A lot of planned hydropower projects that the height of its dams are up to 200 to 300 meters and the spillway discharges are 20,000 to 50,000 m3/s, will be founded in the 21st century, this will challenge the high dam hydraulics for some new problems.
Until 1997, 21 thousand dams of more than 15m high have been built. 12 dams of more than 150m high have been built or being built. Construction of some super high dams, such as Ertan hydropower station with 240m high dam, greatly promotes the technology of large hydropower station construction.
Owing to the Longyangxia hydropower station bears to regulate climax and frequency of hydropower in North-west network, and because it is a multi-year regulative reservoir which possess 178 meters high dam and 270 hundred million stere water, the planning for south-to-north water transfers will supply 170 hundred million stere water, so it is a urgent problem to resolve how to transfer these waterpower sources to electric energy.
-We have examined the digital waveform data and relocated a number of events within the June 1987 earthquake swarm, which occurred beneath the northern part of Lake Aswan, 70 km southwest of the Aswan High Dam in Egypt.
Previous estimates of average annual evaporation from the lake formed by the High Dam at Aswan, Egypt, fall in the range from 4.65 mm d-1 to 7.95 mm d-1.
Net radiation has been measured for the first time over the Aswan High Dam Lake on the Nile River for 132 days including warm and cold seasons.
Effect of storage reservoirs on the behavior of rock masses of high dam beds
Measurement of the upper pool levels of a high dam during construction