Flexible biological roadbed slope drainage ditch and construction method thereof

Abstract

The invention discloses a flexible biological roadbed slope drainage ditch and a construction method thereof. The flexible biological roadbed slope drainage ditch comprises a drainage ditch body (1),wherein a composite geo-membrane layer (2) and a geotechnical pattern room layer (3) are sequentially laid from outside to inside on the drainage ditch body (1); the geotechnical pattern room layer (3) is internally filled with a rubble layer (5) and a planting soil layer (4) from inside to outside in sequence. The construction method mainly comprises the following steps: digging the drainage ditch body (1), carrying out laying and lap joint of the composite geo-membrane layer (2), laying the geotechnical pattern room layer (3), and filling the geotechnical pattern room layer (3) with packing.A roadbed constructed with the method has the advantages that partial deformation of a slope can be endured, cracking and damage of structures are not easily caused, materials can be conveniently transported, relatively small construction difficulties can be caused, the manufacturing cost is relatively low, the environment is slightly damaged, the attractiveness is not affected, meanwhile, the environment can be beautified, a great deal of garbage is not resulted when the materials are recycled, the construction method is applicable to cold regions, and the roadbed is relatively long in service life.

Description

technical field [0001] The invention belongs to the technical field of roadbed slope drainage ditch, in particular to a flexible ecological roadbed slope drainage ditch and a construction method thereof. Background technique [0002] Roadbed slope protection is one of the important measures to ensure the stability of the roadbed. Only by ensuring the stability of the roadbed slope can road driving safety be ensured. There are many common accidents of subgrade damage caused by subgrade slope instability, such as side slope landslide, slippage, spalling, etc. Most of these accidents are caused by the increase of precipitation. When the water content in the slope soil increases, the self-weight of the soil will increase, so the sliding force of the soil will also increase. At the same time, because the precipitation can directly replenish the groundwater, the pore water pressure in the slope soil will increase, effectively The stress drops, thereby greatly reducing the stabili...

AI Technical Summary

Problems solved by technology

First of all, the drainage ditch with grouted rubble and concrete structure is a hard structure, it is difficult to withstand the local deformation of the slope, and it is easy to cause cracks or even damage to the structure. The water in the drainage ditch will seep into the slope soil through the cracks, causing the slope to lose Second, it is difficult to transport masonry rubble and concrete, especially for high slope projects, the construction is more difficult, the total cost in the life cycle is larger, and the cost is higher; The "heat island phenomenon" in the city has a great destructive effect on the environment, and at the same time affects the appearance of the roadbed slope. In terms of material recovery after the structure is decommissioned, it will cause a lot of garbage; Concrete is easy to shrink and crack under low temperature environment, which will affect the function and service life of the structure. Therefore, the development and design of a drainage ditch with a longer service life is an urgent problem in this field.

[0004] To sum up: the existing subgrade drainage structure has the disadvantages that it is difficult to withstand the local deformation of the slope, it is easy to cause structural cracking or even damage, the construction is difficult, and the service life is short

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