Managing Yellow River in China - Part 2 of 2

Managing Yellow River in China - Part 1 of 2

Researchgate Homepage of Pu Qi and Honghai Qi

Please visit Pu Qi's RG Homepage at: http://www.researchgate.net/profile/Pu_Qi, 12 publications including preview of my recent book can be downloaded.

Please visit Honghai Qi's RG Homepage at: http://www.researchgate.net/profile/Honghai_Qi
21 publications can be downloaded.

Yellow River's Four-lane Railroad Bridge Opens

ZHENGZHOU, May 16 (Xinhua News) -- The first four-lane railway bridge over the Yellow River, China's second longest, was put into operation on Friday, replacing a two-lane construction which had been in service since 1960.The new bridge in Zhengzhou, capital of central Henan Province, is about 100 meters away from the old one. The 2,200-meter-long bridge is resistant to big floods and has a life span of 100 years, said Cheng Xiang'en, a local railway bridge official. Transfer from the old bridge to the new one caused suspension to the Beijing-Guangzhou railway for four hours 30 minutes and affected 45 trains. Two lines of the bridge are for Beijing-Guangzhou railway while the other two are for intercity trains between Zhengzhou and Jiaozuo, a city in Henan. The designed speed for trains from Beijing to Guangzhou on the new bridge is 160 km per hour, compared with 110 km per hour for passenger trains and 55 km per hour for cargo trains on the old bridge. The designed speed for Zhengzhou-Jiaozuo intercity trains on the bridge is 250 km per hour. Operation of the new bridge will boost capabilities, said Li. Construction of the bridge began in October 2010.

My Volunteer Photo Back in Beijing in 2000

International Commission on Large Dams (ICOLD) 68th Annual Meeting  (14~18 September 2000)  20th Congress (19~22 September 2000), Beijing, China. 

http://www.chincold.org.cn/chincold/lib/zt/icold2000/

Tunnel under Yellow River: South to North Water Diversion Project

The central, or middle, route is from Danjiangkou Reservoir on the Han river, a tributary of the Yangtze River, to Beijing. The project involves raising the height of the Danjiangkou dam (increasing the dam crest elevation from 162 m to 176.6 m above the sea level), in order to raise the water level in the reservoir from 157 to 170 m above the sea level.

The middle route is built on the North China Plain. The canal is to be constructed so that water can flow all the way from the Danjiangkou Reservoir to Beijing by gravity, without the need for pumping stations.The main engineering challenge is to build a tunnel under the Yellow River. Construction on the central route began in 2004. In 2008 the 307 km-long northern stretch of the central route was completed at a cost of US$2 billion. Water in that stretch of the canal does not come from the Han River but from reservoirs in Hebei Province, south of Beijing. Farmers and industries in Hebei had to cut back water consumption to allow for water to be transferred to Beijing.

The whole project was just completed earlier this year. This has recently been set back to allow for more environmental protections to be built. A problem is the influence on the Han River (below the Danjiangkou Dam), from which approximately 1/3 of the water is diverted. One long-term consideration is to build another canal to divert water from the Three Gorges Dam to Danjiangkou Reservoir.

Analysis of Channel Scouring and Deposition of the Lower Yellow River (Part III)

 

 

 

 

Analysis of Channel Scouring and Deposition of the Lower Yellow River (Part II)

Analysis of Channel Scouring and Deposition of the Lower Yellow River (Part I)

First Descent of the Yellow River in 1987

In the year of 1987 from April 30 to September 25, there was a first successful source-to-sea descent without power of the whole 5,464 km long yellow river by three domestic teams from Beijing, Ma'anshan and Luoyang. The total vertical drop of this descent has reached 4,831 meters. Seven team members drowned in the steep upper reaches of the river. The Beijing team lost one member, the Ma'anshan team lost two members, and the Luoyang team lost 4 members. An descent was even made of the Hukou Waterfalls, the largest fall with approximately 50 meters drop on the yellow river, with the brave Chinese rafters dying in the attempt.