What are the advantages and disadvantages of the middle route of the eastern route of the South to N

Advantages: 1 The whole process can be self-flowing water transmission 2 The amount of water is abundant 3 The load of the Three Gorges Power Station is balanced, which is conducive to the safe operation of the generator and improves the utilization efficiency of the Three Gorges Electric Power.

1. The water quality is good, because the water pollution in the middle line is not large; 2. The difference in topography of the middle line is not so big, 3. The amount of water is relatively sufficient, and there is the Three Gorges Reservoir as a water supply guarantee; 4. Strong feasibility, compared with other lines, the construction difficulty of the middle line is relatively small.

Middle: The terrain is smooth, which will not cause problems such as groundwater uplift, and the water supply is also guaranteed (Three Gorges Reservoir). However, the amount of work is large and the investment is large.

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The South-to-North Water Diversion Project is a large-scale project in China that has been planned and constructed for decades to regulate the relatively abundant water resources in the south to the water-scarce areas in the north through measures such as water diversion, water transfer, water balance and transportation, and water replenishment. The South-to-North Water Diversion Project is mainly divided into three water transmission lines: the eastern, the middle and western routes.

Eastern Route: Divert water from the Jianghuai region in the middle and lower reaches of the Yangtze River basin, and transport water to Beijing, Tianjin and other regions through the waterways of the Yangtze River, Huaihe River and Bohai Sea.

Middle route: Divert water from the Three Gorges Reservoir area in the middle and upper reaches of the Yangtze River basin, and transport water to Hebei, Shanxi, Inner Mongolia and other regions through the waterways of the Yangtze River and the Bohai Sea.

Western Route: Divert water from the Yalong River in the upper reaches of the Yangtze River and transport water to Gansu, Shaanxi, Ningxia, Qinghai, Xinjiang and other regions through pipelines.

To sum up, the eastern route of the South-to-North Water Diversion Project is to divert water from the Jianghuai region in the middle and lower reaches of the Yangtze River basin to Beijing, Tianjin and other regions. The middle line is to divert water from the Three Gorges Reservoir area in the middle and upper reaches of the Yangtze River basin to Hebei, Shanxi, Inner Mongolia and other regions; The western route is to divert water from the Yalong River in the upper reaches of the Yangtze River to Gansu, Shaanxi, Ningxia, Qinghai, Xinjiang and other regions.

The starting point of the eastern route project is in Yangzhou, where the hail of the Yangtze River is traveling, and the end point is in Tianjin.

The middle route of the South-to-North Water Diversion Project is a water diversion project that diverts water from the east bank of the Danjiangkou Reservoir in the middle and upper reaches of the Hanjiang River, the largest tributary of the Yangtze River, through the Chengkou Pass in Yangnan, the watershed between the Yangtze River and the Huaihe River Basin, along the Tangbai River Basin and the western edge of the Huang-Huai-Hai Plain, excavates a channel, crosses the Yellow River through a tunnel in Wangcun, Xingyang City, Zhaolunfan River, and goes north along the west side of the Beijing-Guangzhou Railway to Tuancheng Lake in the Summer Palace.

The Tongtian River (the upper reaches of the Yangtze River), the Yalong River (a tributary of the Yangtze River), and the Dadu River are transferred into the Yellow River (Northwest China) by tunnels, that is, water is transferred from the upper reaches of the Yangtze River into the Yellow River.

Eastern Route, advantages: The Beijing-Hangzhou Canal can be used as a water diversion channel, the investment is small, and the construction cost of the stool is low.

Disadvantages: The southern section of the canal is high in the north and low in the east, and it needs to be lifted step by step, which consumes more electricity and has higher operating costs;

There is a large population along the line, and the industry and agriculture are relatively developed, which is easy to cause water pollution.

Middle line, advantages: the whole line can be self-flowing along the terrain to divert water, and the operating cost is low.

Human activities along the route have less pollution to the water environment.

Disadvantages: The water diversion channel needs to be newly repaired, the investment is large, the cost is high, and the construction period is long.

The middle route of the South-to-North Water Diversion Project and the eastern route of the South-to-North Water Diversion Project (Phase I) have been completed and water has been transferred to the northern region. As of now, the western route project is still in the planning stage and has not started construction.

Middle line: From south to north, the main water transmission canal passes through Danjiangkou Reservoir, Nanyang, Pingdingshan, Xuchang, Zhengzhou, Jiaozuo, Xinxiang, Hebi, Anyang, Handan, Xingtai, Shijiazhuang, Baoding, and Beijing.

East Route: The South-to-North Water Diversion Project is the National Strategic East Route Project, referred to as the East Route Project, which refers to a national-level cross-provincial regional project that lifts water from the Jiangdu Water Conservancy Hub in Yangzhou, Jiangsu, passes through Jiangsu, Shandong and Hebei provinces to deliver production and domestic water to North China. The eastern route project plans to divert water from the main stream of the Yangtze River near Yangzhou, Jiangsu Province, and use the Beijing-Hangzhou Grand Canal and its parallel rivers to transport water, connect Hongze Lake, Luoma Lake, Nansi Lake and Dongping Lake, and use it as a storage reservoir.

It crosses the Yellow River to the north and then flows to Tianjin, and the main water transmission line from the Yangtze River to the Beidagang Reservoir in Tianjin is about 1,156 kilometers long [1]. The other road connects to the Huangjiqing Channel through the newly opened Jiaodong water transmission trunk line to the east to supply water to the Jiaodong area. The implementation of the project is divided into three periods, and a total of 21 pumping stations will be built in the first phase of the project, with a construction period of 6 years; In the second phase of the project, 13 pumping stations will be added on the basis of the first phase of the project, with a construction period of 3 years; In the third phase of the project, 17 pumping stations will be added on the basis of the second phase of the project, with a construction period of 5 years.

West Route: The South-to-North Water Diversion Project is referred to as the West Route Water Diversion Project (the project is in the early stage of demonstration and is an unbuilt project), which refers to the long-distance water diversion project from the Yangtze River water system such as the Yalong River and the Dadu River, which are tributaries of the upper reaches of the Yangtze River in Sichuan, to the upper reaches of the Yellow River in Qingdao, Gansu, Ning, Mongolia, Shaanxi, Shanxi and other places, which is a major strategic project to supplement the shortage of water resources in the upper reaches of the Yellow River, solve the drought and water shortage in Northwest China, and promote the governance and development of the Yellow River. The main water diversion line is to use a diversion tunnel to divert water from Bayan Kala Mountain, the watershed of the Yangtze River and the Yellow River, into the Yellow River, and the long-distance tunnel water conveyance adopts an artesian scheme.

The main role of the western water diversion project is to solve the problem of water shortage in the six provinces of Qinghai, Gansu, Ningxia, Inner Mongolia, Shaanxi and Shanxi, and to replenish water to the lower reaches of the Yellow River if necessary. The project was planned to be implemented in three phases, and the plan for the western route was reviewed in 2001. At present, the preliminary research work of Sun Zhiyou of the Western Route Project has not yet entered the process of infrastructure approval.

1. Advantages. Making full use of the waterways such as the Jiangbei Water Diversion Project and the Grand Canal that have been built in Jiangsu, the amount of engineering and investment is small, the technology is simple (the Yellow Hole has already been opened), and the results are fast. large amount of water; The Beijing-Hangzhou Canal can be used to transport water, and the amount of work is small; Most of them are located in the plain area, the ground is chaotic and the beam shape is flat, and the construction difficulty is small; The north of the Yellow River can be artesian.

2. Disadvantages. The area through which it flows is densely populated, the industrial and agricultural production density is high, and the quality of water transportation is poor; The terrain south of the Yellow River is low in the south and high in the north, and water needs to be lifted.

The eastern route of the South-to-North Water Diversion Project is a state-level cross-provincial regional project that lifts water from the Jiangdu Water Conservancy Hub in Yangzhou, Jiangsu Province, passes through Jiangsu, Shandong and Hebei provinces to deliver production and domestic water to North China.

Advantages: It is conducive to solving the uneven distribution of water in the north and south, solving the energy problem and promoting economic development. Promote the rational allocation of water resources.

During construction, the rotten return drives the development of related industries along the line. It is conducive to socialist modernization. Solve the serious problem of water shortage in North China and promote the development of Beijing-Tianjin-Tang Industrial Zone.

Disadvantages: Although Heliyun makes use of the natural channel of the Beijing-Hangzhou Grand Canal, the terrain is higher in North China. The eastern route needs power water diversion, a large amount of work, and a large amount of money.