Expansive-soil cutting-slope structure and construction method thereof

Abstract

The invention relates to an expansive-soil cutting-slope structure and a construction method thereof. The expansive-soil cutting-slope structure comprises a water-interception blind ditch arranged atthe top of a cutting slope, an inner water draining seepage ditch, an outer water draining seepage ditch, a bottom macadam water draining cushion layer and a lateral pavement structure layer; the inner side of the inner water draining seepage ditch, the inner side of the outer water draining seepage ditch, the ground of the cutting slope and the top of the cutting slope are each paved with a two-cloth-one-film waterproof geotechnical cloth sealing layer; a geogrid, an expansive-soil layer and a slaked lime layer are sequentially and circularly paved on the macadam water draining cushion layerfrom bottom to top; the outer slope surface of the cutting slope is paved with planting soil, and herbaceous plants are planted in the planting soil. According to the expansive-soil cutting-slope structure and the construction method thereof, through the cutting-slope structure, it can be avoided that the cutting slope is scoured, water and soil loss is avoided, the slope surface environment can be beautified, the structural construction cost is low, and the whole stability of the cutting slope can be effectively guaranteed.

Description

technical field [0001] The invention relates to the field of highway engineering, in particular to an expansive soil cutting slope structure and a construction method thereof. Background technique [0002] In my country's highway engineering, the geological situation of expansive soil cutting slopes is often encountered. Expansive soil has the characteristics of water absorption and expansion, dehydration shrinkage, and significant drying shrinkage and wet expansion deformation, which will cause deformation, displacement, and cracking of road cutting slopes. and landslides. [0003] At present, the commonly used treatment methods for expansive soil cutting slopes in my country include mortar rubble slope protection, mortar rubble retaining wall, anti-slide pile, anchor rod method, tree root pile and cement lime soil pile method. Mortar rubble slope protection, mortar rubble retaining wall, anti-slide piles, anchor rod method and tree root pile method improve the integrity of...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a kind of expansive soil cutting slope structure and its construction method to solve the problem of expansive soil cutting slope due to shallow water damage caused by expansive soil shrinkage and wet swelling deformation, resulting in road slope slides. Shallow damage to prevent cutting slope deformation, displacement and landslides caused by expansive soil shrinkage and swelling deformation

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