Roadbed longitudinal crack treatment method based on convex tenon type cement grouting geomembrane belt

Abstract

The invention discloses a roadbed longitudinal crack treatment method based on a convex tenon type cement grouting geomembrane belt based, which comprises the following steps of: (1) drilling for coring: drilling a plurality of rows of drill holes on the side slope of a treated roadbed with longitudinal cracks by using a coring machine; (2) geomembrane belt arrangment: putting prefabricated geomembrane belts into the drill holes one by one, wherein the geomembrane belts are round pipe-shaped geomembrane belts made from geomembranes, the diameters of the geomembrane belts are the same as that of the drill holes, and the side walls of each geomembrane belt is provided with a plurality of rows of round through holes; and (3) injecting cement mortar under high pressure: injecting prefabricated cement mortar into the geomembrane belts through a high-pressure grouting machine. The invention has the advantages of reasonable design, simple steps, high construction speed, good treatment effect and low investment cost and can effectively solves the practical problems of larger investment, longer traffic closing time, greater influence on service functions of roads, poor treatment effect, and the like of the traditional roadbed longitudinal crack treatment method for areas with frozen earth for many years.

Description

technical field [0001] The invention belongs to the technical field of subgrade longitudinal crack treatment, and in particular relates to a subgrade longitudinal crack treatment method based on a tenon-type cement grouting geomembrane belt suitable for permafrost regions. Background technique [0002] Due to the harsh natural conditions and complex geological conditions in the permafrost region, the roadbed in this region is prone to a large number of longitudinal cracks. The above-mentioned longitudinal cracks are not only large in scale and numerous in number, but also develop rapidly, are difficult to maintain, and lead to deteriorating road quality. At present, when treating longitudinal cracks on subgrades in permafrost regions, most of the methods are to excavate the top surface of the subgrade first, then use filling materials to fill the gaps, and then spread geogrids on the gaps or cracks. Put in the flexible corbel, and finally backfill according to the original ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a treatment method for subgrade longitudinal cracks based on tenon-tenon cement grouting geomembrane belt, which has reasonable design, simple treatment steps, fast construction speed and The treatment effect is good, the investment cost is low, and it can effectively solve the problems of large capital investment, long time of closed traffic, great impact on road service ability, and poor treatment effect in the existing permafrost area subgrade longitudinal crack treatment methods. question

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