Swirling pattern gas-disturbance river mouth fine particle sediment dredging device and method

Abstract

The invention provides a swirling pattern gas-disturbance river mouth fine particle sediment dredging device and method. A vertical gas inlet pipeline and a swirling pattern gas disturbance assembly are connected, an externally-connected air compressor leads high-pressure gas into the swirling pattern gas disturbance assembly through the gas inlet pipeline, and the high-pressure gas enters all gaschambers of the swirling pattern gas disturbance assembly and then is sprayed out from nozzles, wherein the spraying direction directly faces a gas guide oblique face of 45 degrees. The oblique faceejects the gas upwards to drive water containing fine-particle sediment to move upwards, and thus the river mouth fine-particle sediment is disturbed for dredging. According to the swirling pattern gas-disturbance river mouth fine particle sediment dredging device and method, the high-pressure gas is delivered to the fine-particle sediment, the fine-particle sediment at the bottom is stirred to the water in the middle and upper layers, thus the process that novel silt soil and floating sediment are continuously fallen, deposited and gradually compacted on a bed face is slowed down, the vertical density distribution of the water containing the sediment is changed, the tide-rising moving distance of the sediment in the water containing the sediment is greatly extended, the pressure that thenavigation water depth is insufficient due to navigation channel back-silting is relieved, and the energy consumption cost of an existing navigation channel dredging technology is reduced.

Description

technical field [0001] The invention relates to the field of dredging devices and dredging technology for river (navigation) channels, in particular to a vortex type gas disturbance dredging device for tidal dredging of new silt and floating mud and other fine-grained sediment in the estuary area of ​​the river channel and its dredging device. Matching estuary fine-grained sediment dredging method. Background technique [0002] At present, due to factors such as floods and long-term rainfall that cause sediment to flow with the water, the estuary area of ​​the river is usually silted up by various fine-grained sediments, and this siltation will affect the flood control, drainage, irrigation, water supply, and other factors of the river. For the normal function of navigation and other functions, in order to restore the normal function of the river, it is necessary to carry out dredging and dredging projects to make the river deeper and wider through treatment, and the river w...

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Problems solved by technology

[0007] According to the feedback from field operators after repeated operations for a long time, the above-mentioned technological means in the prior art all rely on power to disturb the consolidation on the river bottom (bed) The silt is transported or transferred through the ship and the supporting pipeline equipment of the ship, and finally thrown into the designated area, so there is a lot of energy consumption in each link, and the technological means under the existing technology can deal with the fine particle mud of the estuary The effect of the sand is not good, and the overall efficiency is low, the energy consumption is large, and the dredging of the fine-grained sediment in the estuary is not targeted enough, so it seriously affects the difficulty and economic cost of the maintenance and treatment of the estuary channel

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