Water-resistant ventilation type protective structure for roadbed slope

Abstract

The invention discloses a water-resistant ventilation type protective structure for a roadbed slope. The water-resistant ventilation type protective structure for the roadbed slope comprises a plurality of slope protecting plates arranged on the roadbed slope, wherein the multiple slope protecting plates are distributed on the roadbed slope in a multilayer mode and all extend in the longitudinal direction of a roadbed, one lateral edge, far away from the roadbed slope, of the slope protecting plate at the upper layer extends to the upper portion of the slope protecting plate at the lower layer, one lateral edge, near the roadbed slope, of the protective plate at the top layer is connected with a road shoulder in an abutting mode, one lateral edges, far away from the roadbed slope, of the multiple slope protecting plates are inclined downwards, a plurality of first supporting frames distributed at intervals are arranged under the multiple slope protecting plates, the upper ends of the first supporting frames are connected with the bottom of one side, far away from the roadbed slope, of the slope protecting plate at the upper layer, and the middles of the first supporting frames are connected with the slope protecting plate at the lower layer. Under the condition of not affecting ventilation of the roadbed, the water-resistant ventilation type protective structure for the roadbed slope can effectively prevent rainwater from seeping into the roadbed from the roadbed slope and prevent a frozen soil foundation and a loess foundation from being corroded by water, thereby protecting the stability of the frozen soil foundation and the loess foundation.

Description

technical field [0001] The invention relates to a roadbed slope protection structure, in particular to a roadbed slope water-blocking and ventilating protection structure. Background technique [0002] There are many permafrost regions in our country, and the thawing and settlement of permafrost under road and railway subgrades is the main factor causing insufficient stability of subgrades. For example, the Golmud-Lhasa section of the Qinghai-Tibet Railway will pass through 632km of permafrost, of which 237km is in high-temperature permafrost (annual average ground temperature ≥ -1°C). Therefore, roads in cold regions will face severe permafrost problems. [0003] In order to avoid the accumulation of heat inside the subgrade of the frozen soil section of the road in cold regions, technicians use block stones to fill the subgrade. The ventilation and convection on both sides of the subgrade can take away the heat in the subgrade, thereby avoiding the thawing of the permafro...

AI Technical Summary

Problems solved by technology

However, the side slope of the rock-filled subgrade has large gaps, and rainfall and snow water can enter the interior of the subgrade through the huge pores of the side slope and infiltrate into the permafrost layer, resulting in the melting of the permafrost and frost heave of the subgrade.

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