Heat-preservation blind trench facility applicable to multi-year permafrost region and construction method

Abstract

The invention provides a heat-preservation blind trench facility applicable to a multi-year permafrost region and a construction method. The facility comprises a reversed filter layer which is internally paved with a water collection and discharging layer and a crushed stone layer; and the reversed filter layer is provided with a heat-preservation layer, a clay layer and a ground surface plane layer. In a construction process, a ditch with a certain slope is dug on the multi-year permafrost region; the bottom and the side wall of the ditch are paved with reversed filter geotechnical cloth; after a space enclosed by the geotechnical cloth is internally filled with the water collection and discharging layer and the crushed stone layer, the reversed filter geotechnical cloth is paved to form the reversed filter layer with the reversed filter geotechnical cloth paved in the ditch; clay is backfilled on the heat-preservation layer, and grasses are planted after the clay is compacted; and the heat-preservation blind trench facility applicable to the multi-year permafrost region is established. The heat-preservation blind trench facility is provided with the reversed filter layer and the water collection and discharging layer to stop and discharge water; the heat-preservation layer is used for guaranteeing that the water on a frozen layer in the reversed filter layer is not frozen and is smoothly discharged; and heat corrosion effect of the water on the frozen layer is stopped, and the smooth operation and operation period maintenance of engineering construction are guaranteed.

Description

technical field [0001] The invention belongs to the engineering technical field of permafrost regions, and relates to an intercepting and drainage facility suitable for surface water in permafrost regions and water on frozen layers, in particular to a thermal insulation blind ditch facility suitable for permafrost regions, which can be widely used The invention is applied to the interception, dredging and drainage of water on the frozen layer in the engineering field of permafrost regions; the invention also relates to a construction method for building the thermal insulation blind ditch facility. Background technique [0002] The water on the frozen layer refers to the groundwater in the thawed layer above the permafrost layer, commonly known as floating water. It often freezes into ice in cold seasons, and melts into water in warm seasons; when the floating water is completely liquid, it has a free water surface, and the multi-year frozen layer is used as a water-proof bot...

AI Technical Summary

Problems solved by technology

However, these two facilities are mainly used to prevent the thermal erosion of surface water on engineering buildings. They cannot prevent water from the frozen layer in the soil below the surface, and they are easy to freeze in cold seasons to form ice cones, which endanger the safety of engineering buildings.

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