DISASTER China's Three Gorge Dam in Danger

Millwright

Knuckle Dragger
_______________
There are two rows of floodgates.

A high set and the lower set.

The lower set is for draining the more turbid water, lower in the water column to slow silting.
 

Bubble Head

Has No Life - Lives on TB
Sorry, you seem to have entirely misunderstood my point.
You don't understand the physics of diving and your ability to survive the dive. The Damn has 175 meters of water which equals 574 feet depth. So you are going to send someone down 574 feet and subject them to 17.3 atmospheres of pressure. They can't carry that much air and they would have a lot of decompression time to do. I say any discussion of divers inspecting the bottom of the damn is Bravo Sierra.
 

bw

Fringe Ranger
You don't understand the physics of diving and your ability to survive the dive. The Damn has 175 meters of water which equals 574 feet depth. So you are going to send someone down 574 feet and subject them to 17.3 atmospheres of pressure. They can't carry that much air and they would have a lot of decompression time to do. I say any discussion of divers inspecting the bottom of the damn is Bravo Sierra.

It's total BS, which is why I posited a diver going under about two feet while holding onto the ladder like grim death, waiting a few minutes, and then popping up and giving whatever report he had been clued was wanted. Do you see any tiny disconnect between my two-foot-fake-dive and your 574 foot suicidal plunge? Any disconnect at all?
 

ShadowMan

Designated Grumpy Old Fart
What's taking soooo long for this dam damn to break?

tenor.gif


OK....that was wrong. I'll admit it. But it was funny....in a sick disturbed sort of way. But funny.
 

Bubble Head

Has No Life - Lives on TB
It's total BS, which is why I posited a diver going under about two feet while holding onto the ladder like grim death, waiting a few minutes, and then popping up and giving whatever report he had been clued was wanted. Do you see any tiny disconnect between my two-foot-fake-dive and your 574 foot suicidal plunge? Any disconnect at all?
Sorry but I never saw your post about a diver holding on to a ladder and only going two feet under. What I had read was about divers inspecting the bottom of the damn. Thought that was the discussion. What can I say other than nobody has been down there and will not be going soon. Even a remote couldn't see anything in that crap.
 

DannyBoy

Veteran Member
You don't understand the physics of diving and your ability to survive the dive. The Damn has 175 meters of water which equals 574 feet depth. So you are going to send someone down 574 feet and subject them to 17.3 atmospheres of pressure. They can't carry that much air and they would have a lot of decompression time to do. I say any discussion of divers inspecting the bottom of the damn is Bravo Sierra.
Ahhh.... never thought of that! Yeah, was thinking 175 ft. deep, which is still a deep dive. Now the backside might be different, at least not as deep, but again, the turbulence back there would be crazy. Ya think they have any technical divers? I had a friend that did that... finally quit, his wife made him, after he almost died.

We don't really have a good understanding of how crazy big this thing is... you don't get a sense for it just looking at the pics. It dwarfs hoover dam. I have been there, and it is a monster. (although pretty deep also)
 

Doc1

Has No Life - Lives on TB
You don't understand the physics of diving and your ability to survive the dive. The Damn has 175 meters of water which equals 574 feet depth. So you are going to send someone down 574 feet and subject them to 17.3 atmospheres of pressure. They can't carry that much air and they would have a lot of decompression time to do. I say any discussion of divers inspecting the bottom of the damn is Bravo Sierra.


Couple of other points: You can't dive air at 574 feet. You'd have to dive mixed gas with surface supplied gas. Additionally, working at that depth implies a complete saturation diving load out. This would be, at minimum, a barge or ship with a habitat, a diving bell and all of the associated support personnel an material (which is a LOT). I've never dived saturation, but I have worked on sat jobs and it is very complex and labor and equipment intensive just to put a few men down to five or six hundred feet. It's not a light undertaking and not a thing you could do from the top of the dam without being noticed. So much equipment is required that anyone on the banks or any satellite photography would detect it.

In any case, as I stated earlier, I don't believe they put any divers into the water.

Best
Doc
 

Squid

Veteran Member
Couple of other points: You can't dive air at 574 feet. You'd have to dive mixed gas with surface supplied gas. Additionally, working at that depth implies a complete saturation diving load out. This would be, at minimum, a barge or ship with a habitat, a diving bell and all of the associated support personnel an material (which is a LOT). I've never dived saturation, but I have worked on sat jobs and it is very complex and labor and equipment intensive just to put a few men down to five or six hundred feet. It's not a light undertaking and not a thing you could do from the top of the dam without being noticed. So much equipment is required that anyone on the banks or any satellite photography would detect it.

In any case, as I stated earlier, I don't believe they put any divers into the water.

Best
Doc
But that is for normal people. We are talking about the new Master Race, I am pretty sure it’s different if your chinese.
 

bw

Fringe Ranger
In any case, as I stated earlier, I don't believe they put any divers into the water.

At some level in the chain of command they faked it. It's possible those who reported that divers went down were not in on the fake.
 

Squid

Veteran Member
How the Hell did the CCP allow two foreigners to get close to AND VIDEO the dam?
This will be corrected and the Police will be discussing life histories with the two.

Westerners that post rah rah CCP approved messages are given a freer hand but everything they show and say will definitely be monitored and reviewed.
 
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Melodi

Disaster Cat
This will be corrected and the Police will be discussing life histories with the two.
Or they let them in, because they knew the dam is still there for now and the guys agreed to say nice things like "the Chinese have a lot of engineers on this" (or at least say it now until they are out of the country).

As long as the dam is actually standing, China gains from what looks like an "unbiased" report (the young men are still very brave, but I want to hear from them after they are out of the country for the full picture).
 

Bubble Head

Has No Life - Lives on TB
Isn’t that depth measured from sea level?
What Doc1 posted is 100% correct. All dive tables are at sea level being 1 atmosphere. Then every 33 feet down is another atmosphere. And you continue counting down at 33 foot intervals and you must log the time at depth. Being above sea level does very little until you make an extended dive at some altitude maybe above 10,000 feet. There are tables that people have tried to work out but the adjustments are very small. You want to always figure your dive rounded to the deepest atmosphere and always round to the longest time down. The bends really suck.
The Chinese Communist did not put Divers in the water to inspect the damn. What they know of the condition of the damn is by their own sensors along with any disruption or increase in flow without adjusting it themselves. I am sure they have listening equipment that is picking up the moaning and groaning of the damn along with the harmonics of the water. That is it.
 

Countrymouse

Country exile in the city
View: https://www.youtube.com/watch?v=Zr8mnAZyMAw
Quick view of the front of
the dam today from some brave souls visiting china.


Very interesting.

Particularly when the three guys talked about their trip up to now.

How they had a "really hard time" the day before---ran into lots of problems---\


Because they went through WUHAN---

And they DIDN'T KNOW that THAT was the epicenter for the Coronavirus.

???????????? !!!!!!!!!!!!!!!!!! ?????????????????

How can anyone not in a mud hut in the jungle have lived on the planet the last four months, and NOT have heart of Wuhan?

...obvoiusly, not the brightest bulbs in the box-------------------
 

Millwright

Knuckle Dragger
_______________
Very interesting.

Particularly when the three guys talked about their trip up to now.

How they had a "really hard time" the day before---ran into lots of problems---\


Because they went through WUHAN---

And they DIDN'T KNOW that THAT was the epicenter for the Coronavirus.

???????????? !!!!!!!!!!!!!!!!!! ?????????????????

How can anyone not in a mud hut in the jungle have lived on the planet the last four months, and NOT have heart of Wuhan?

...obvoiusly, not the brightest bulbs in the box-------------------


Or they know more than we do.
 

Donghe Surfer

Veteran Member
Or they let them in, because they knew the dam is still there for now and the guys agreed to say nice things like "the Chinese have a lot of engineers on this" (or at least say it now until they are out of the country).

As long as the dam is actually standing, China gains from what looks like an "unbiased" report (the young men are still very brave, but I want to hear from them after they are out of the country for the full picture).
The American is married to Chinese citizen (wife) who helped set up the tour (they introduce the tour guide lady in the mask in the middle).
 

DannyBoy

Veteran Member
Or they let them in, because they knew the dam is still there for now and the guys agreed to say nice things like "the Chinese have a lot of engineers on this" (or at least say it now until they are out of the country).

As long as the dam is actually standing, China gains from what looks like an "unbiased" report (the young men are still very brave, but I want to hear from them after they are out of the country for the full picture).
Actually, they did say that, plus added that there are "hundreds or thousands of sensors" iirc. All is cool...

they also said they could only ride into the area in a tour bus, and had to get clearance to do so. Originally thought they would be able to rent a car and drive to the dam...

And also, they said they would be publishing a more in depth video showing the other side of the dam... they had taken lots of video from the shore they pointed at on the north/east bank. Be interesting to see if they get that video out of the country.
 
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Millwright

Knuckle Dragger
_______________
What'r the chances that these guys will be debriefed by some intel agency upon their return?

Perhaps they went into this..."on a mission".
 

BeeMan

Just buzzin along
Can’t think of an honest one .... enlighten me.
Well, that’s why I said dream. I don’t think any of them are honest most of the time, but the law of averages says every now and then someone will goof up and do the right thing.
Completely unintentionally of course, accidents could happen and the truth could come out.
 

OldArcher

Has No Life - Lives on TB
We can only dream that these two work undercover for an HONEST three letter US agency.

Bright Blessings!

Is there an honest three letter US agency? If so, what is it? This old, inquiring mind, would like to know...

Blessed Be,

OldArcher, Witch
 

DannyBoy

Veteran Member
changed gates again... at this point it is kind of symmetric. From the other view, you can not even see the water, all you see is the mist. Did they ever get the rain we had heard was coming?

3gd19.52-8.8.JPG
 

Countrymouse

Country exile in the city
Someone remind me---

wasn't MORE water, than we've SEEN SO FAR, supposed to come down the river from storms---LAST WEEK?

So--WHY are they OPENING FEWER FLOODGATES (only 2 today, and apparently only in the top "row" of gates, as you can see very CLEARLY BENEATH them)????


Or---is this whole thing a SHOW?

Why is LESS water being released?

WHERE did all the upstream water GO?

Or---are these pics from -- perhaps -- YEARS ago---clips being played for our benefit, with fake dates and times?

But how could THAT be---the 3 Brit "witnesses" took pains to call their film "LIVE"---

and only ONE floodgate is open the day THEY are there???

WHERE did all this influx of water MAGICALLY go?

(unless China dug a new riverbed and diverted part of the river to flood more farm country upstream---I know, woo-woo-to-hoo, too)

But really---NOTHING. ADDS. UP.Three Gorges Dam 3 Brit idiots.jpg
 

joannita

Veteran Member
Just checked my FB pg; a friend posted a video of flooding roads in an unspecified city in China w the caption; "Heavy rain".
 

DannyBoy

Veteran Member
Someone remind me---

wasn't MORE water, than we've SEEN SO FAR, supposed to come down the river from storms---LAST WEEK?

So--WHY are they OPENING FEWER FLOODGATES (only 2 today, and apparently only in the top "row" of gates, as you can see very CLEARLY BENEATH them)????


Or---is this whole thing a SHOW?

Why is LESS water being released?

WHERE did all the upstream water GO?

Or---are these pics from -- perhaps -- YEARS ago---clips being played for our benefit, with fake dates and times?

But how could THAT be---the 3 Brit "witnesses" took pains to call their film "LIVE"---

and only ONE floodgate is open the day THEY are there???

WHERE did all this influx of water MAGICALLY go?

(unless China dug a new riverbed and diverted part of the river to flood more farm country upstream---I know, woo-woo-to-hoo, too)

But really---NOTHING. ADDS. UP.View attachment 213392
Keep in mind that water flows through the dam other ways than through those gates (and the "leak")... they might be able to handle a significant amount of flow using the generators... it could be that they normally run them at 75% and now they are running at 100%. Also, iirc the level was significantly down from 175 meters last week. If so, there is room in the lake right now for some amount of rain. Also, that pic above does show the same gates open we saw a couple days ago. The long chutes on both ends have been used recently as in the pic, along with the rocks and handrail are showing in the video that we had seen in the downstream camera view when the water level lowered below the dam. I am thinking the video feeds are legit, at least right now.

And by the way, do we know how much water fell? I am curious if anyone has any numbers... typically that is posted somewhere relative to the dams lake reservoir, whether it is legitimate or not, who knows.

ETA: Also CM, consider that the water flowing down river takes significant time to reach the dam... depending on how where the water fell. The river prolly runs at flood stage something like 3 mph... if the rain fell 500 miles upstream, that is 500/3= 166 hours / 24 = almost 7 days.

My 3 mph guess is based on what I know of the upper Mississippi river... it is also navigable, like the Yangtze and the slope of the drop is held to something that keeps it possible to traverse upstream during flood.
 
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DannyBoy

Veteran Member
Same couple gates are still running, from the last couple days... water level downstream might be a little lower, the rocks in the spillway view are possibly poking a bit higher out of the water.
 

SurfaceTension

Veteran Member
Someone remind me---

wasn't MORE water, than we've SEEN SO FAR, supposed to come down the river from storms---LAST WEEK?

So--WHY are they OPENING FEWER FLOODGATES (only 2 today, and apparently only in the top "row" of gates, as you can see very CLEARLY BENEATH them)????


Or---is this whole thing a SHOW?

Why is LESS water being released?

WHERE did all the upstream water GO?

Or---are these pics from -- perhaps -- YEARS ago---clips being played for our benefit, with fake dates and times?

But how could THAT be---the 3 Brit "witnesses" took pains to call their film "LIVE"---

and only ONE floodgate is open the day THEY are there???

WHERE did all this influx of water MAGICALLY go?

(unless China dug a new riverbed and diverted part of the river to flood more farm country upstream---I know, woo-woo-to-hoo, too)

But really---NOTHING. ADDS. UP.

Recognizing the potential of PWI I deleted a very snarky response to this post, deciding it wasn't very gentlemanly. Instead I'll offer the following:

The best data we have of the reservoir stage-storage-discharge (in this case inflow-stage-discharge) condition is at Three Gorges Dam Monitoring . The latest info we have is represented graphically as:
1597200209828.png

The chart (dismissed previously as "damn statistics" but, in fact, is among the most important data for reservoir management) generally shows a significant reduction of inflow - aka rainfall runoff coming to the dam - since July 28 (green dots). As such, the dicharge (outflow, or red line) has been consciously reduced (fewer gates open) as the stage (water surface level, or blue line) has come down.

All I see is normal reservoir operations...Unless there is actual evidence of massive widespread upstream deluges in the last two weeks (which, as best as I can tell, is internet idiots confusing eastern-coast storms for far-west rainfall) there is really nothing to see here.

Let me know if I'm missing something...
 
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