Three Gorges Dam Begins Storing Water
Anonymous Coward writes "The Three Gorges Dam, the largest hydroelectric project in the world, and one of the largest engineering projects underway right now, has begun accumulating water in the reservoir."
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As many historical sites dating hundreds, even thousands of years old are washed underneath, and even more tragically, the beautiful vista of the three gorges is irrevocably marred by the claws of "progress".
Photos.
Let's just hope this one works out better than the Gouhou dam did. It's my understanding that there are longstanding questions about the build quality, and that there have already been problems with cracks appearing in the dam.
From:
http://story.news.yahoo.com/news?tmpl=st
Correct link here
-kgj
Destroyed irreplacable historic artifacts in exchange for more Farmland. Farmland, for crying out loud. As if the world need more Farmland.
We need educated people not bloody peasants.
Why do undeveloped nations think they need big ill thought throught project like this. Free the people and let them do the thinking and drive the economy.
Curious about the Aswan flop
Quote:
Aswan Dam was unwise. The project was far more expensive than expected. Further, the annual floods carried silt, which created the topsoil needed for plants. Since the creation of the Aswan Dam, the farms on the formerly flooded banks have had to use expensive fertilizers in place of the silt. Formerly, fish have fed on the silt, and the people downstream depended on fishing from the riverhere
Help fight continental drift.
After relocating people from their kinda-nice homes to concrete grottos (it was on the Discovery special a few years ago) and losing their livelyhood, don't you think a million Chinese would get a little pissed off? Aside from the historical, economic, and environmental damage this will cause, what prevents this new lake from silting up (you do recall the Yangtze has about as much silt as the Mississippi) as soon as the dam is "turned on", so to speak? Will they have to dredge it every few weeks? How do other dam engineers prevent silting?
The Chinese government really should put a bit of importance onto Chinese history. After all, how can they point to their "glorious history" if they've destroyed all the evidence?
I will now redundantly add my name to the end of my post. You know, in case you forgot me or something.
This is 7 times the size of Washington DC (http://news.bbc.co.uk/2/hi/asia-pacific/2953420.s tm)
/ fields/2023.html)that is
Going to the handy dandy CIA fact book(http://www.cia.gov/cia/publications/factbook
A little larger than Hong Kong
Twice the size of Bahrain
Twice the size of Singapore
The Three Gorges Dam is a disaster. Frankly, even the Hoover Dam isn't all roses. Large dam projects flood huge areas of land, eliminating entire ecosystems, displacing large numbers of people, destroying archaeological evidence, and submerging economically productive land. There's something to hate for everyone, whether liberal or conservative. Check out the ecology of the Colorado River sometime. Interestingly, the things can even increase CO2 concentrations by flooding green areas. The effect can be quite substantial.
There are also practical difficulties, like the buildup of silt (which always seems to happen much faster than anyone anticipates) and the costs of construction and maintenance (they aren't as cheap as one might expect).
Are they better than fossil fuel plants? Probably. Personally, I like them a lot more than nuclear plants (largely for economic reasons). But I just can't find it in me to be happy about their construction.
A quick and dirty summary of the downside of dams can be found here, though a quick Google search will reveal many more pages for and against.
Make cheese not war 8:)
I visited the Hoover Dam and they said that the life expectancy for it was about 1800 years and they said it was considered being hugely over engineered.
Also, apparently the concrete in the middle hasn't quite finished baking yet so it is still emitting a lot of heat.
It is also interesting that Las Vegas only gets about 4% of its power from the Hoover dam, which is interesting since it is so close to the dam. It turns out that when they built the dam they wrote long term contracts for who would get the electricity. The officials of Las Vegas thought they got their share, it was just that they had no idea that Las Vegas would grow so fast.
The Internet is full. Go Away!!!
The dam will ultimately be able to crank out 18,200 megawatts of energy a year, the equivalent of 26 nuclear power plants or 10 big coal-fired power stations burning 50 million tons of coal.
or about 36 watts per person! China better invest in transmeta or low power dragon cpus if they ever want to make computers ubiquitous. However because of falling energy prices in china, its unlikely the overrun cost of this damn will be recouped quickly, making future investments in energy production in doubt.
With as much water as Lake Superior, the reservoir will stretch 385 miles east to west and more than one mile north to south and 600 feet deep. unlike lake superior all of this water is held back from a lower flood plain by a single entity--the dam. THis could be a spectacular flood if it breeched.
but there's reason to worry. small cracks are appearing in the damn and construction officials arrested for corruption. 60 percent of the waste entering the reservoir comes from sources that can't be treated, such as fields laden with fertilizer and insecticide. Of the 90 tributaries entering the reservoir, 60 are now considered heavily polluted. It may well become a cesspool the size of lake superior.
One might also worry how this will shift the eco system and farmland down stream. THe river has traditionally created havoc with its floods but presumably also renewed farmlands and sustained eco systems down stream.
Some drink at the fountain of knowledge. Others just gargle.
Someone allready pointed out that it won't make much power. What also should be noted is that the main purpose of the dam, controlling water for souther farmland, is highly criticized. Whether or not it will actually be economically justified (lets not forget that it dislocated quite a few people (over a hundred thousand I believe).
Photos.
Anyone want to wipe out the lower half of China has now been given a perfect missle target. Although much ignored by Western media, note that China also faces Uygurs terrorist (otherwised called "freedom fighters" by Western media) threats connected with al Quaeda in the XinJiang Province.
Fact: Some Uyghurs have been implicated in bomb attacks (I don't believe any attacks took place outside of Xinjiang).
Fact: The Communist Chinese government has forcibly moved millions of Han Chinese into Xinjiang over the past 50 years in an attempt to pacify the Uyghur population.
Fact: The Uyghurs are neither Han nor Chinese--they are ethnically Turkish, look different from the Chinese, and speak a language that is mutually intelligible (with difficulty) with the language of Turkey. Before they were conquered by China over 50 years ago they were an independent nation. It is true that this area had been under MARGINAL Chinese control off and on for centuries (there were 42 results under Manchu rule for instance). As a side note, this area has oil. Coincidence that China cares about it?
Fact: The Chinese have not had the best track record dealing with minorities or hunman rights in general (Inner Mongolia, Tibet, East Turkestan, etc etc).
Fact: AFAIK (and AFAAK) the rumored links to al-Qaeda are just that--rumors. Until proven otherwise, they are as insubstantial as links of Saddam to al-Qaeda.
So in conclusion, this is simply another minority group (again, see Inner Mongolia and Tibet for the other two most publicized examples) that is being horribly treated in China--and no one cares because of business opportunities...
erm...
1/3 of power requirements in china is, ahem, what, insignificant in your book? what do you propose they do? buy hamster mills? connect all the population into a computer simulation and harvest bioelectricity? (actually, in hind sight - the harvesting bioelectricity thing might make a good movie)
you'd be surprised how much infrastructure stuff is going on in china right now. highways are beginning to connect most metropolitan areas to one another, new airports are springing into existance (ever compare the new shanghai airport (pudong) with the old (hongqiao)?
Since the dam holds so much potential in the roadblock to china's industrial and economical future (seriously - power-outages are worse there than CA) - I wouldn't call it an "show of pride." That kind of stuff would be probably be exemplified by the maglev rail in shanghai.
Now, being somewhat earthquake-prone is (i think) one of the reasons why they built a gravity dam; it's blocking water just by its weight. I am concerned about the quality of the build - but that is different from concern about the intention to build it. There are no plausible alternatives currently, you see. Besides, if Japan's nuclear powerplant can survive through the recent (last week) 7.0 earthquake, I'd think the technology is there to keep a dam steady.
My life in the land of the rising sun.
nuclear power, leading to large amounts of nuclear waste and with an increased risk of a meltdown occurring in a 2nd/3rd world country with dubious safety records and high levels of corruption
The nuclear waste gets buried and when was the lsat time you saw a meltdown?
And what kind of impact do you think the dam bursting would have hmmm!? The dam (to me) looks far more dangerous than a few nuclear power stations. Containing a nuclear disaster is nothing compared to containing all that water.
One of the big, still mostly unanswered questions about the dam is whether the principal goal is to generate power or to reduce the risk of catastrophic floods. The Chinese government says that they intend to do both. However, often these two objectives clash - you are inclined to take more risks in order to generate more power. Also, in either case there are better alternatives. If you want power, it is cheeper to just build a bunch of nuclear plants. If you want flood prevention, a large series of smaller projects on tributaries would be more effective, would avoid the catastrophic risk, and would have a smaller environmental, social, and cultural impact. The only conclusion one can draw from this is that the CCP wants this because it will be impressive in traditional Chinese "big projects" style. This is probably also a large part of the motivation for their space program. They want desperatly to see themselves as a great modern power. The history of this goes back to the building of the Great Walls (there were several, built at different times) and massive flood prevention projects which often were the basis for the legitimacy of an emperor/dynasty.
My mistake:
"The fuel elements ruptured and the resultant explosive force of steam lifted off the cover plate of the reactor, releasing fission products to the atmosphere. A second explosion threw out fragments of burning fuel and graphite from the core and allowed air to rush in, causing the graphite moderator to burst into flames."
No need to panic, not a meltdown! Everyone return to your stations...
Read Pynchon.
You know, I drive around on a golf cart every day, and it goes a good 20mph and requires minimal charging. I wouldn't mind in the least bit switching over to an electric car providing it would be cheap to recharge
Battery-powered automobiles are incredibly inefficient (avg. range: 90 miles) and the energy sources that would power such automobiles output as much CO2 as an appropriate number of internal-combustion automobiles (sorry I don't have enough time to corroborate the findings I've read from /. and other sources).
You'd be paying as much or more to recharge that battery-powered car compared to what you're paying to refuel your internal-combustion-powered car. (Again, google for the info or go to the library to inform yourself about these things.) Golf carts, mind you, probably weigh one-eighth the weight of an average automobile, so indeed they travel a long range because they are light in weight! Driving battery-powered hatchbacks for short-range trips in a bustling metropolis may be more beneficial than driving the comparable gas-powered hatchback, but I'll leave that to another discussion.
Take Oklahoma for example... TONS of rivers and lots of space where you could easily and very cheaply recreate another hoover dam. WHY DOESN'T THIS HAPPEN???
If I'm not mistaken, Oklahoma is not incredibly rugged (mountainous). If you wanted to produce as much energy that is produced from the Hoover Dam turbines, then you'd need enough an immense volume of water to flow at an appreciable velocity to achieve such energy, thus an immense amount of land would be consumed in Oklahoma to achieve such power and would damage the ecosystems of the Red River and the Arkansas River, if they aren't doing so now. Take the Missouri River, for instance, where the dams that have been erected along the river have decimated the total fish populations that were once ubiquitous in the Missouri.
Read up on the benefits and costs of hydrogen fuel cell vehicles. The vehicles may be environmentally sound, but the means to power the vehicles end up failing to reduce greenhouse gases, at this moment (if only fusion power were implementable). Same thing goes with battery-powered vehicles (cars, not golf carts.)
As for the Three Gorges Dam, it is an environmental, anthropological, and economical disaster unfolding before our eyes. I trust the majority of posts that have been or will be posted reflect what I would like to mention in this post, and indeed this post is grossly offtopic, but someone needs to inform those who may not wholly understand the totality of internal-combustion, battery-powered, and fuel-cell vehicles and the totality of all energy sources.
</two_cents>
With 30-35 million people, Chongqing is the largest municipality in the world. Most people have never heard of it.
-Brett
I did my term paper in my History of Modern China class this past semester and presented the findings at our university's (UMPI) annual conference during a session. As such, I'll respond and try and clear up a few things from what I found:
Coal power isn't an option if your looking at the environment. Chungqing which will now be a seaport has smog that makes LA look pristine... Its the industrial center of that section of China and holds 31 million people (to put it in perspective New York City only has 8 million during the 2000 census as per the New York City Department of Planning has on their website). So much so that there are reports that people who have asthma and journey there are expected to (and have) died within 4-6 weeks.
I honestly don't know about the nuclear power. That was outside the scope of my search so I can only estimate that yeah, there would be a buttload of nuclear waste.
I will say this though, with a body of water that is this large (long, not wide) that the salinity of the water will increase (as is found in other large bodies of water and other dam projects), as such, with this stretching long periods, the watershed is also expected to become saltier and the plant-matter close to the water is also expected to suffer.
These are only the negatives, downstream where there are large amounts of citrus fruit and the "bread basket" of China is located (presumed to be the second largest until the Taiping Rebellion) will now have stabilized flow of the Yangtze River instead of the traditional seasonal changes of approximately 30 meters in depth.
China isn't *controlled* by the communist party, its controlled by the rivers. Rivers in China change course often, and when they do, approximately 1.2 million people die each year due to either flooding or starvation with a poor crop (figure obtained from in class lecture, will find an online source if asked). China lives "on the edge" of starvation constantly with only 12% of their land being arable, so when a river moves, its BIG NEWS. This will be the first time that many farmers downstream are able to install permanent irigation.
- Page
We don't need an "overrated" so much as we need a "you completely missed the parent's point, dumbass..."
Be glad you don't live there. From the link: The city currently lacks a wastewater collection and disposal system; virtually all domestic and industrial wastewater discharges through some 600 random discharge points into the two rivers, which run through the city. Since these two rivers are the source of the city's drinking water, the lack of wastewater management facilities gives rise to a daily risk to public health.
Phew. No thanks.
Is it fascism yet?
On the contrary, that idea is generally a myth.
The fuel elements ruptured and the resultant explosive force of steam lifted off the cover plate of the reactor, releasing fission products to the atmosphere. A second explosion threw out fragments of burning fuel and graphite from the core and allowed air to rush in, causing the graphite moderator to burst into flames."
If I read my sources then the Chernobyl accident was the worst in the history of nuclear power, in fact it KILLED 10 TIMES the previos record holder of 3 deaths. Yes, 30 people died at the site. Another 10 have found to have thyroid cancer and have died. "An authoritative UN report in 2000 confirmed that there is no scientific evidence of any significant radiation-related health effects to most people exposed"
AND - if could of been avoided completely.
Not the biggest deal in the world... but since the conversation was here I thought I'd stick my nose in. Looks like for acciendent related deaths, Nukes are pretty damn safe, thus far anyway.
Tell you what, save a few lives and a ton of cash. Don't bother building your damn on one coast and your nuke plant on the other - next time both of you meet in the middle (Colorado) - I'll buy you both a beer.
Good judgment comes from experience, and a lot of that comes from bad judgment.
Since we have instituted the Endangered Species List what percentage of the species we have put on that list have been taken off that list as being 'No longer in danger of extinction'.
Sure thing, Mr Can't Use Google
Now go and plant a tree to say sorry. Even if you don't think it'll save a species, you'll have a much nicer local enviroment as a result (Trees are a great place to have a barbeque under)
So when do we flood the Grand Canyon?
Probably once we've flooded some of the uptream portions, like the Glenn River Canyon, errr, Lake Powell?