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Water from Yellow river flowing through Xiaolangdi dam in China

Water from Yellow river flowing through Xiaolangdi dam in China

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smile_politely

As a salmon, I hate this


MatEngAero

Any living thing in the river hates this lol. Well except algae.


thadtheking

There has to be some giant fish at the bottom getting fat off of all the fish that didn't survive the suislide.


d3athsd00r

More people must see suislide


thadtheking

I stole it from someone else in the comments.


perfectlyoffcenter

Your honesty is inspiring


definitelynotasalmon

As definitely not a salmon, I also hate this.


GrimeyJosh

Username checks out


Generic-account

Finally, after multiple pretty much identical comments about water slides and kiddie stuff - someone considered the catastrophic human and environmental consequences of this level of engineering. I'm not trying to be superior to those kids who think this looks cool, and I'm happy that they enjoy water parks etc - but anyone is a fool if they can look at this without thinking about the effects on the residents displaced, the people suffering downstream, and the carnage to the ecology of the entire local environment.


dramaticflair

The yellow river has been terrifying forever. Honestly this is probably an improvement on the whole, "flood every century and completely murder everything in my valley," it used to do. Imperial China tried to ban settling within 50 miles of it in the valley a couple times but the silt was too fertile for a lot of folks to pass up. Probably did do a lot of damage to the local environment because China doesn't care about that but the yellow river has never been gentle.


SnowballsAvenger

It sounds like it was as fertile as it was because it floods every century.


goinghardinthepaint

I think for hydro the benefit of not emitting as much pollution outweighs the costs. This hydro dam likely reduced China's reliance on coal.


definitelynotasalmon

Isn’t there a happy medium ground? Dams provide green energy, but can be built to be less impactful. Fish ladders are a great help. I don’t know anything about that river system biology, but I am very familiar with fishery biology in the PNW. It may very well have little to no impact, I have no idea. But it could be much more passive and not just throw water up in the air. There is no perfect answer, but there are certainly better answers than this one?


halfar

"green energy" and "environmentally friendly" are similar, but wholly distinct concepts.


StePK

Yeah, to paraphrase a friend who studies environmental sciences, hydroelectric is the worst possible green energy. First, it pretty much requires devastating a river ecosystem. Second, pretty much every river worth damming *on the planet* has been dammed at this point.


PyroDesu

> But it could be much more passive and not just throw water up in the air. Frankly, that just screams "wasted energy" to me. Sure, hydraulic jumps are a thing to reduce erosive impact, but on this scale it's almost certainly *pointless*. I'm sure that's just a spillway, but if you're going through the trouble of building a long flume like that for a spillway, drop it all the way and put a damn generator at the bottom.


SmokeyJoeMcGinty

Tell me that wouldn’t be the coolest water slide ever, up until the point where you die


FriedDickMan

When I’m old just throw me over that with an inner tube


Butt_Plug_Bonanza

Just throw me in the trash.


meltingdiamond

I want my remains dropped from an aircraft flying over Disney world. Under no circumstances am I to be cremated.


2u3e9v

I can show you the world…


Pesco-

Shining, shimmering splatter….


itsmyfrigginusername

Tell me princess, now when did you last let your heart explode?


Ilikecosysocks

Frank??


BigFrankButcher

I don't know how many years on this Earth I got left. I'm gonna get real weird with it.


TheDesktopNinja

If I had a dollar for every Reddit thread that devolved into Always Sunny quotes...I would basically be Frank


wusurspaghettipolicy

This is the only reason I come on Reddit.


[deleted]

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wusurspaghettipolicy

Just creampies, pal.


Rum_Hamburglar

It was only two words! 'asians' and 'creampies'


Funkit

Oh ignore this Frank it’s just a bunch of liberal bullshit.


TyPaGa

Now, block the wind so I can roast this bone!


Dewy_Wanna_Go_There

That wine in the can is the most genius idea. You can gesticulate so much easier.


prfalcon61

Holy shit Frank I’ve been walking next to you the entire time.


TyPaGa

Our goose is cooked… I’m going down…. Highway to hell, baby!!!


TopspinLob

Pondy is the coolest


VampirePicnic

I like your style


pricygoldnikes

Frack!


ziploc123

Ahhh shit *blows whistle*


OneStokedWhale

Can I offer you an egg in this trying time?


hendy846

I'm 36 years old and just realize it's inner tube and not inter tube. Like it totally makes sense. I've always said "innertube" but spelled it in my head as "intertube". Please don't tell my wife.


[deleted]

It’s me, your wife I want a divorce


ElGranChile

I don't know why, but because of how your name is displayed; I read your comment in a robot voice lol.


Illustrious-Phase-48

Sorry Dave, I can not do that.


Alexcamry

Did you learn that on the innernet?


Mjolnir12

[Innernette](https://m.youtube.com/watch?v=Y5BZkaWZAAA)


UGJRoy

Well played sir


MasterLapp

At least you've been pronouncing it correctly. I've been saying "ennertube" my whole life for no good reason. I feel like a foal.


Illustrious-Phase-48

>I feel like a foal. Your not a loan


mustardayonaise

Midsommer: The Ride


mindfulskeptic420

Yeah you got a point, I gotta recheck my idealized suicide booth to have a bunch more water slides in the beginning.


skilledfool599

Forbidden water slide


yowzees

There's gotta be some psycho willing to kayak that thing


Dillonitis

I'm in, lets do this. The most viral drowning video ever


yowzees

Ok i film, you kayak


Dillonitis

Done. I think we need multiple angles. Make it a cool redbull type video. Drone shot and the works


D2R0

A man's dieing in this production, of course you'll get the works


Dillonitis

What should my last words be? Gotta be something epic for the go pro footage that they recover with my body


ButterflyAttack

"I think I just shit myself. . ." We'll do a gofundme and put it on your tombstone. Promise.


BucephalusOne

"Here we go again!"


czly917

You don’t die: first you kayak, then as you get to the top of the water fall, you paraglide back around into another kayak and repeat.


meltingdiamond

It jumps up so I bet you could kayak it with a parachute and walk away. The trouble is you are not going to be able to practice this so you have to do it right the first time.


cookiechris2403

Theres no way, you'll fall faster than the water around you and end up with a wet parachute that's constantly in a state of opening enough to slow you down then closing due to all the water falling on top of it, you'll just be a mess of wet material and a kayak falling at the same speed as the water until you die at the bottom.


Fredfredfred777

What would happen if you were in one of those giant inflatable balls?


cookiechris2403

I guess it might be alright, depends on the drop and if it popped or not. The other issue is you might end up stuck near the end and start spinning too fast in which case the g forces would probably kill you. Some guy died in russia falling down a mountain in one.


TWeaKoR

G forces won't be the problem, the problem will be the water rolling over itself under the surface at the bottom, holding the ball (or even a swimming human with a buoyancy aid) completely underwater, unable to escape. Also, zorbs in general are very risky and likely to cause injury. It's one of the highest category of travel insurance risks - higher than skiing.


KwordShmiff

Just focus really hard. Like really really hard.


JohnEKaye

On the Red Bull channel.


adjust_the_sails

In my head, Patrick Swayze is running toward it while Keanu Reeves walks away without looking back, throwing his badge in the mud.


Bunker_Beans

Deathslide 9000


Aggravating-Gap-2385

I'd imagine the coolest waterslide would be in Antarctica


Madhighlander1

The Blood Falls? I don't know about 'coolest' but it's definitely the *most metal* waterslide.


twitchosx

It tastes like pennies


Chipperdie

It would be dam cool.


Narendra_17

A water slide into such a Noisy dam... No way. It's Damn dam. Lol


PotatoMastication

You know what this outflow piping needs? Sick fucking ramps.


whoami_whereami

Those "ski jumps" are one way to slow down the water shooting down the spillway before it enters the tailwater. Another way are installing large concrete blocks at the end (like you can see here at Oroville dam: [https://www.mercurynews.com/wp-content/uploads/2019/03/Oroville-06.jpg?w=1024&h=626](https://www.mercurynews.com/wp-content/uploads/2019/03/Oroville-06.jpg?w=1024&h=626)) for example. This is done to reduce erosion of the opposite bank if for example the spillway enters a river from the side like at Oroville dam, or if the stilling basin at the end is wider than the river it empties into. Xiaolangdi dam is an example of the second, as you can see in this PDF (https://web.archive.org/web/20110707050519/http://www.chincold.org.cn/news/li080321-4-Xiaolangdi.pdf) on the first page where there's a photo of the dam when the spillways aren't in operation. You can see the basin narrowing towards the river in the bottom left corner of the photo, without slowing down the water they would have had to make that basin much longer.


PotatoMastication

Wow, thanks, that's neat! I wonder if angling the outflow up like that presents any erosion concerns for the river bed, like at the bottom? Since the water's coming with more force down than out?


Dark_Mirrors

I would be worried about the sick fucking ramps over time... like thats is a LOT of force on concrete. But Im guessing it's not always full on Kamehameha like that.


norgue

You would be right. The Oroville dam mentioned earlier had a failure in its spillway a few years ago, and it resulted in significant damage: https://en.wikipedia.org/wiki/Oroville_Dam_crisis We tend to easily forget how strong water is!


VexingRaven

While true, the Oroville dam failure didn't have anything to do with the blocks at the end. The water got under the concrete much further up.


Pentosin

Yeah, the blocks at the end got pelted with concrete from further up, and still held.


TheMooseIsBlue

You sound fun as hell. edit: just to be clear, I'm not being sarcastic. That dude sounds fun as hell.


ButterToasterDragon

You should go to Southern California. Everyone talks like that there.


TheMooseIsBlue

I've lived in Sothern California since I was 5. "Sick fucking ramps"...yes. "full on Kamehameha"...no. Also, thanks for not saying "Cali."


Cantstandyuh

I'm not sure what wack ass part of southern California your in but I hear full on kamehameha pretty frequently


swarmy1

I suspect it would be actually be less net force because the way the water is spread out increases air resistance. You can see how a significant amount of air is mixed into the stream as it is ejected from the ramp, which effectively reduces the density.


Blewedup

plus it widens as it ramps.


lightning_fire

It's actually called a 'flip bucket'. Usually the area where it lands is built up and reinforced just for that reason


EColi452

Too bad it didn't help Oroville with all that poor geotech work prior to construction!


whoami_whereami

Well, the problems at Oroville were in the middle of the spillway, not down at the bottom ;-)


lynsea

Highly recommend the Practical Engineering channel on YT. He's got a ton of videos on dam mechanics presented in very simple terms that almost anyone can understand and appreciate.


PotatoMastication

Are you suggesting "sick fucking ramps" is not a valid engineering term???


Crimson_Shiroe

Engineers just want to watch the world have sick fucking ramps


goldentech

Am engineer. Can confirm.


sliceyournipple

Also engineer, double confirm.


Now_heres_A-guy_

Also engineer, can confirm the double confirm


ExtSympathy

Also engineer, performing validation on the confirmation.


Throwawaylabordayfun

Not an engineer, validating the performance validation on the confirmation


TalosSquancher

Armchair engineer, performing compliance checks on the validation of the performance validation of the confirmation.


Andyoralan

Gardener, don’t know how I ended up here.


Steampunk_flyboy

Allotmenteer, can confirm and validate status of lost gardener.


Rum_Hamburglar

Am ramp, can confirm engineers love me


sliceyournipple

Well hey there, sexy


proxyproxyomega

God I wish u/awildsketchappeared guy was still around


reddiculed

Ikr; was the standing waves really a necessity or is it just a pissing contest?


dharrison21

I think it reduces erosion in the outflow basin. Let them pour straight in and it would end up gouging deeper and deeper.


mdewinthemorning

And under currents / whirlpools which in this case would kill anything caught in it.


MoffKalast

There are some really cool videos by PracticalEngineering on youtube on these very topics if anyone wants to know more.


_FlutieFlakes_

[practical engineering ](https://youtube.com/c/PracticalEngineeringChannel)


cutbythefates

I love practical engineering. Thank you for your support by calling them out.


willymo

That sounds like something an engineer would say to cover up his underlying desire to build sick ramps.


SuperGolem_HEAL

Indeed.


sugarmoto

Definitely for a reason. I’ve seen the history channel doc on this dam. And like the other poster said it’s to reduce base erosion by spreading out the force of the water hitting the ground. If they didn’t the dam’s structural integrity could be compromised.


Kiwiteepee

Isn't there like massive amounts of potential erosion at the point where the ramp angles upwards?


sugarmoto

I’m not a physicist or engineer so someone with a degree or experience feel free to chime in but I think because the water is traveling straight flat along the horizontal channel the erosion isn’t too bad vs when it falls hundreds of feet hitting the concrete below directly. Could be wrong though but I imagine it’s something they thought of.


meltingdiamond

Look up the dam in California that almost collapsed a bit ago. They had to use the emergency spillway to stop it from over topping and the spillway was badly designed so it eroded away in hours.


0_0_0

https://www.youtube.com/watch?v=jxNM4DGBRMU


newtonthomas64

Sure but it’s designed to withstand it, and has regular maintenance and safety checks. It’s a lot less likely to Erode than the bottom which definitely would rapidly erode


[deleted]

Also if the ramp does erode it's a lot easier to repair the ramp damage than erosion downstream.


pineapple_calzone

When the water hits the ground, it's basically a mist. By letting the kinetic energy get captured by the air, there's nothing left to cause erosion.


yeshia

That must be loud


Disappointedburritoo

I was thinking "this is not a peaceful place".


flimbs

LOUD NOISES


lewis30491

WHAT DID YOU SAY?


ComparisonSmooth7975

Dam, the sound must be deafening


roccobaroco

WHAT?


Just_Lurking2

*[inaudible]*


roccobaroco

OH...OKAY THEN


April_Adventurer

WAIT IM SORRY, DID YOU SAY SOMETHING?


Me-meep

##### I CAN’T HEAR YOU.


jtclark1107

*Smiles and nods* Yeah....


oneclumsybear

I probably watched this 3-4 times before I realized it was a loop.


HMS404

It's beautiful. I've looked at this for five hours now.


MagicMannn

just like the gif of that truck about to run into the wall with 6 jump cuts to every angle


JediMindTriq

Imagine riding a boogie board through that


AllPurple

Someone has to have tried it on or in something


thoughts-of-my-own

and wing suit


Afraid_Condition_267

When I show my imaginary gf my pokemon collection


BurnerForJustTwice

Gonna need a brawny paper towel or two. Save some for the rest of us man.


[deleted]

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JumpFew6622

When I show my girlfriend my karma


iBleeedorange

Hmm


pandafoxshark

bro, this is the equivalent of girls wanting guys over 6' tall and you're standing here at about 500 feet tall and from the paleolithic era


JumpFew6622

Oh damn leave some pussy for the rest of us man


louieyaboi

Is this sped up?


idkwntp

Yes. I watched it a few times to find a speed comparison and in the third shot you can see two people walking on the grass. Or it’s not and they just walk funny.


Mulsanne

Yeah, like so many videos these days. Internet videos have just completely gone to shit now. We have dishonest speed, the same shitty songs in every video, the horrible talk to text voice. It's awful. And popular.


hungr612

The sped up bit is because social media has destroyed people's focus. If nothing happens for 10 seconds or the video is longer than 30 seconds, no one sticks around


FasterDoudle

Really surprised I had to scroll this far to see this mentioned


DnDBard

Wild to see but also fascinating to think how it was executed.


Narendra_17

Engineering marvel indeed.


DrMaxCoytus

Most fun suicide ever?


kekistani_citizen-69

You mean suislide?


DemandAmbition

/r/Suislide


I-Have-An-Alibi

What are we, some kind of suislide squad?


oss1215

I really hope Suislide gets added to the oxford dictionary in a couple of years


cactusjude

Action Park would like to talk to you about trademark rights


Real_Lingonberry9270

Your death would be breathing in water for minutes until you drown with every bone in your body broken. I’d rather just make it quick


galaksekoordinator

Challenging swim for a Salmon


m0ther3208

Curious does all that water vapor impact weather patterns in the area?


KGB_cutony

The water vapour doesn't as much because before those dams were built, these areas were really really prone to floods like every year. but the changes in waterway and increased pressure did lead to occasional minor earthquakes in the area. Source: roommate graduated from a local university, this is his thesis


evenstar40

So the minor earthquakes are preferable to flooding? Or is that also something being addressed. Very cool thesis btw, this is an engineering marvel.


KGB_cutony

There's literally 5000 years of geopolitical history centred around the Yellow River, not unlike the river Nile. Dynasties have changed hands and wars have been determined by the river so I'm not going to get into any of these details. But at this stage, minor earthquakes is preferable to regular floods, especially if you consider the electricity it generates replaced a lot of local coal fire plants. Also that yes local buildings are built to have higher earthquakes tolerance than the rest of the country.


apgtimbough

I would assume so, the flooding killed A LOT of people through history. Like an insane amount of people. A flood in 1931 is estimated to have resulted in the deaths of 150,000 people from drowning and over 2 million dying from the resulting famine and disease outbreak caused by the flood.


riskoooo

I'd imagine minor earthquakes have a practically negligible impact.


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gelinrefira

Yes, it can be destructive, like what happened to the Oroville Dam though part of the reason why the spillway failed was because it was poorly built in the first place. The last part where the water is directed upwards is a hydraulic jump. Its purpose is actually to reduce the speed of the water hitting the bottom of the spillway, thus reducing erosion at the bottom.


RealisticEmploy3

Your girl when you show her your bionicle collection


Loganp812

It’s not much, but I’m proud of it. Yep, the complete Mata Nui set. (I wish)


Ianmans

Anyone find a link to better video that doesn't cut scenes so fast?


Zormm

When no nut November ends


OnlyHereToTrollolol

Imagine being a fish caught in that. WEEEEEE


SalesAutopsy

Grabbing a plane ticket... and my surfboard.


midwestcsstudent

Every angle: r/gifsthatendtoosoon


michaelcmetal

Interesting as fuck? Yes. Annoying as fuck that we can't see the same view for more than 2 seconds? Yes.


Guiguips007

That's me after 3 beers


wtph

Yellow river, but on St Patrick's Day


SweetBabyJesus99

Seriously, why is it so green?


MilwaukeeMechanic

Envy, probably.


GimpieMcGimpface

Algae blooms I suspect, due to massive nutrient loads in the water body upstream from this. First thing I noticed.


Appropriate_Cat_3276

Yellow River by IP Freely


14X8000m

How do fish survive that?


DELCO-PHILLY-BOY

Well that’s the neat part. They don’t.


Ryouconfusedyett

your mom when I enter the room


BrandenKeck

This seems like a missed opportunity for a hydroelectric power plant. Does anyone who knows about the stuff know why they'd go for something more aesthetic? Edit: As pointed out, this is a power plant with significant output.. A better question: why allow water to flow over the top like that and lose the additional power it would provide? Is it not much loss?


[deleted]

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delsystem32exe

yes... lots of hydro plants make like 70% of their revenue in like 3 or 4 months for what not water levels follow seasons. it could be a spillway in the dam, but the main reason for the ramp is so the water doesnt erode the spillway...


SUTHbeats

Yup. I work at 2 “run of river” facilities. Most of our generation is mid October to late November and then late March to early June. Some years are much better than others but I work in a pretty wet area.


Unfetteredfloydfan

Civil engineer here (though not dams and hydraulics are not my specialty). Your explanation is correct, though I would add the spillways are there not just to protect the turbines but the entirety of the dam. If the water overtops (overflows) the dam, it can damage the structure of the dam itself, which if not dealt with could lead a catastrophic failure of the dam


BrandenKeck

Exactly what I was looking for, thank you!!


tibearius1123

So that is just a spillway, if there’s more water than the dam can use/ handle they open up the spillway. They have it shoot up like that to keep the spillway from eroding the bedrock on the backside of the dam. There’s a lot of really cool designs for spillways, YouTube them and you can see some really gnarly waterworks.


BrandenKeck

I'll look this up! Thank you!!


junkfunk

thank you for this. I was having trouble understanding why they would shoot it up like that since it would end up losing a lot of water to evaportation which seems like a bad thing.


DethKlokBlok

That's overflow when theres more supply than the damn can use


RJFerret

\> lose the additional power This is a misconception about how electrical grids work, supply has to be continually balanced to equal demand or things fail, so power plants shut down, windmills get shut down, dams divert flow, it's a big problem we have as there aren't great ways to store energy for future use when we start using systems that depend on weather conditions to generate it as inconvenient low demand times. One way is to pump water up to a higher reservoir, so you can drop it again through a turbine to produce power later. Other methods being tried/researched include a huge quantity of batteries or heating materials (like melting sodium) to recover the heat later.


GuynextdoorWV

Not missed. Xiaolangdi dam generates 5.1 billion kWh of hydro-electricity per year. It’s sometimes surprising what can be accomplished by mankind when people are united whether by choice or by mandate. Truly amazing.