三峡水利枢纽二期工程施工

Construction of TGPStage

In the construction of Three Gorges Project, the total amount of concrete is about 28 Mm3 , and the total amount of metal works and reinforcement is approximately 0.72 Mt . The TGP is constructed in 3 stages . The preparation period together with the first stage is 5 years , the second stage and third stage are both 6 years .In the s econd stage construction of 6 years (1998～2003) , there are 18.46 M m3of concrete to be placed and 0.192 Mt of metal works and embedd ed parts for mechanical and electric equipment to be installed . In 1999 , a world record of annual concrete placement of 4.585 Mm3 was set . In 2000, it is planned to place 5.4 Mm3 of concrete and to install 38 000 t of metal works . Construction equipments and layout of cons truction site , concrete production and its temperature control, metal w orks, mechanical and electric equipments in the second stage constructi on are presented.