Post on 26-Dec-2015
transcript
Introduction A dream of nearly one century:
first proposed in 1920’s Site survey and geotechnic
measure in 1940’s Feasibility study and design during
1950’s to 1990’s Construction phase: 1993-2009
Three Gorges Project
Capacity: 39.3 billion c. m. Annual power generation:
84.7 billion kwhr Length: 2,335 m Earth work: 125 million c.
m.; Concrete work: 26 million c. m.;
Residents resettle: nearly 1 million (budget: 5 billion USD)
Project volume: 6 billion USD
The project management Construction
Manager: The Three Gorge Development Corp.
International open bid, e.g., turbine-generator contract was awarded to a Canadian-German consortium.
A project of great controversy Criticism
Negative impact to ecological system High economic cost Potential opportunity to earthquake Population resettlement Safety problems Corruption
Proposed benefits of Aswan
Benefits Controlling the annual floods on the Nile
and prevents the damage Providing about a half of Egypt's power
supply Improving navigation along the river by
keeping the water flow consistent
During construction of Aswan
About 18 years of work
Over US$1 billion
Over 90,000 Nubians were relocated
The Temple of Abu Simel was shifted
Hazards brought by Aswan Seepage and evaporation accounts for a loss of about
12-14% of the annual input into the reservoir The sediments of the Nile have been filling the reservoir
and thus decreasing its storage capacity The Nile delta is having problems due to the lack of
sediment Poor drainage of the newly irrigated lands has led to
saturation and increased salinity. Over half of Egypt's farmland is now rated medium to
poor soils.