Glennies Creek Dam spillway is an unlined cutting in welded ash flow tuff which supplied the entire rock fill requirement for the construction of the dam embankment.
32.
Many years later, after a series of surveys confirmed the site's suitability, the State Government approved the site for construction of an earth and rock fill dam.
33.
It is being constructed of rock fill _ considered more stable in an earthquake than concrete, which cracks, or soil, which can become saturated with water and liquefy _ over a core of impervious claylike material.
34.
La-Villita is an earth-cum-rock fill dam with a crest length of 320 m, a height of 60 m, and a power generation capacity of 300 MW . This was the first dam built on the Balsas River.
35.
Type of earth and rock fill dam body volume and body 2.075 million m3, river bed height 53.00 m ., 15.80 hm3 lake volume at normal water elevations, normal water elevation of the lake area is 1.28 km2.
36.
The segments were sunk into a ditch dredged through bay mud and covered with rock fill, and then pumped free of water upon completion, making the resulting tube somewhat buoyant, but held in place with a rock overfill.
37.
It would be built of rock fill embankment at the coastal sides ( more like the proposals for " Tidal Lagoons " ), but like the STPG would be sluice caissons and turbines with powerhouse in the middle section.
38.
A subsequent investigation by the British Geographical Survey showed the road has had a history of subsidence-related long-term closures dating back to the 1930s, including a 1970s project that attempted to strengthen the layer below the tarmac with local rock fill.
39.
The spillway excavation was designed to be located entirely in welded tuff and not to encroach on either the underlying non-welded tuff or the overlying sandstone, both of these rock types being much inferior to the welded tuff as a rock fill construction material.
40.
In 2006, at dam height, it was regarded as the third highest dam of this type ( concrete-faced rock fill dam or CFRD ) in the world, but, in June 2006, the water which it held back ran out following a break in the dam wall.
