A kind of permafrost filling construction method

Abstract

The invention discloses a construction method for permafrost soil filling. The specific construction process includes construction preparation, measurement and lofting, site cleaning, leveling and compaction, embankment filling, layered filling of water-permeable materials, rolling compaction, non-total freezing For subgrade construction and fully frozen subgrade construction, self-inspection shall be carried out in time after each process is completed, and inspection shall be submitted after passing the inspection. The method of the invention aims at the cause of the frost heave of the roadbed in the permafrost area, combined with the existing construction experience in the permafrost area, and reduces the groundwater level and the original content in the roadbed filler by cutting off the infiltration of surface water and the way of rising capillary water. The water content can be kept near the optimal water content, thereby cutting off the water supply source during the ice accumulation process, thereby effectively preventing the frost heave of the roadbed caused by unreasonable filling materials and processes during construction, and ensuring the road quality after opening to traffic.

Description

technical field [0001] The invention relates to the field of roadbed construction, in particular to a permafrost filling construction method. Background technique [0002] Frost heaving of subgrade in permafrost regions will cause frost heaving and muddying in some sections of roads or railways shortly after construction. The increase in water volume will lead to subgrade frost heave under the harsh environment, which will cause great harm to road and railway transportation. Contents of the invention [0003] The object of the present invention is to provide a permafrost filling construction method to solve the problems raised in the above-mentioned background technology. [0004] To achieve the above object, the present invention provides the following technical solutions: [0005] A permafrost filling construction method, the specific construction process is: [0006] (1) Construction preparations: before subgrade construction starts, on-site investigation and verific...

AI Technical Summary

Problems solved by technology

[0002] Frost heaving of subgrade in permafrost regions will cause frost heaving and muddying in some sections of roads or railways shortly after construction. The increase in water volume will lead to subgrade frost heave under harsh environment, which will cause great harm to road and railway transportation.