hell of a lot of energy consumption and disturbance no?
Fascinating technology! Not fascinating destruction to the wildlife on the sea floor!
Can it really be that bad if they are just sucking up sand?
@@JoshB333 No, but its sucking up a hell of a lot more than sand.
@@JoshB333 It's not just sand... oceans are teeming with life. It looks brown, but it's plants, plankton, fungi, bacteria, protozoa, animals, minerals, all part of the microscopic ecosystem that support wildlife higher and higher on the food chain, and eventually humans. There are a lot of living organisms and essential components of the seas thriving in that "sand" that took millions and millions of years to create that perfect balance, of which is disrupted.
@@misskai8158 Surely they will settle once the sand has gone
@@misskai8158 It's a strait, not ocean. A strait only have small amount of organisms and not as diverse as compared to ocean. And after a dredging, these small organisms count will eventually recover because these organisms is not as complicated as a mammalia
Bad for the Environment
How do you protect sea animals from getting sucked into the dredger? Seems environmentally irresponsible.
Dear Bamboo Blue, Please have a look at www.iadc-dredging.com/wp-content/uploads/2017/02/article-faunaguard-a-scientific-method-for-deterring-marine-fauna-aqua-138-2.pdf
A draft PIANC report says:
Impact - Entrainment and/or impingement of species:
• Deterrent - acoustic or different,
• Exclusion - catch by trawling/hand caught and displace, screens at draghead, water intake (see email Wayne, dredging equipment (WID, TSHD, ..??); tickler chains (Brisbane Port video, Dredging industry), turtle deflector (US ACE), bubble screens to close of a basin,
• Construction management: choice of equipment, pump procedure (jet pumps on before lowering drag head (deterring mechanism), then dredge pump on and reverse while raising), temporal windows, observers (visual or by sonar), avoidance of high spots for refuge (aka turtle chill out areas, dude),
They have safeguards on the suction heads. I worked on one with the Army Corps Of Engineers.
the worst thing ever. shame.
Bad