Sump dredging system and mode

Abstract

The invention relates to a sump dredging system and a sump dredging mode. The invention aims at providing the sump dredging system and the sump dredging mode with the advantages of convenience for operation, less energy consumption and high efficiency. The technical scheme is as follows: the sump dredging system is characterized in that a sump is internally provided with a drainage facility, a sand-containing water flow collecting pipe is buried in a place close to a lower region on the bottom of the sump; a bottom plate of the sump is provided with a slope with certain inclination, a grab bucket type dredging device is arranged above the sump and corresponding to the lowest part of the bottom plate; and a sediment density and sediment accumulation height measurement system and a sediment collection high-pressure washing system are arranged at the bottom of the sum. The sump dredging system and the sump dredging mode are suitable for water and electricity and water conservancy projects, especially suitable for dredging sediments on the bottom of a sump in an underground power plant, a dam body and a plunge pool, dredging sediments on the bottom of the sump of a water pumping pump station, and is also suitable for regions such as water taking pools of various diversion works and sedimentation basins of a sewage treatment plant.

Description

technical field [0001] The invention relates to a water collection well dredging system and a dredging method thereof. It is suitable for hydropower and water conservancy projects, especially for the cleaning of the sediment at the bottom of the sump well in the underground powerhouse of the hydropower station, the dam body and the water cushion pond, and the cleaning of the sediment at the bottom of the sump well of the pumping station. It is also suitable for the water diversion project Intake ponds and sedimentation ponds of sewage treatment plants and other areas. Background technique [0002] Hydropower stations and pumping stations are generally equipped with water collection wells for discharging leakage water from workshops and units, and some are also provided with water collection wells for maintenance and drainage of units. The curtain grouting around the plant during the construction period may cause a large amount of mud to seep into the water collection well. ...

AI Technical Summary

Problems solved by technology

[0005] Considering the safety point of view of current hydropower station design, the position of the outlet of the drainage pipe is at a higher position, especially for a relatively large-scale power station or pumping station, the volume and depth of the water collection well are larger, and the selection of larger Capacity and high lift sewage pumps are difficult, and even in some cases, it is impossible to choose a suitable submersible sewage pump

However, the water collection wells in some areas of the power station, such as the water collection wells in dams and pad ponds, are relatively far away from the pressurized water source and compressed air source, so it is more difficult to set them up separately, and the drainage head is relatively high, and they cannot be selected. Suitable type of sewage pump

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