Pre-disintegration soft rock embankment grouting anti-seepage lifting structure and construction method thereof

Abstract

The invention discloses a pre-disintegration soft rock embankment grouting anti-seepage lifting structure and a construction method thereof.The grouting anti-seepage lifting structure comprises a single graded broken stone layer, a soft rock filler layer and a clay layer, the soft rock filler layer is laid above the single graded broken stone layer in a layered mode, and a lifting layer is laid in the soft rock filler layer of a certain layer below a roadbed working area; the lifting layer comprises a plurality of second longitudinal reserved pouring pipe grooves and transverse reserved pouring pipe grooves, the transverse reserved pouring pipe grooves and the second longitudinal reserved pouring pipe grooves are perpendicular to each other and are communicated with each other, and pouring pipes are embedded in the transverse reserved pouring pipe grooves and the second longitudinal reserved pouring pipe grooves. All the pouring pipes in the lifting layer are wrapped in the double-layer geomembrane; the clay layer is laid on the top of the uppermost soft rock filler layer to reach the pavement elevation. The non-uniform settlement deformation of the roadbed is prevented, the overall performance of the soft rock filler embankment is improved, the construction is simple and rapid, and the engineering construction maintenance cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of road prevention and control, and relates to a pre-disintegrating soft rock embankment grouting anti-seepage lifting structure and a construction method thereof. Background technique [0002] According to investigations, a large number of pre-disintegrated soft rocks are distributed in southern my country. Soft rocks are low in mechanical strength, easy to soften when exposed to water, and prone to compression deformation under external loads. They have certain expansibility, disintegration and wettability. Rocks with chemical deformation properties. [0003] In order to reduce the transportation cost of roadbed filling materials and reduce the damage to the surrounding environment of roads, most of the mountainous roads built in my country, especially roads with large fill volumes, use local materials and excavated area soil as the main roadbed filling materials. However, according to investigations, most...

AI Technical Summary

Problems solved by technology

[0006]2. Under the influence of wetting and dynamic load, the soft rock embankment will undergo relatively large settlement, and the resulting settlement mainly occurs in the middle and upper parts, and appears to be in the middle The tendency of contraction, which leads to a variety of disease problems on the road, affects the durability of the road

The settlement of soft rock embankment will lead to wavy and cracked road surface, reduce the durability of the road, and affect the comfort of drivers. The current improvement measures will also increase the maintenance cost and engineering quantity of the road after it is put into use. Applications in engineering are limited

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