Self-starting type side slope siphoning drainage system

Abstract

The invention provides a self-starting type side slope siphoning drainage system. When a siphoning drainage method is used, in the dry season with little rainfall, the underwater water level is lowered, no water on a slope body needs to be drained through the siphoning effect, the siphoning drainage system is in an inoperation state, air dissolved in water can be separated out in a bubble form and is accumulated in a siphon continuously, the vacuum degree in the siphon is lowered, and thus the problem that siphoning is difficult to start again or even the siphonage disappears is caused. The system is composed of a vertical type dyke, an air chamber, the siphon, an exhaust pipe, a blowdown pipe and check valves. The air chamber is arranged at the top of the vertical type dyke. One end of the siphon extends into the position below the underwater water level of a side slope, and the other end of the siphon penetrates through the air chamber and extends into the position below the sea level. One end of the exhaust pipe extends to the position below the underground water level of the rear edge of the side slope, and the other end of the exhaust pipe is connected with the air chamber. The blowdown pipe is arranged at the upper end of the air chamber. The exhaust pipe and the blowdown pipe are both internally provided with the check valves.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering, in particular to a drainage system for coast 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...

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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