Direct suction type active ventilation and temperature lowering device applicable to many-year permafrost embankment

Abstract

The invention discloses a direct suction type active ventilation and temperature lowering device applicable to many-year permafrost embankment, and belongs to the field of many-year permafrost embankment maintenance. The direct suction type active ventilation and temperature lowering device comprises a ventilation pipe, an air suction fan, a hollow post, a wind chasing device and a wind energy conversion device, wherein the hollow post is fixed beside the embankment; the ventilation pipe is buried in the embankment; an air outlet is communicated with the air inlet end of the hollow post; the air energy conversion device and the wind chasing device are arranged on the top of the hollow post. The direct suction type active ventilation and temperature lowering device applicable to many-year permafrost embankment solves the problems of a conventional ventilation pipe embankment that the ventilation efficiency is low; the blockage failure can easily occur; the installation mode is single; the applicable range is narrow; the conventional ventilation pipe embankment cannot be used in many-year permafrost field wide-breadth embankment.

Description

technical field [0001] The invention belongs to the field of maintenance of permafrost subgrades, in particular to maintenance of wide subgrades in permafrost sites. Background technique [0002] Although the world has built railways in permafrost regions for nearly a hundred years, the disease rate of current operating lines is still about 30%. For example, in Russia, the disease rate of the second Siberian Railway built in the 1970s was 27.5% in 1994, and the disease rate of the first Siberian Railway in 1996, which had been in operation for nearly a hundred years, was 40.5%; The railway disease rate in the soil area is as high as 40%. Due to the complexity of things, many thorny technical problems that have long plagued subgrade engineering in permafrost regions have not yet been resolved. Among them, subgrade settlement and deformation are the main problems of highway and railway engineering. For example, the annual subsidence of a certain section of road in the north ...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to propose a direct suction active ventilation and cooling device suitable for permafrost subgrades, which solves the problem of low ventilation efficiency of traditional ventilation pipe subgrades, easy blockage failure, single installation mode, and narrow adaptable surface, which cannot be applied to The problem of wide subgrades in permafrost sites, especially expressways, can effectively control the settlement of high-temperature permafrost highway subgrades

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