国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

National

Regional

Taiwan, HK, Macao

Special Coverage

Focus

Society

Profiles

China Yangtze Three Gorges Project (TGP) introduction

Updated: 2007-04-16 10:29

TGP is a multi-objective development project with great benefits in flood control, power generation, and navigation and so on. The project consists of river dam, spillway structures, powerhouse, buildings for navigation, etc, and organized by the scheme officially briefed as “developed in one scale, completed in one time, water-storage bystages, and continuous mgiration”. The dam is concrete gravity dam , with the spillway in the middle, and the power house and non-overflow section at both sides . The axial length of the dam is 2309.47m, the crest height is 185m, and the maximum height of the dam is 181m. With a normal storage level at 175m, the total capacity of the reservoir reaches 39.3 billion m 3 , of which the effective flood control capacity reaches 22.15 billion m 3 .

The total period of TGP construction is 17 years, which can be divided into three phases. Phase I (1993~1997) was designed mainly to do advance work for project construction and excavation of diversion channel with the river close-off as the milestone. Phase II (1998-2003) was mainly designed for construction of spillway and left-bank power house and the ship lock, with the completion of initial water storage, commercial operation of first batch of generators and ship lock open to navigation as several significant milestones of this phase. Phase III (2004-2009) has the main task of construction of right-bank dam and powerhouse, which is symbolized as the commercial operation of all the generator units and completion of the project.

 

 

 

   Previous page 1 2 3 Next Page  

   Previous page 1 2 3 Next Page