Protection structure of expansive soil cutting slope and construction method

Abstract

The invention provides a protection structure of an expansive soil cutting slope and a construction method. The protection structure comprises a bottom protection structure, a middle protection structure and a top protection structure. The bottom protection structure sequentially comprises first waterproof geotechnical cloth, a foundation drainage cushion layer and a first reinforced layer from bottom to top; a seepage ditch is formed in the foundation drainage cushion layer; the middle protection structure sequentially comprises an internal drainage layer, a second reinforced layer and a slope cultivation soil layer from inside to outside; the internal drainage layer is connected with the foundation drainage cushion layer and can drain water to the foundation drainage cushion layer; the second reinforced layer is arranged on the first reinforced layer; the slope cultivation soil layer is located on a road surface; the top protection structure comprises second waterproof geotechnical cloth and a top protection layer; the second waterproof geotechnical cloth is arranged on the top of the middle protection structure; and the top protection layer is arranged on the second waterproof geotechnical cloth. The construction method is a method for constructing the protection structure. According to the protection structure of the expansive soil cutting slope and the construction method, the expansive soil slope can be effectively treated, and the stability of a slope base structure is maintained.

Description

technical field [0001] The invention relates to the technical field of slope protection engineering, in particular to a protection structure and a construction method for a cut slope with an expansion diagram. Background technique [0002] At present, the traditional treatment method for road expansive soil cutting slopes is generally to slow down the slope or masonry structure protection. The protection principle of the slow down slope is to reduce the sliding load through over-excavation soil. Bricks and stones are used as building materials, and the hard protection is formed by masonry with mortar or small stone concrete to increase its sliding resistance. Since expansive soil is a cohesive soil that expands violently after soaking in water and shrinks significantly after dehydration, the slope constructed by traditional treatment methods is prone to cracking and partial collapse due to the influence of rain for a long time. Phenomenon also can affect highway driving saf...

AI Technical Summary

Problems solved by technology

Since expansive soil is a cohesive soil that expands violently after soaking in water and shrinks significantly after dehydration, the slope constructed by traditional treatment methods is prone to cracking and partial collapse due to the influence of rain for a long time. Phenomenon will also affect road safety

When the traditional treatment method is applied to the slope, it is also necessary to remove the over-excavated expansive soil, which will lead to increased land acquisition for roads and increased project construction costs

Images