Flexible expansion reduced ecological slope protection construction

Abstract

Flexible expansion reduced ecological slope protection construction effectively solves the technical problem of expansion soil or expansion rock in road cut slope protection, ensures that the road slope protective structure has the good short-term and long-term protective effect, and is beneficial to reducing the project investment of slope protection. The flexible expansion reduced ecological slope protection construction comprises an ecological slope protection face, a filling or refilling soil layer, foundations, a drainage system and a waterproof system. The filling or refilling soil layer is formed to be a flexible reinforced body by layered filling and layered compacting non-expansion soil or weak-middle-expansion soil and a geogrid paved in the expansion soil in layers. The ecological slope protection face is formed by ecology bags which are paved on the top surface and outside face of the filling or refilling soil layer. Slope covering soil is paved outside the ecological slope protection face. Green plants are planted on the slope covering soil.

Description

technical field [0001] The invention relates to cutting side slope protection, in particular to a flexible swelling-reducing ecological slope protection structure applied to expansive soil (rock). Background technique [0002] Expansive soil (rock) has the characteristics of water absorption expansion and loss of water contraction, affected by atmospheric temperature changes and rainfall, etc., it is very prone to slope collapse and foundation uplift and other diseases. Therefore, it has always been difficult for the geotechnical engineering field to overcome. worldwide technical problems. [0003] Commonly used retaining structures at the foot of cutting slopes mainly include rigid retaining structures such as pile-slab walls, retaining walls between piles, and gravity-type cutting retaining walls; Water skeleton slope protection, anchor frame beam slope protection and support seepage ditch, etc. [0004] Existing retaining structures for expansive soil (rock) cutting slo...

AI Technical Summary

Problems solved by technology

[0004] Existing retaining structures for expansive soil (rock) cutting slope toes, except for strong retaining structures such as pile slab walls and pile retaining walls, which can prevent expansive soil (rock) from occurring due to the instability of cutting slope toes, this type of project It is still difficult to avoid the collapse of the slope above the pile top, and the construction cost is high

Gravity cutting retaining walls are often difficult to take effective measures to prevent rapid changes in water content of expansive soil (rock), and occasionally the retaining wall will tilt, slip or even be pushed down under the action of repeated expansion and contraction deformation

Skeleton, supporting seepage trenches and other measures used for slope protection require slotting on the slope. During the construction process, on the one hand, it is difficult to excavate the slot body in a regular and smooth manner; It is difficult to fill the tank densely with concrete, etc. Therefore, these parts often become the main channels for surface water to infiltrate, resulting in the loss of soil on the slope surface, and it is difficult for the slope surface to be quickly covered by vegetation, so it is easy to cause repeated expansion and contraction deformation of the slope , leading to the collapse of the slope

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