Firm structure for preventing and controlling freeze-thaw collapse of side slope in cold region and construction method for firm structure

Abstract

The invention discloses a firm structure for preventing and controlling freeze-thaw collapse of a side slope in a cold region and a construction method for the firm structure. An arch framework is paved on the surface of the side slope; a slope toe wall is arranged at the bottom of the side slope; a plurality of drain pipes are arranged in each arch ring of the arch framework in a rectangular array or quincunx array mode; a plurality of drain holes are formed in each drain pipe; the outer wall of each drain pipe and the end of each drain pipe, which stretches into a soil body of the side slope, are coated with dense gauze; and a heat preservation structure is arranged on the bottom surface and the side wall of the slope toe wall and the surface of the side slope at certain depth. Groundwater can be effectively drained, groundwater level, the water content of the side slope and water migration rate are reduced, the stability of the side slope is ensured, and engineering cost is greatly reduced; through the heat preservation structure, the freezing depth and frost heaving thaw collapse amount of the side slope can be effectively reduced, and the engineering cost can be effectively reduced; and through the arch framework, the infiltration of surface water, and the scouring of the surface of the side slope due to melted snow, rain and the like are reduced, so that the width, depth and length of a lower layer crack are reduced, and the surface of the side slope is protected.

Description

technical field [0001] The invention relates to slope or slope stabilization technology, in particular to a stable structure and construction method for various road slopes, house foundation slopes and natural slopes in cold regions. Background technique [0002] At present, the engineering technology used to prevent the freeze-thaw slump of slopes in cold regions is to replace the original frost-heave soil with non-frost-heaving coarse aggregate with a large permeability coefficient, and the other is to use non-cold The slope treatment method in the area is to use anti-slide piles or retaining walls and other supporting structures for supporting and retaining. [0003] The use of non-frost heaving coarse aggregate will increase the project cost by dozens of times, not only the construction period is long, but also there are potential safety hazards. The cost of using the retaining structure is also very high, and what is more serious is that it cannot fundamentally solve t...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problem that the freezing-thawing slopes in cold regions cannot be cured, and provides a stable structure and construction method for preventing freezing-thawing slopes in cold regions, which can improve the stability of freezing-thawing slopes in cold regions. high safety and low engineering cost

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