港珠澳大桥英语演讲PPT学习课件

1、Hong Kong-Zhuhai-Macao Bridge to make the world convenient 姓名 日期 Contents 4、The Immersed Tube Tunnel 2、Features and Difficulties 5、The Significances 1、Brief Introduction 3、Two Artificial Islands 3. 工程总体方案 lThe first major combined bridge and tunnel sea-crossing project in China. lCost approximately

2、RMB 105 billion. lConstruction began in 15 December 2009 at Zhuhai. lWill reduce travel time from Hong Kong to Macau or Zhuhai from over three hours to just half an hour. 1. Brief Introduction Hong KongZhuhaiMacau Bridge: the worlds longest sea-crossing bridge, one of the most challenging constructi

3、ons of its kind undertaken in the world to date. l Two artificial islands l An immersed tube tunnel l The Y-shaped bridge 1. Brief Introduction l Total lenght: 49.97 kilometers l Underwater tunnel: 6.7 kilometers l Bridge over the sea: 23 kilometers Macau Link Road Zhuhai Link Road Offshore Bridge-a

4、nd- Tunnel HK Link Road HK port 1. Brief Introduction 1.the life span of the bridge is set at 120 years. 2.It reportedly can stand magnitude-8 earthquake, scale-16 typhoon as well as the collision with a 300,000-ton ship 1. Brief Introduction this project features a design-and-build contract, coordi

5、nation of the three regional governments in the construction and management, and close attention from the society. Moreover, there are environmental constraints as the alignment runs across the national conservation area for the Chinese white dolphins, as well as complicated navigation traffic condi

6、tions as the route crosses the busiest shipping area of the Lingding Sea. 2.Features and Difficulties Hong Kong-Zhuhai-Macao Bridge is the national key project featured with strategic significance, large involvement, highly difficult level of construction, long construction time, high requirement on

7、 technical design and environmental protection, many participant parties, complex management and coordination. 2.Features and Difficulties 3. Two Artificial Islands the West Artificial Islandthe East Artificial Island The East Island has 59 round steel cylinders圆钢筒. The West Island has 61 round stee

8、l cylinders. The diameter of a single cylinder is 22.0m, and the cylinder wall is 16mm thick. The height of round steel cylinder is 40.5m to 50.5m. The round steel cylinder weighs 445t to 507t. 3. Two Artificial Islands 4. The Immersed Tube Tunnel The water resistance ratio must be limited to 10% to

9、 prevent accumulation of sediment at the Lingdingyang Channel, otherwise it will impose serious impact on the Pearl River flow path and flood-discharge capacity, according to a government report. Due to the long distances between the cities, the project is actually a series of bridges and tunnels, c

10、onnected by artificial islands，this was the first time China has built an immersed tube tunnel （沉管隧道）in open waters. The 33 tubes will compose a 5.6-kilometer immersed-tube tunnel, which is designed to be an important part of the bridge. Each of the tube, with a weight of 80,000 tons and a length of

11、 180 meters, takes about two months to build. 4. The Immersed Tube Tunnel 5.The Significances British newspaper “The Guardian” named the megastructure one of its “seven wonders of the modern world near completion.” It will be the first new land transport link between the east and west coasts of the

12、Pearl River, The bridge will benefit the economic development of the whole of the Delta. The bridge will create a regional transport network, improving upon what is considered to be a weak land transport network currently in place The End! Thanks for your attention! Contents 4、The Immersed Tube Tunn

13、el 2、Features and Difficulties 5、The Significances 1、Brief Introduction 3、Two Artificial Islands Hong Kong-Zhuhai-Macao Bridge is the national key project featured with strategic significance, large involvement, highly difficult level of construction, long construction time, high requirement on tech

14、nical design and environmental protection, many participant parties, complex management and coordination. 2.Features and Difficulties The water resistance ratio must be limited to 10% to prevent accumulation of sediment at the Lingdingyang Channel, otherwise it will impose serious impact on the Pear

15、l River flow path and flood-discharge capacity, according to a government report. Due to the long distances between the cities, the project is actually a series of bridges and tunnels, connected by artificial islands，this was the first time China has built an immersed tube tunnel （沉管隧道）in open waters. The 33 tubes will c