Overwintering protection coiled material for seasonal frozen soil engineering and construction method

Abstract

The invention discloses an overwintering protection coiled material for seasonal frozen soil engineering and a construction method, the efficient overwintering protection coiled material is formed through cooperative operation of a heat preservation coiled material and a moisture absorption coiled material; and from the mechanism of seasonal frozen soil generation, excessive moisture in a near surface soil layer is absorbed through the moisture absorption coiled material; water freezing and downward development in the near-surface soil layer are avoided;, meanwhile, trace heat release is stable in the near-surface water absorption process, the temperature of air in the coiled material covering layer can be increased, and formation and development of frozen soil are further avoided; the moisture absorption coiled material is covered with the heat preservation coiled material for heat preservation, the temperature near the earth surface is effectively kept, and frost heaving damage is prevented. On the basis of traditional single heat preservation, the function of absorbing moisture in soil in a near-surface area of a project is added, frost heaving disasters are fundamentally prevented, and better heat preservation and anti-freezing effects are scientifically and effectively achieved; the near-surface soil layer fully dried by the moisture absorption coiled material becomes a part of the whole heat preservation system, and formation of seasonal frozen soil is further prevented.

Description

technical field [0001] The invention relates to the technical field of foundation pit engineering, in particular to a winter protection coiled material for seasonal frozen soil engineering and a construction method. Background technique [0002] The water in the soil layer in the continental monsoon region of the north temperate zone in China forms ice crystals under the negative temperature conditions in winter, which makes the volume of the soil expand and form seasonal frozen soil, which has great impact on the construction of road embankments, roadbeds, foundations of buildings or structures, etc. Negative Effects. [0003] For road and foundation engineering projects in seasonal frozen soil areas, the soil layer reserved on the exposed surface of the project is generally covered with thermal insulation materials to prevent embankment, roadbed or foundation from being damaged by freezing. Conventional overwintering insulation materials are benzene board or bagged perlit...

AI Technical Summary

Problems solved by technology

Conventional overwintering insulation materials are benzene board or bagged perlite. The former benzene board is measured in blocks. For the convenience of transportation and construction, it usually has a small area, many joints and is difficult to handle. It cannot guarantee the integrity of the insulation area. The brittle benzene board The board is also easily damaged during laying or dismantling; the latter bagged perlite has an insulation effect through landfill, and the insulation efficiency in winter is low and the engineering insulation effect is average

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