Double-area linkage and siphon drainage desilting basin

Abstract

The invention belongs to the technical field of water and soil conservation, and relates to a double-area linkage and siphon drainage desilting basin which adopts the technical scheme that the desilting basin is of a box structure, the internal space of the desilting basin is divided into a deep area and a shallow area, and the deep area and the shallow area are separated by a separation weir; upper spaces of the deep area and the shallow area are communicated; a water inlet pipe is arranged in the deep area and connected with an outside drainage ditch; a siphon is arranged on the side wall of the shallow area and is an inverted-U-shaped pipe, a water inlet of the siphon is connected with the designed lowest water level in the shallow area, a water outlet of the siphon is connected with a municipal pipe network or a river channel, and the designed lowest water level is higher than the designed water level of the municipal pipe network or the river channel; the height from the overflow point of the siphon to the designed lowest water level is not higher than the water column height supported by one atmospheric pressure; and the highest water level of the water inlet pipe of the outside drainage ditch is larger than the designed overflow water level of the shallow area. In consideration of desilting and water discharging of the desilting basin, sediment sedimentation of the desilting basin is accelerated, water discharged by the desilting basin becomes clear, and automatic water discharging is achieved by means of the siphon principle.

Description

technical field [0001] The invention belongs to the technical field of water and soil conservation, and relates to a sediment treatment technology of a grit chamber at the end of a drainage ditch. Background technique [0002] The construction site under water and soil conservation is usually prone to water and soil erosion under the condition of rainwater and construction water. Due to the large amount of discharged sediment, the grit chamber is easy to silt up, and the muddy water enters the pond and goes straight in and out without enough stay. Therefore, it is difficult for the sediment to settle completely, and part of it is discharged to the downstream river or water body, causing new pollution and making the drainage unable to meet the standard. [0003] The main technical problem existing in the grit chamber at present is that the sediment suspended in the water is not settled sufficiently. Grit chambers are commonly used facilities in soil and water conservation. T...

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Problems solved by technology

[0002] The construction site under water and soil conservation is usually prone to water and soil erosion under the condition of rainwater and construction water. Due to the large amount of sand discharged, the grit chamber is easy to silt up. Therefore, it is difficult for the sediment to settle completely, and part of it is discharged to the downstream river or water body, causing new pollution and causing the drainage to fail to meet the standard

[0003] At present, the main technical problem in the grit chamber is that the sediment suspended in the water is not sufficiently settled

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