What are the top ten projects under construction in China?

10 key project China Railway Engineering Corporation currently has 2,300 projects under construction and nearly 3,000 projects under management. Among them, it has undertaken more than 30 national key construction projects, including Qinghai-Tibet Railway, Hangzhou Bay Bridge, Yiwan Railway, Beijing-Shanghai High-speed Railway (Nanjing Dashengguan Yangtze River Bridge), Beijing-Tianjin Intercity Rail Transit Project, Wuhan-Guangzhou Passenger Dedicated Line, Zhengxi Passenger Dedicated Line, Shijiazhuang-Taiyuan Passenger Dedicated Line, Wenfu Railway, Xiangyu Railway Second Line, Beijing Olympic-related projects, Wuhan Yangtze River Tunnel Project, subway and track projects in key cities, and South-to-North Water Transfer Project. 1, Qinghai-Tibet Railway. The total length of the Golmud-Lhasa section of the Qinghai-Tibet Railway is1142km, and the area where the line passes is 965km above sea level, with the highest Tanggula Pass being 5072m. Frozen soil is all over the whole line, which is the highest railway in the world at present. The Qinghai-Tibet Railway officially started construction on June 29th, 20001year. The first, second, third, fourth, fifth, eighth bureaus of China Railway, tunnels, bridges, electrochemical bureaus and construction engineering groups affiliated to the head office participated in the construction. A total of 654.38+0.45 billion yuan was undertaken, accounting for 48% of the total project value. Among them, the total length of offline construction is 506.5km, accounting for 46% of the total length of the new line110 km; The track laying length of the main line is 668km, accounting for 61%of the total length of the new line; The total length of supervision tasks undertaken by Sainanin and Northwest Institute is 320km. In the post-station project, undertake 80% construction tasks of power, communication and signal; Senanen and Northwest undertook some scientific research tasks. Key projects include the world's longest frozen soil tunnel-Kunlun Mountain Tunnel, the longest tunnel of Qinghai-Tibet Railway-Yangbajing 1 Tunnel, the first key control project of Qinghai-Tibet Railway-Xueshuihe Bridge, the first bridge at the source of the Yangtze River-the landmark projects of Qinghai-Tibet Railway and Lhasa-Lhasa River Bridge, the world-famous Lhasa Railway Station, the crossing between Hoh Xil and Kunlun Mountain in Tanggula No Man's Land, and the construction of Qinghai-Tibet Railway. On July 1 day, 2006, the Qinghai-Tibet Railway was officially completed and opened to traffic, and it is currently being summarized and liquidated. 2. Hangzhou Bay Bridge. Hangzhou Bay Cross-sea Bridge is the longest cross-sea bridge in the world at present, with a total length of 36 kilometers, starting from Haiyan in Jiaxing in the north and reaching Cixi in Ningbo in the south. The total investment of the project is about11800 million yuan. China Railway Second Bureau, Fourth Bureau and Bridge Bureau jointly participated in the construction. China Railway Second Bureau is responsible for the overall prefabrication and erection of 404 simply supported box girders of 50m. At present, the approach bridge has completed 16 cap, 16 pier and 404 50m precast box girders, of which 267 have been poured and 239 have been erected. The Bridge Bureau of China Railway Engineering undertook the 8th contract section of Hangzhou Bay Bridge, namely, the middle approach bridge, the south approach bridge, the underwater bottom pier area and the superstructure of the high pier area, with a total length of 18.27km, which is the largest section of Hangzhou Bay Bridge. At present, 320 pieces of 540 70m box girders have been poured and 300 pieces have been erected. China Railway Fourth Bureau is responsible for the construction of 224 piers and abutments. At present, 80% has been completed. 3. Yiwan Railway. Yi (Chang) Wan (Zhou) Railway is one of the "eight vertical and eight horizontal" main skeletons of China railway network, an important part of Shanghai-Hanrong Expressway and an important traffic link connecting the eastern and central parts of China. The main line is 377. 128km, and the length of bridge and tunnel accounts for 72.66% of the total length of the line. The project is arduous, the geological conditions are poor, the technology content is high, and the construction is difficult. The first, second, third, fourth, fifth, tenth and bridge and tunnel bureaus of China Railway Engineering participated in the construction. 9 key projects: Yichang Yangtze River Bridge, Wanzhou Yangtze River Bridge, Baozhen Tunnel, Yesanguan Tunnel, Dazhiping Tunnel, Luzhuba No.2 Tunnel, Yunwushan Tunnel, Baziling Tunnel and Yesanhe Bridge. At present, 80% of the bridge projects have been completed, and the main projects of Yichang Yangtze River Bridge and Wanzhou Yangtze River Bridge have been completed. 70% of the tunnel project has been completed. The workers involved in the construction overcame the unfavorable factors such as complex engineering geology and poor living conditions, and the project construction was smooth. 4. Nanjing Dashengguan Yangtze River Bridge (Beijing-Shanghai high-speed railway). Nanjing Dashengguan Yangtze River Bridge is the main channel for China's first high-speed railway-Beijing-Shanghai high-speed railway to cross the Yangtze River. It is also an important channel for Shanghai high-speed railway to cross the river, and will also become a necessary channel for rail transit on both sides of Nanjing Yangtze River. Nanjing Dashengguan Yangtze River Bridge is located in Dashengguan, Nanjing, 20km upstream of Nanjing Yangtze River Bridge, with a total length of about 9.273km It is the control project of Beijing-Shanghai high-speed railway and an important part of Shanghai-Han Rong railway expressway and Nanjing railway hub. Construction of China Railway Bridge Bureau. In May 2006, construction started on 10, and bored piles for 6# and 8# main piers 10 were completed at the end of June. 5. Beijing-Tianjin Intercity Rail Transit Project. The Beijing-Tianjin intercity rail transit project starts from Beijing South Railway Station and ends in tianjin railway station, with a total length of 1 18.296km, which is divided into two sections: Beijing and Tianjin. At present, this is the first passenger dedicated line with a speed of 350 kilometers per hour in China. It has the characteristics of high technical standard, short construction period and difficult demolition. China Railway Second Bureau, Fourth Bureau, Sixth Bureau and Bridge Bureau participated in the construction. At present, the bridge production has entered normal construction, and 23 beams have been made. Beijing Ring Road Bridge 15.594km, Liangshuihe Bridge 21.563 km; Very long. The length of Yangcun Bridge is 36.490 kilometers, and the construction of foundation bored piles has begun. 6. Wuhan-Guangzhou Passenger Dedicated Line. The line starts from Wuhan Station in the north and ends at New Guangzhou Station in the south, with a total length of 977.7km. The key projects include Tianxingzhou Bridge, Dayaoshan 1 # Tunnel (10/40 m), Liu Yanghe Tunnel (10/00 m) and Wu Jian Dashan. The first, third, fourth, fifth and eighth tunnel projects of China Railway No.1 Bureau participated in the construction. Key projects are progressing smoothly; General projects are preparing for construction, and some projects have just started. Especially, Tianxingzhou Bridge, located downstream of Wuhan Yangtze River Bridge, is the world's first long-span cable-stayed bridge for passengers and goods, which can bear 20,000 tons of load at the same time, and it is the largest highway-railway bridge in the world at present. It is the first long-span cable-stayed bridge in China that can meet the operation of high-speed railway. The main span of this bridge is 4657 meters, ranking first among cable-stayed bridges used for roads and railways in the world today, with a main span of 504 meters. The main span of China's highway-railway dual-purpose bridge has been spanned from 300 meters to 500 meters. After opening, the target speed of the train can reach 200 km/h and the target speed of the car can reach 80 km/h, which will be built by China Railway Bridge Bureau. 7. Beijing subway Olympic branch line. The Olympic branch line of Beijing Metro is 4.398 kilometers long, and there are three stations from south to north: Olympic Sports Center Station, Olympic Park Station and Forest Park Station. This project is a construction project invested by China Railway Engineering Corporation and undertaken by China Railway Third Bureau and Ninth Bureau. This project is an Olympic project, the most important project in Beijing and the key project of the head office. The current construction progress is normal. 8. Wuhan Yangtze River Tunnel Project. Wuhan Yangtze River Tunnel Project is the first municipal tunnel on the Yangtze River, with a total length of 3630m, which is constructed by slurry shield. On October 28th, 2004165438+/KLOC-0, the main shield machine was being installed, 800 segments were prefabricated and the mud water treatment system was installed. 9. Shijiazhuang-Taiyuan Passenger Dedicated Line. Shijiazhuang-Taiyuan Passenger Dedicated Line starts from Shijiazhuang North Station and ends at Taiyuan Station, with a total length of 188.4km. The Tunnel Bureau of China Railway No.1 Bureau, No.1 Project Department, No.3 Project Department and No.5 Project Department participated in the construction. Key projects include Taihang Mountain Tunnel. The construction is normal at present. 10, the second double line of Hunan-Chongqing Railway. The second line of Xiangyu Railway starts from Xiangfan City, Hubei Province, passes through Laohekou and Shiyan City, and reaches Yanxian County, Hubei Province in the west, with a total length of 235.3km. The first, third, fourth, fifth, sixth, seventh, eighth and tunnel bureaus of China Railway participate in the construction. Key projects such as Maanshan Tunnel, Xindaba Mountain Tunnel, Hanjiang Bridge, Nanhe Bridge, Xinmao Baguan Tunnel and Qujiang Third Line Bridge in Sanhui Town have all started, and the construction progress is normal.