A device for assisting slope drainage by using a perforated cylinder

Abstract

A device for assisting in side slope water drainage through a cylinder with holes is composed of the cylinder with the holes, an air chamber, a siphon, an exhaust pipe, an air supplementation pipe and a check valve. Under the effect of waves, the liquid level in the air chamber violently vibrates. When the liquid level in the air chamber falls, the pressure intensity in the air chamber becomes low, air is supplemented through the air supplementation pipe, the water level at the position of a water outlet of the siphon falls, the vacuum degree in the siphon is increased, power is provided for the siphoning effect, and even when the underground water level of a side slope falls to a certain range, the siphoning effect temporarily stops and the underground water level rises again, the siphoning effect can automatically recover, and unceasing water drainage of the side slope is ensured. When the liquid level in the air chamber rises, the pressure intensity in the air chamber rises, air discharged out of the exhaust pipe enters a soil body on the rear edge of the side slope, a non-saturated region is formed, the flow leakage route of underground water of the side slope is changed, water flow is made to flow out of the slope surface, and therefore the underground water level of the side slope is lowered.

Description

technical field [0001] The invention belongs to the field of slope engineering, in particular to a drainage device for coastal slopes. Background technique [0002] my country has a vast territory, complex geological topography, and frequent geological disasters, among which landslide disasters pose a huge threat to human production and life. The occurrence of most landslide hazards is related to the change of groundwater level. The rise of the groundwater level leads to an increase in the bulk density of the landslide, a decrease in the effective stress of the sliding surface, and a decrease in the shear strength, which in turn leads to the instability of the landslide. For slopes, when the water level in front of the slope drops rapidly, the groundwater inside the slope seeps out of the slope, generating seepage force, increasing the sliding force, and causing the landslide to become unstable. Therefore, it is very important to discharge the groundwater in the slope in t...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defect that the siphon drainage method in the prior art is used to drain the coastal slope, after the siphon effect is suspended due to the drop of the groundwater level, the vacuum degree in the siphon tube is reduced, and the siphon effect is difficult to recover by itself

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