Cascade siphon device and cascade siphon method for preventing air accumulation in siphon tubes with low water head difference

Abstract

The invention discloses a cascade siphon device and a cascade siphon method, which are used for preventing air accumulation in siphon tubes with a low water head difference, and suitable for an inner diameter of 5-8mm of the main siphon tube. The cascade siphon device comprises a main siphon drainage system and a secondary siphon drainage system causing a pulsating flow of the main siphon tube, wherein the main siphon drainage system is composed of a drilled hole, a water permeation tube, a hole-bottom water storage tube and a siphon drainage tube; and the secondary siphon drainage system is composed of a water level fluctuation tube, a secondary siphon tube and a water outlet tube. According to the invention, redundant underground water in a slope stratum is efficiently drained in real time by virtue of the main siphon drainage system; and in case of a low flow speed of the main siphon system due to the low water head difference, the water level fluctuation tube is enabled to generate periodic water level changes through the intermittent working of the secondary siphon drainage system, and the main siphon tube is induced to generate the pulsating flow and prevented from generating the air accumulation due to long-time wall-pressing flow, thus long-term effective running of the main siphon system is ensured.

Description

technical field [0001] The invention belongs to the technical field of water level control, and specifically relates to a device and method for forming a pulsating flow to prevent air accumulation in a low water head difference siphon, which is suitable for controlling the periodic rise of the water level, and is especially suitable for controlling the cycle of slope siphon drainage to control the groundwater level of the slope Sex rises. Background technique [0002] Siphon is a physical phenomenon that uses the force of liquid level difference to push liquid to flow. The liquid at the highest point in the siphon tube flows to the lower nozzle under the action of gravity, and a negative pressure is generated at the top of the siphon, causing the liquid at the upper nozzle to be sucked into the tube and flow to the highest point, so that the liquid flows continuously from the upper container Low container. Maintaining the vacuum at the top of the siphon is the basis for en...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the defects in the existing slope siphon drainage technology, the present invention provides a cascade siphon device and method, which can form pulsating flow when siphoning with low water head difference, and prevent air accumulation in the pipe during the slow flow process of siphon due to low water head difference

The cascade siphon drainage method not only solves the problem of siphon drainage efficiency but also overcomes the problem of air accumulation in the pipe during low water head difference siphon, satisfies the effective siphon drainage of the slope, and controls the rise of the groundwater level of the slope in real time

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