Cold region active ventilation cooling self-recovery slope anchorage structure and construction method

Abstract

The invention belongs to the field of cold region slope support and discloses a cold region active ventilation cooling self-recovery slope anchorage structure and a construction method. The cold region active ventilation cooling self-recovery slope anchorage structure comprises a framework, ventilation anchor pipes and a ventilation system. The ventilation anchor pipes are formed in the mode that anchor pipes are nested in ventilation pipes coaxially through positioning rings and the ventilation pipes are coaxially sleeved with exhaust pipes. The ventilation system is composed of fans, temperature control switches and solar panels, all of which are connected through wires. Slurry is injected into the anchor pipes, passes through slurry outlet holes and is bonded with surrounding stable frozen soil; geogrids, drain pipes and the framework are constructed on the slope surface, and the ventilation anchor pipes penetrate through the framework; the front section of each ventilation anchor pipe is sleeved with a flange base plate and a spring sequentially and is fixed on the framework through an anchorage device; plants are planted in the geogrids, and a drain channel is arranged at the slope toe; the fans are installed at the front sections of the anchor pipes, the temperature control switches and the solar panels are arranged on the framework, and the fans, the temperature control switches and the solar panels are connected through the wires. The cooling effect is remarkable due to automatic air supply, the swelling reduction, shock absorption and self-recovery functions are remarkable, water is drained in time, and development of frozen soil is promoted due to the geogrid slope surface and the plants; the method is easy and convenient to implement, and construction is rapid.

Description

technical field [0001] The invention relates to an active ventilation and cooling self-restoring slope anchoring structure and construction method in cold regions, belongs to the technical field of slope support in cold regions, and is suitable for supporting engineering of roads, railway slopes and natural slopes in permafrost regions . Background technique [0002] With the continuous implementation of the western development, the Qinghai-Tibet Railway, the second-phase project of the Qinghai-Tibet Highway, and oil pipelines have been built one after another, and a large number of new slopes have been generated in cold region engineering construction. The emergence of new slopes during the construction process will inevitably destroy the original surface vegetation and water flow paths, resulting in changes in surface heat transfer conditions. After the construction is completed, the heat absorption area and heat absorption of the soil slope will increase significantly. T...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an active ventilation and cooling self-restoring slope anchoring structure and construction method in cold regions, so as to solve the problem of poor cooling effect of the current support structure, strong frost heaving, great harm to the support structure, weak thawing support ability, and slope failure. The disadvantage of low surface vegetation coverage can further improve the stability of slopes in cold regions

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