Slope drainage structure and method

Abstract

The invention relates to a slope drainage structure and method. The slope drainage structure comprises a slope, drilled holes, drainage grooves and drainage pipes, wherein the drainage grooves are formed in the slope surface of the slope; a plurality of groups of drilled holes are distributed and formed inside the slope; each drilled hole is divided into a filling section and a water permeable hole section; each filling section is filled with water absorption expansion fillers; a magnetic pipe is fixedly arranged at the bottom end of each water permeable hole section; and drainage pipes are arranged in the drilled holes. The slope drainage structure adopts a double-water-drainage-pipe mode. When water in a cavity of the water permeable hole section is little, the water is directly drained through water inlet openings of water drainage pipelines. When the water content of the whole slope is great, the water absorption expansion fillers expand through absorbing water, telescopic soft pipe sections are driven to extend, the water inlet openings of the water drainage pipelines extend to a magnetic pipe butt joint opening to increase the pipe diameter of the drainage pipes and increase the height difference of water drainage openings and a water permeable cavity, and the drainage flow rate is increased; and after water quantity reduction through sufficient drainage, the water absorption expansion fillers are restored, the telescopic soft pipe sections are restored under the effect of magnetic force, and the water inlet openings are separated from the butt joint opening.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to a slope drainage structure and method. Background technique [0002] Rainfall-type landslides are widely distributed in my country, including the Yunnan-Guizhou-Sichuan area, the loess area, and the southeast coastal areas, especially shallow soil landslides often occur in the southeast coastal areas of Zhejiang, Fujian, and Jiangxi. Taking Zhejiang Province as an example, because Zhejiang is greatly affected by typhoons every year, there is a lot of rainfall from July to September every year, the soil on the surface of the mountain is full of water, the weight of the soil increases, and the mechanical properties are greatly reduced. In addition, in recent years A large number of human engineering activities such as excavation of roads, railways, and civil buildings have finally led to frequent landslides. Generally speaking, the volume of this kind of landslide is not ...

AI Technical Summary

Problems solved by technology

Surface drainage measures such as surface drainage ditches and blind drainage ditches have limited drainage capacity and can only be used for slope drainage, and cannot discharge groundwater that infiltrates into the interior of the slope; water collection wells require power and regular management, which consumes a lot of energy and costs. High; due to the small inclination angle of the horizontal drainage hole, it is easy to be blocked during the natural drainage process, which affects the long-term effectiveness of the drainage channel; the construction period of the underground drainage hole is long, the process is complicated, and the cost is high

Therefore, there is still a lack of methods for absorbing and draining groundwater from slopes, and it is still a matter of urgency to explore new technologies for cost-effective slope drainage.

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