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article imageChina Now Dealing With Dams Damaged by Earthquake

Posted May 14, 2008 by  KJ (momentsintime) in World | 6 comments | 447 views
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The situation in China could be getting worse. Troops have been rushed in to plug dangerous cracks in a dam close to Dujiangyan in Sichuan province.
"It (the dam) is only five kilometres away, we are downstream of it," Speaking from Dujiangyan, Sky's China correspondent Peter Sharp said.

"We understand that some of the People's Liberation Army troops that are deployed here helping with the rescue operation... 2,000 of them [have been moved] upriver to seal some serious cracks in the dam wall."


The Zipingku Dam has suffered dangerous cracking due to the 7.9-magnitude earthquake on Monday in China.

China rushed 2,000 of their troops in to plug up the cracks. This is not the only dam though in the nation devastated by the massive earthquake. On the National Development Reform Commission's website it was stated that 391 dams have been damaged, two of those are large dams, 28 medium sized and the rest are small dams. The website did not state if Zipingpu was one of the dams.

The city of Dujiangyan would be swamped if the dam were to burst. The ministry has set up an emergency command centre at the dam "to discharge the reservoir's rising waters and guarantee that the damage posed no threat to Dujiangyan and the neighboring Chengdu Plain."

The reports of the damage at these dams comes as search and rescue effects intensify to find survivors amongst the rubble. As the hours tick away those still alive by not be rescued in time. 15,000 have already been declared dead with an additional 14,000 people listed as missing. There are reports that a group of 15 British tourists are among those missing.

One small town suffered 7,700 deaths.

Those at the epicenter are just beginning to receive aid as China begins making the first airdrops of food into the region.

The death toll in China is rising from the quake. If any of these dams come down that toll will rise even higher as waters flood the already damaged cities and villages of central China.

The largest dam in China, Three Gorges Dam, appears not to have suffered any damages from the earthquake.
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  • avatar Posted May 14, 2008 by  Michelle D. (PlanetJanet)
    #1
    It has been been quite a catastrophe...
  • avatar Posted May 14, 2008 by  Chris V. (cgull)
    #2
    It is like adding insult to the injuries. I hope they build a good replacement dam so it can resist earthquakes in the future.
  • avatar Posted May 14, 2008 by  KJ (momentsintime)
    #3
    @ Chris V. (cgull)
    It is like adding insult to the injuries. I hope they build a good replacement dam so it can resist earthquakes in the future.


    It could be like Hurrican Katrina all over again. At some point the human race has to remember that history repeats itself over and over and over.
  • skeptikool Posted May 14, 2008 by  skeptikool
    #4
    @ Chris V. (cgull)
    It is like adding insult to the injuries. I hope they build a good replacement dam so it can resist earthquakes in the future.


    Google Three Gorges Dam

    excerpt from the Wikipedia entry:

    Scale of the project

    The dam wall is made of concrete and is about 2,309 metres (7,575 ft) long, and 101 metres (331 ft) high. The wall is 115 metres (377.3 ft) thick on the bottom and 40 metres (131.2 ft) thick on top. The project used 27,200,000 cubic metres (35,600,000 cu yd) of concrete, 463,000 metric tons of steel, enough to build 63 Eiffel Towers, and moved about 102,600,000 cubic metres (134,200,000 cu yd) of earth.[9]
    When the water level is maximum at 175 metres (574 ft) over sea level (91 metres (299 ft) above river level) , the reservoir created by the Three Gorges Dam is about 660 kilometres (410 mi) in length and 1.12 kilometres (0.70 mi) in width on average, and contains 39.3 cu km (9.43 cubic miles) of water.The total surface area of the reservoir is 1045 sq km. The reservoir will flood total area of 632 sq km of land comparing to 1,350 sq km of the reservoir created by the Itaipu Dam. Comparing to Lake Superior, the Three Gorges Dam reservoir is longer than the lake(560 km), 1.1 % of the surface area of Lake superior(82,400 sq km) and about 1/700 of the volume of the lake(28700 cu km).[10]
    The dam will raise the water level the third time to its designed maximium water level(175m above sea level) by the end of 2008.[11]


    My question elsewhere re: damage to this dam, has been answered. Reportedly it remains unscathed.

    Since it's holding back a lake of such size, should the dam collapse, it would probably result in the biggest human catastrophe of all time. It's even been suggested that this body of water is of such weight as to affect the earth's tilt. If that moves me from Canada's Wet Coast to Southern California, bring it on.
  • avatar Posted May 14, 2008 by  KJ (momentsintime)
    #5
    @ skeptikool


    Since it's holding back a lake of such size, should the dam collapse, it would probably result in the biggest human catastrophe of all time. It's even been suggested that this body of water is of such weight as to affect the earth's tilt. If that moves me from Canada's Wet Coast to Southern California, bring it on.



    LOL, want to go surfing?
  • skeptikool Posted May 14, 2008 by  skeptikool
    #6
    @ KJ (momentsintime)
    LOL, want to go surfing?


    Paddling perhaps - when dried out and if the sharks let me.

    But on topic, with China's pollution problems, those dams are really essential.

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