On 15 mai, 03:19, "jonathan" <H...@[EMAIL PROTECTED]
> wrote:
> "Skeats" <notmeeit...@[EMAIL PROTECTED]
> wrote in message
>
> news:y1GWj.3516$DZ6.159@[EMAIL PROTECTED]
>
>
>
>
>
>
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> > You =A0might like to see the article today 14th May in The
Independent.
>
> > The Three Gorges seems to be ok this time but others aren't.
>
> > "Thousands of troops are tonight fighting to plug dangerous cracks in
a =
dam
> > above an earthquake-hit Chinese town.
>
> > Zipingpu Reservoir is upstream from Dujiangyan which was near the
epicen=
tre of
> > the 7.9-magnitude quake.
>
> > China's top economic planning body said today that the earthquake had
da=
maged
> > 391 dams. It said two of the dams were large and 28 were medium-sized.
>
> > The official Xinhua news agency said the ministry had set up an
emergenc=
y
> > command centre at the dam.
>
> > The death toll from the quake may already by more than
> > 50,000".................
>
> > Further down
>
> > .......................
>
> > "Sichuan had other major dam projects, including the massive Three
Gorge=
s dam,
> > the world's largest about 350 miles to the east of the epicentre, but
> > officials said it escaped undamaged.
>
> > He Biao, the director of the Aba Disaster Relief headquarters in
norther=
n
> > Sichuan, said there were also concerns over dams closer to the
epicentre=
..
>
> > "Currently, the most dangerous problems are several reservoirs near
Wenc=
huan,"
> > he said.
>
> > "There are already serious problems with the Tulong Reservoir on the
Min=
> > River. It may collapse. If that happens, it would affect several power
p=
lants
> > below and be extremely dangerous," he said."
>
>
>http://www.independent.co.uk/news/world/asia/creaking-dam-adds-to-ear...
>
> > Skeats
>
> And on the link below, I didn't point out how much
> the Chinese have underestimated the risks =A0at the
> Three Gorges. Pretty much at every step they seemed
> to have low-balled the problem. When I see that kind
> of bias combined with such potential for disaster, it
> gives me the willies.
>
> "Examples of the flaws in CYJV's analysis are as follows:"
>
> Underestimation of earthquake ground accelerations
>
> Inadequate analysis of reservoir-induced seismicity
>
> Inadequate analysis of structural stability
>
> Underestimation of the risks caused by catastrophic landslides
>
> Underestimation of risk of spillway failure
>
> Failure to consider downstream effects of cofferdam failure
>
> No provision for decommissioning of the dam
>
> Flawed Bases of CYJV's Sedimentation Analysis
> =A0Unreliable Equilibrium Slope Calculation
>
> Miscalculation of Bed Load
>
> Inadequate Empirical Estimate of Reservoir Trap Efficiency
>
> Underestimation of Reservoir Sedimentation Rates
>
> http://www.threegorgesprobe.org/pi/do***ents/three_gorges/damming3g/c...
>
>
>
> - Masquer le texte des messages pr=E9c=E9dents -
>
> - Afficher le texte des messages pr=E9c=E9dents -- Masquer le texte des
me=
ssages pr=E9c=E9dents -
>
> - Afficher le texte des messages pr=E9c=E9dents -
Thank you for interesting input but this said some of the World dams
are at risk as well since built on well known faults.
Foremost is the Aswan dam in Egpyt on the Nile & built indeed right on
the African Rift fault. A major quake there would send a great part
of Egpytians flowing to the sea
Regarding present needs of China for Hydropower it seems necessary for
that great country to turn its eyes towards the Tsampo river where
indeed at the Tsampo gorges _ as I have stuidied indeed the case _
there is the possibility of construction of 3 dams whose output each
will match 10 times the full capacity of the 3 Gorges Dam ... and this
in all security considering the very stable bed rock .
I hope China will look into such possibility of the Tsampo Gorges
Dams as soon as possible .
Sir Jean-Paul Turcaud
Australia Mining Pioneer
Discoverer of Telfer, Nifty & Kintyre Mines in the Great Sandy Desert
Exploration Geologist & Offshore Consultant
Bus ph + 33 6 50 17 14 64
Founder of the True Geology
~ Ignorance is the Cosmic Sin, the One never Forgiven ~
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