A construction method for anti-salt and frost protection structure of highway slopes in coastal areas

By combining biological salt-tolerant plants and salt-resistant and anti-seepage geotechnical materials on the slopes of coastal highways, a multi-layer protective structure is formed, which solves the problem of slope damage caused by salt erosion and freeze-thaw cycles, and achieves improved slope stability and ecological environment protection.

CN118933030BActive Publication Date: 2025-09-16CHINA CONSTR EIGHT ENG DIV CORP LTD +1
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Patent Information

Application Number
CN202411069882.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-06
Publication Date
2025-09-16
Estimated Expiration
2044-08-06

AI Technical Summary

Technical Problem

The highway slopes in coastal areas suffer from material degradation and structural failure due to the dual effects of salt erosion and freeze-thaw cycles. Traditional protective measures have limited effectiveness, high costs, and great environmental impact.

Method used

A comprehensive protection system is formed by combining biological salt-tolerant plants with salt-resistant and anti-seepage geotechnical material barriers, including a salt-resistant and anti-seepage geotechnical material barrier layer, a soil-solidifying and salt-removing nutrient layer, a wire mesh and a salt-tolerant plant layer.

Benefits of technology

Effectively prevent salt infiltration, slow down freeze-thaw cycle damage, improve slope stability, extend the service life of highways, reduce construction and maintenance costs, and protect the ecological environment.

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Abstract

The present invention discloses a construction method for a salt-freeze-resistant protective structure for the side slopes of highways in coastal areas, comprising an original slope surface, a slope crest provided on the top of the original slope surface, a highway provided at the bottom of the original slope surface, a salt-resistant and anti-permeability geotechnical material barrier layer provided above the original slope surface, a soil-fixing and salt-removing nutrient layer provided above the salt-resistant and anti-permeability geotechnical material barrier layer, a wire mesh provided above the soil-fixing and salt-removing nutrient layer, a surface planting soil provided above the wire mesh, and mixed salt-tolerant plants cultivated above the surface planting soil. The protective structure of the present invention combines biological salt-tolerant plants with a geotechnical material barrier containing salt-resistant components, and forms a comprehensive protective system through the plant soil-fixing and salt-resistant capabilities of the biological barrier and the protective performance of the geotechnical material. This system can not only effectively slow down the dual damage of salt erosion and freeze-thaw to the slopes, but also improve the stability of the slopes, extend the service life of the highway, and protect the ecological environment along the route.
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