The natural calendar of Tianfu 丨 "Yin Daji" will let Chengdu drink Dadu River water (August 20, 2022)

Jinshashui shot Yunya warm, and Dadu Bridge was cold.

I like Mount Mountain for thousands of miles, and after the three armies, they will make their faces.

Modern Mao Zedong

Seven Laws · Long March

Dadu River, known as Mo Shui in ancient times, is an important tributary of the upper reaches of the Yangtze River.

This meandering river is well known for the Red Army's breakout and "Dadu Bridge Crossing Cold". Nowadays, the advantages of water energy resources in the Dadu River Basin are prominent and are popular.

The Dadu River is above the Luding or above; it is the middle reaches of the Tongtong Street from Luding to Leshan City; According to statistics from the observation data of the hydrological station in the lower reaches, the Dadu River has an average of 1510 cubic meters per second for many years, and the average runoff volume of many years is 47.3 billion cubic meters. The runoff mold is equivalent to 10 times that of the Yellow River. The average annual runoff also exceeds the Yellow River.

The resource endowment is excellent, and it is destined to be extraordinary in the Dadu River. The Dadu River has a large gap, fast flow rate, deep cutting, excellent water quality, and small sediment, which is very suitable for hydropower development. According to statistics, the theory of hydraulic resources in the Dadu River (Shuangjiangkou -Tongjiezi Section) reached 19.77 million kilowatts, ranking fifth among the 13 major hydropower bases planned by the state.

In addition to the abundant water power resources of the Dadu River, its tributaries, small Jinchuan, gas ditch, Tianwangou, Nanpoyu River, Niuri River and other 6 tributaries have exceeded 500,000 kilowatts.

The Dadu River Water system is distributed with feather -like distribution, and the runoff is mainly formed by rainfall, and some of them are supplied by snow melting. The Dadu River Basin has a large area and good vegetation. The fourth discipline of the upper reaches is conducive to lower seepage and stagnation. The runoffs have not changed much during the annual annual annual distribution.

Due to the abundant water volume of the Dadu River, the South Water Diversion Western Line Project and the Daji Dajin Project in Sichuan Province are planned to divert water from the Dadu River. Taking Daji Ji as an example, the project plans to divert water from the Dadu River to the Minjiang River Basin, with an average diversion of 2.707 billion cubic meters for many years.

In the future, in the Dujiangyan water supply area, the water resources allocation pattern of water resources that are guaranteed by the Dujiangyan of the Minjiang River and the Daji Daji project will be constructed to meet urban and rural life and industrial water supply, take into account agricultural irrigation, and create conditions for improving the ecological environment of the water. The water supply area of ​​Yuxi River along the line.

※ The runoff module is the runoff flow generated by the unit time in the unit watershed.