River regulation and river regulation and local river regulation. Generally speaking, the purpose of river regulation in the long reach is mainly for flood control and navigation, while the purpose of river regulation in the local reach is to prevent bank collapse, stabilize industrial and agricultural diversion and Bridge upstream and downstream engineering measures. The function of the control and guidance engineering is to restrict the swing range of the mainstream, protect the beach and retain the embankment, guide the mainstream to drain along the designed control wire, which is conducive to diversion and protection of the beach. The function of bank protection project is to prevent the mainstream from scouring high bank or embankment directly, to prevent the high bank from collapsing, to protect the high bank and embankment from collapsing and to prevent the mainstream diversion.
As a pure public welfare water conservancy project, river regulation itself does not produce direct economic benefits, but it produces enormous ecological benefits. River regulation plays an important role in water storage, regulating River runoff, recharging groundwater and maintaining regional water balance. It is a natural "sponge" for water storage and flood control. Wetlands have huge permeability and water storage capacity, can reduce and lag precipitation, reduce and lag flood peak, reduce flood runoff, with reservoir function.
Wetlands in river regulation projects are called "the kidney of the earth", which have a strong ability to purify sewage. Wetlands are one of the most self-purification ecological systems in the natural environment. Wetland water flow rate is slow, conducive to sedimentation of sediments; wetland growth, living in a variety of plants, microorganisms in the same area of purification capacity is 1.5 times that of forests. Therefore, river regulation works can effectively reduce the pollutants in the water, reduce the pollution to the surrounding farmland irrigation and drinking water.
River regulation has the value of controlling soil erosion. The erosion control function of river regulation is embodied in two aspects: one is to reduce soil erosion and protect farmland from flood; the other is to reduce soil fertility loss caused by soil erosion.
River regulation can greatly improve many problems caused by river damage for a long time and play an important role in ensuring the normal production and life of people on both sides of the river. Living and working in peace and contentment can basically guarantee the people on both sides of the river to settle down safely, help to improve the water diversion conditions of various large, medium and small irrigation stations on both sides of the river, and guarantee the irrigation areas on both sides and the water demand of the people's lives.