Gas injection type slurry pipe-line transportation method and device

Abstract

A gas injection type of slurry pipeline transportation method relates to a novel method which injects the gas into the sediment fluid to reduce the transportation resistance of the slurry and the sedimentation of the sediment and improve the transportation efficiency of the slurry. The transportation method comprises that the transportation pipelines which contain the gas injection channels are prepared; the gas injection type of transportation pipelines are connected according to the traditional pipeline connection method; a gas supply device is connected with the gas injection channels; during the transportation process of the slurry, the gas is injected into the sediment fluid continuously; the gas supply pressure is adjusted until the best sediment transportation efficiency is attained; after the transportation of the sediment, the gas continues to be injected into the transportation pipeline until the cleaning of the pipeline is completed. The invention has simple implementation technology and low sediment transportation cost. The invention can not only reduce the sedimentation of coarse sediment in the transportation pipeline, improve the transportation efficiency of the sediment and produce great transportation effect under the working conditions of wide sediment gradation and coarse grain size, but also improve the transportation distance and slurry concentration, reduce the post-processing dehydration working load of the dredging and reclamation and decrease the environmental pollution.

Description

technical field

[0001] The invention relates to a mud pipeline transportation technology, in particular to a gas injection device and method for reducing mud transportation resistance and coarse sediment deposition, and belongs to the technical field of water conservancy engineering. Background technique

[0002] Bank collapses, landslides, and floods carrying a large amount of sediment often reduce the storage capacity of reservoirs and lakes, and the river bed is raised by silting, affecting flood control, causing floods, and deteriorating shipping conditions. Therefore, there is an urgent need for efficient sediment transportation technology. Sediment is transported to a suitable place, and transported to the place as much as possible at one time to prevent secondary pollution of water sources and the environment. At the same time, due to the vigorous development of the economy and infrastructure of cities along the coast and along the river, as well as further urban deve...

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