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Author:Youth Hubei Time:2022.07.08

National Key Water Conservancy Project

South Water Diversion Middle Line Guide to Jianguhan Project

Construction officially started in Danjiangkou City, Shiyan

The water will be drained from the Yangtze River to the Hanjiang River for supply

To ease the water use pressure of the Danjiangkou Reservoir

Starting site map

Introduction to Jianguhan project is

The first construction project of the Subsence of the South Water and North Diversion

It marks the construction of the follow -up project of the South Water

Officially kicked off

The project enters the Hanjiang River from the Three Gorges Reservoir area of the Yangtze River

Cross from south to north along the line

Yiling District, Yichang City

Baokang County, Gucheng County, Xiangyang City

He Danjiangkou City, Shiyan City

Leading Jiang Buhan is a comprehensive advancement

The high -quality development of the follow -up project of the South Water

Accelerate the construction of the main skeleton of the national water network

Important iconic projects of the arterial artery

The total investment of the project is 58.235 billion yuan

The total construction period of design and construction is 108 months

Engineering design water diversion flow rate 170 cubic meters per second

After the completion

Along this water portetic tunnel about 194.3 kilometers long

There will be 3.9 billion cubic meters of Yangtze River water every year

Remesered from the Danjiangkou Dam Dam from the Three Gorges Reservoir to the lower reaches

It will increase the northern transfer of the first phase of the mid -line project

At the same time to the middle and lower reaches of the Hanjiang River

Quotation of Hanji Weifei Project and hydration along the line

Engineering significance

Why build such a project

What are the points and difficulties of this project construction?

What are the positive significance to the northern water area?

Look at the Yangtze River Water Conservancy Committee

Changjiang Design Group expert

In -depth interpretation

The Yinjiang Buhan Project will closely connect the South -to -North Water Diversion Project with the two major "heavy weapons of the country" of the Three Gorges Project, further open up the water transmission channel of the Yangtze River to the north, promote the effectiveness of mid -line engineering, improve the water supply guarantee rate of mid -line projects, alleviate the contradiction between the supply and demand of water resources in the Hanjiang River Basin, The problem improves the weakening of water resources deployment in the Hanjiang River Basin and the problem of water ecological environment in the middle and lower reaches of the Hanjiang River. The connection of the Yangtze River, the Hanjiang River Basin and the North China region of the Yinjiang Buhan Project will improve the water network pattern. It will play an important role in ensuring the security of national water security, promoting economic and social development, and the establishment of a new development pattern of services.

The first is to greatly improve the water supply capacity and water supply guarantee rate of the first phase of the mid -line. After the implementation of the Jiangzu and Han Dynasty, it can make full use of the existing mid -line first -phase total dry canal water transmission capacity. The northern regulation of the mid -line can be increased by an average of 9.5 billion cubic meters of the first phase of the project planned to 11.51 billion cubic meters. The second is to greatly improve the ability of the Hanjiang River Basin and regional water resources. After the implementation of the Jiangjin and Hanfu project, it replenished 610 million cubic meters of water from the middle and lower reaches of the Hanjiang River. The project water was replenished by 300 million cubic meters along the line, which effectively promoted the construction of the ecological economic belt of the Hanjiang River Basin.

The third is to create conditions for the large -term water adjustment scale for the introduction of Hanji Wei. After the implementation of the Jiangjiang and Nuxhan project, the average annual water diversion project of the Hanji leading the Hanji -Weiwei project can increase from the recent 1 billion cubic meters to 1.5 billion cubic meters to effectively ensure the safety of water supply in the Guanzhong Plain.

The fourth is to further optimize my country's water resources allocation pattern. After the implementation of the Yinjiang Supplement and Han Dynasty, the Three Gorges Reservoir and the Danjiangkou Reservoir will be connected to the water transmission channel of the Yangtze River to the north.

Engineering technical characteristics

The Jiangu and Han Dynasty project is currently the longest -built -by -length tunnel tunnel under construction in my country. The project single hole is 194.3 kilometers long; it is the longest long -range tunnel tunnel in China. Mi; it is the tunnel with the largest number of TBM construction in the one -time investment in my country under construction, with 9 TBMs of 12 meters in diameter. Cubic meter; the largest long -distance long -distance traffic tunnel tunnel in my country under construction, the maximum diversion flow of 212 cubic meters/s; it is the longest long -range tunnel tunnel tunnel in my country with the largest comprehensive difficulty in construction, the maximum burial depth of 1182 meters, the maximum burial depth of 1182 meters,, the maximum burial depth is 1182 meters. 45%of the cave sections with a depth of more than 600 meters, facing multiple challenges such as strong rock explosion, mud, large breaks, soft rock deformation, high temperature, toxic gases and other challenges.

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