A roadbed antifreeze and interception drainage facility and construction method suitable for seasonally frozen soil regions

Abstract

The invention provides a roadbed antifreezing and drained water interception facility and a construction method suitable for a seasonally frozen-ground region. The facility comprises macadam layers under a base layer, reversed filtering layers of the macadam layers, reversed filtering layers of drained water interception facilities, drained water interception layers, macadam filtering layers, insulating layers, plain soil layers and aboveground vegetation layers. The reversed filtering layers, the drained water interception layers, the macadam filtering layers, the insulating layers, the plain soil layers and the aboveground vegetation layers of the drained water interception facilities are arranged on the two sides of a road. During construction, grooves with certain run-off elevation are formed in the two sides of the road. The reversed filtering layers are laid at the bottoms and the side walls of the grooves. The drained water interception layers and the macadam layers are paved in the reversed filtering layers. The macadam layers are laid on the two sides of the roads. The three parts of macadam layers are connected. Water is gathered to the drained water interception layers. The insulating layers are laid on the side faces and top faces of the macadam layers on the two sides of the road. The upper portions of the insulating layers are backfilled with plain soil. Turf is planted on the surface layer. According to the roadbed antifreezing and drained water interception facility, drained water is gathered through the macadam layers and the drained water interception layers, the effect that the water in the drained water interception layers does not freeze and is drained out of the field is ensured by the insulating layers, and the effect that freeze-thaw damage does not occur to the roadbed during operation is ensured.

Description

technical field [0001] The invention belongs to the technical field of highway or airport subgrade engineering in seasonal frozen soil regions, and relates to a roadbed antifreeze drainage facility and construction method suitable for seasonal frozen soil regions. Background technique [0002] Seasonally frozen soil is the layer of soil that freezes in winter and thaws in spring. In my country, the area of ​​seasonal frozen soil area is about 5.137 million square kilometers, accounting for 53.5% of the national land area. With the development of our country's economy, human economic activities in seasonally frozen soil areas are becoming more and more intensive, engineering construction is constantly being carried out, and there are more and more corresponding highway and airport projects. As the foundation of structures, frozen soil has high strength and low compressibility or no compressibility in frozen state. After the permafrost thaws, the bearing capacity decreases a...

AI Technical Summary

Problems solved by technology

Even according to this method, freeze-thaw damage still occurs on the road shoulder, and because the road surface is wider, the amount of work to replace the cushion layer is relatively large, and the cost is relatively high

Images