What is the fundamental work of controlling the Yellow River?

I think it's doing greenery and waterproofing soil erosion.

The fundamental task of controlling the Yellow River is to control soil erosion.

In the 2003 flood season, the "three Yellow Rivers" were linked for the first time and played a huge role in the flood control process. According to the "Three Yellow Rivers" management plan, by 2010, a relatively complete flood control and siltation reduction system will be formed on the Yellow River, to ensure the safety of flood control within the standard, to ensure that water resources are effectively managed, to ensure that the Yellow River continues to flow in ordinary years, so that the area of the Loess Plateau will reach 1.2 billion square kilometers, 160,000 silt dams will be built, and 300 million tons of sediment will be reduced into the Yellow River.

A method of dredging the silted river, this method is to re-blow the sediment at the bottom of the river a thin layer by a thin layer, and lift it to the middle and upper layer of the water flow speed is larger, so that it is mixed into the river water, and wash away with the river water, the river section to be dredged is a section every 250 meters, and four sets of machinery that stir up the sediment are set up on the width of each section, and the sediment is stirred back and forth in each section, and the water of the whole middle and lower reaches of the river section is muddy, and the sediment content in the water increases, the river flows away, and the bottom of the river is also washed down.

For the Yellow River that has been silted up, starting from the estuary, every 250 meters for a short section, set up four mechanisms for agitating and lifting the sediment on the width of each small section, a thin layer of the river bottom mud bottom sediment stirring floating, so that it is mixed into the middle and upper layers of the river water and washed away with the water, all the machinery of the dredging section of the floating sediment works, the river water of the dredging section is muddy, and the high sand content water flows into the sea, thereby washing down the riverbed of the dredging section, the distance of each small section changes with the water flow speed of each small section, and the number of units of the agitation machinery set up on the width of each small section, It varies depending on the width of the river. (2) The machinery of agitating the floating sediment is placed on the pontoon, which can not only stir the sand layer at the bottom of the hard river, but also stir the thin mud that floats and sinks at the bottom of the river.

It should be divided into three aspects: First, river dredging. The second is pollution control.

The third is river water purification. One: river dredging:

The easily blocked part of the river will be used as a key improvement area for dredging and dredging the river. 2. Pollution control

Vigorously punish small and medium-sized enterprises, especially paper mills, that discharge extremely high amounts of sewage to block the source of pollution. Three: River water purification:

The above two steps are the premise of the third step, and the time is the longest, which can be implemented without affecting the water quality, and it needs to be continuously protected and treated to be effective.

The fundamental measures to harness the Yellow River are:

1. Planting forests and grasses, greening the earth, improving the local climate, planting forests and grasses, expanding vegetation coverage, developing ecological economy, combining resource development with soil and water conservation, conserving water sources, maintaining soil and water, preventing soil erosion, improving local climate, reducing flood hazards, increasing soil fertility, and increasing underground runoff.

2. To control the number of population and improve the quality of the population, the Yellow River Basin should pay attention to the effective control of population growth, and at the same time urge citizens to consciously protect the environment and water resources, use water rationally, and save water.

3. Unified planning, coordinated development of the Yellow River's water resources, unified management, overall preparation of the Yellow River's water resources utilization and dispatch plan, taking into account local conditions, giving full play to the role of large-scale water conservancy projects as hubs, and impounding floods to regulate runoff.

4. In order to strengthen the ecological protection of the Yellow River Basin, the Customs will work together to protect and promote the great governance, and solve the problems of lack of water resources and fragile ecological resources of the Yellow River.

5. Establish a joint monitoring and control mechanism for the epidemic of key alert animals and plants in the Yellow River Basin, build a strong national biosecurity quarantine defense line, and prevent the introduction and outflow of epidemic diseases and the invasion of alien species; Intensify efforts to crack down on the smuggling of key sensitive commodities such as "foreign garbage" and endangered species.

6. Strengthen joint risk prevention and control, and promote the development of risk control models, rule refinement, practical application and joint prevention and control for regional characteristic businesses.

The bends of the Yellow River pass through the dusty land in the north, note that it is not sandy land, the flow rate is slow, and the soil is deposited ......The solution, connecting Lanzhou to Sanmenxia section, choosing sand and sand layers to open up the river, fine sand sinking into the river, will prevent soil erosion, and the water quality will be clear. It can be used as a scouring channel. The northern zigzag channel is dredging once every 5 years, and after dredging, the sand and sandy water can be properly introduced, and the river channel should be V type instead of U type, and the sand and sand sediment bottom side can protect the soil and clear water.

Sand and sand should be retained by V-shaped river channels, not U-shaped.

Several platforms can be opened on both sides of the V-shaped shape as stagnant sand and sand.

Sand and dirt should be clearly distinguished.

Lu's method of governing the river.

Sand control leads to the turbidity of the Yellow River, and the sand and sand in the upper reaches of the river should be laid in the river channel with the flow of water to form a sediment layer to protect the soil from collapse, and the sand in the upstream is fixed, and the water flow washes away the soil layer, resulting in the current situation, which is not well treated at all, and it is useless to change the route.

Now that the engineering technology is very developed, the water conservancy department in the north should no longer do the treatment activities of mending the seams.

The first is to reduce and control desertification.

Loess Plateau in northern Shaanxi.

Shaanxi will firmly grasp the "bull's nose" of regulating the relationship between water and sediment, follow the law of vegetation distribution in the Loess Plateau, adhere to the grass to fix sand, forest to block sand, and dam to retain sand, and actively promote the comprehensive management of desertification and soil erosion.

Realize the "double reduction" of soil erosion area and intensity, and the "double reduction" of water and wind erosion, and focus on the implementation of returning farmland to forest and grassland, "three norths."

Major ecological projects such as the construction of shelterbelts, the control of sand sources in Beijing and Tianjin, and the protection and restoration of natural forests, actively promote the construction of silt dams, and continuously reduce the amount of sediment entering the Yellow River, so that "one bowl of water and half a bowl of sand" in the middle reaches of the Yellow River has become history.

The second is to control water and pollution.

The Yellow River's pollution is in the water, the problem is in the watershed, and the root is on the shore. On the one hand, we will make every effort to control water, consolidate the responsibilities of river and lake chiefs at all levels, adhere to the "one river, one policy" and "one lake, one policy", and implement the Wei River.

Pollution prevention and control projects in key tributaries such as the Yan River, Beiluo River, and Wuding River have purified the "capillaries" of the Yellow River.

On the other hand, we will make every effort to control pollution and strictly implement the Yellow River Basin.

The pollutant discharge permit system has improved the capacity of urban sewage treatment, strictly prohibiting the direct discharge of industrial wastewater and urban sewage, and strengthening the comprehensive treatment of agricultural non-point source pollution. On the other hand, we will make every effort to control the source, strictly control the "two high" projects, promote cleaner production, build a green industrial system, advocate a green lifestyle, and reduce pollution from the source.

The third is excellent energy and high yield.

Some areas of the Yellow River Basin in Shaanxi Province are important national energy bases, and at the same time bear the strategic responsibility of ensuring national energy security, as well as implementing carbon peaking.

An important area for the hard task of carbon neutrality.

Shaanxi will take the synergy of pollution reduction and carbon reduction as the general starting point for promoting the comprehensive green transformation of the region, accelerate the pace of energy structure adjustment, promote the clean, low-carbon and efficient use of energy, and strive to create an energy revolution innovation demonstration zone. At the same time, accelerate industrial transformation and upgrading, and vigorously develop strategic emerging industries.

High-tech industries and cultural tourism have embarked on high-quality development with regional characteristics.

A new way. Fourth, benefit the people and benefit the people.

Focusing on the Anlan of the Yellow River, we will accelerate the construction of major projects such as the Dongzhuang Water Conservancy Project and the comprehensive treatment of the Xiaobei main stream of the Yellow River, so that the Yellow River will become a happy river for the benefit of the people. Focusing on the sustainable use of water resources, we insist on determining the city, the land, the people, and the production by water, and strictly implement the dual control of total water consumption and intensity, so as to meet the reasonable water demand for production and living ecology along the route.

To harness the Yellow River, the emphasis is on protection and governance. To harness the Yellow River, it is necessary to implement the strictest water resources management and environmental protection system, formulate and implement a special plan for the protection of the Yellow River Delta, classify important areas and vulnerable areas into the red line of ecological protection, permanently protect the original natural features and unique species resources of the Yellow River Delta, and make every effort to maintain the integrity of the estuarine ecosystem.

In the management of the Yellow River, we adhere to the comprehensive management, systematic management, and source management of mountains, rivers, forests, fields, lakes and grasslands, and coordinate the upstream and downstream, left and right banks, and main and tributaries, and implement joint prevention and control of the water environment. We should do a good job in ecological restoration along the Yellow River, implement wetland management and river ecosystem restoration projects, promote ecological water diversion and ecological water replenishment, and solve the problem of over-exploitation of groundwater. Strengthen the prevention and control of urban domestic pollution, agricultural pollution, and industrial pollution, and do a good job in improving the water environment in estuaries and surrounding sea areas.

To harness the Yellow River, it is necessary to take the system of river chiefs and lake chiefs as important supports, and establish and improve a management system with standardized operation and coordination. Accelerate the construction of the ecological research platform of the Yellow River Delta, actively promote the integration and optimization of nature reserves, continue to carry out special actions for the supervision and inspection of nature reserves, build a "sky-ground integration" monitoring and control system, improve the horizontal connection mechanism between estuarine beaches and the entire delta wetland, and strive to become a world-famous demonstration area for the sustainable development of the great river delta.