Reservoir sand pumping method

Abstract

The invention relates to a riverbed cleaning method, in particular to a sand pumping method for riverbed sediment of a heavily silt-carrying river reservoir, and belongs to the field of water conservancy. The IPC number is E02B 3 / 02 and E02D 17 / 16. According to the sand pumping method, a mud sucking device comprising a plurality of reamers and a plurality of spraying guns is adopted for sediment crushing and stirring, so that deposited mud keeps suspended to form a high-concentration muddy water field; meanwhile, auxiliary facilities such as a filtering grid and a protective cover for isolating muddy water are arranged, so that an enough number of muddy water suction operation areas with the relatively stable concentration are formed more effectively, the reservoir desilting efficiency is greatly improved, great social benefits and economic benefits are achieved, and the reservoir sand pumping method is significant.

Description

Technical field: [0001] The invention relates to a method for cleaning a river bed, in particular to a method for pumping sand from a river bed of a sandy river reservoir. The IPC international patent classification numbers of the method are E02B 3 / 02 and E02D 17 / 16, which belong to the field of water conservancy. Background technique: [0002] After the completion and operation of the reservoir hub project, it has played an important role in the development of the local industrial and agricultural economy and flood control safety. Most of the reservoirs, especially the reservoirs of sandy rivers, have high sediment concentration in the flood season, and the sediment deposition in the reservoirs will be more serious, which greatly shortens the service life of the reservoirs, leads to a reduction in water storage, and seriously affects the economic development of industry and agriculture in the basin area. . [0003] Many reservoir projects do not consider sand discharge fac...

AI Technical Summary

Problems solved by technology

Most of the reservoirs, especially the reservoirs of sandy rivers, have high sediment concentration in the flood season, and the sediment deposition in the reservoirs will be more serious, which greatly shortens the service life of the reservoirs, leads to a reduction in water storage, and seriously affects the economic development of industry and agriculture in the basin area.

[0003] Many reservoir projects do not consider sand discharge facilities in their planning and design. In order to discharge the reservoir sediment out of the reservoir, they have to use the reservoir diversion tunnel to discharge sand. However, the elevation of the opening and closing platform of the diversion tunnel inlet gate is generally low, and the reservoir water level must be lowered. many gates to open

Sometimes the reservoir is emptied by mechanical hauling and mechanically assisted hydraulic dredging to remove the silt in front of the dam, but the cost of cleaning the silt per cubic meter is very high and consumes a lot of precious water resources

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