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Soil erosion is a form of soil degradation. Soil erosion is a process that occurs naturally on all land.
Soil is the fragile skin on the earth, which anchors all life on the earth. The factors of soil erosion are water and wind, which cause a lot of soil loss every year.
Soil erosion may be a relatively slow process, or it may occur at an alarming rate, leading to severe topsoil loss and gully formation.
The effects of soil erosion are not limited to the loss of fertile land. It leads to increased pollution and sedimentation of streams and rivers, blocking these waterways, leading to a decline in fish and other species, and hydrological drought.
In order to reduce siltation and blockage of water bodies, the best practice is to keep river vegetation undisturbed.
Desilting will increase the storage capacity of the dam and remove accumulated organic matter and nutrients, which may cause algae growth when the dam is filled.
You can use bulldozers, scrapers or excavators on the dry dam foundation to remove the silt, taking care not to damage the dam's seal.
Due to the large amount of material involved and the need for a suitable location to place the excavated material within the economic distance of the reservoir, once the sediment is deposited in the reservoir, excavation may be the best management option.
For small irrigation dams and large hydropower stations, the solution may be very different.
For smaller irrigation reservoirs, a siphon dredger can be used instead of a pump. The mud is located at the lowest possible position downstream of the dam from the water surface of the reservoir.
Many large reservoirs are designed with huge dead reservoirs, which may be filled up within years or decades，the flushing efficiency is low or unacceptable, but if the dredger equipment can be customized according to local facilities, it can be a perfect solution Program.