A construction method for composite ecological slope protection

Abstract

The invention discloses a construction method for composite ecological slope protection, which comprises the following steps: the first step is to prefabricate the first and second prefabricated blocks; the second step is to lay the first permeable unit at the bottom of the channel channel, Lay the first and second prefabricated blocks alternately on the top, and fill the first and second water-soil exchange holes with gravel; lay the second permeable unit on each back of the U-shaped channel, and backfill and compact it layer by layer; the third The first step is to stack the soil-fixing unit at the bottom layer, and construct each layer of soil-fixing unit in a staggered order from bottom to top until the top elevation of the ecological slope protection is higher than the flood control level and lower than the canal bank. The first and second permeable units and the U-shaped channel of the present invention form the first-level protective slope protection, and the stepped ecological slope protection forms the second-level protection, which has a good soil-fixing effect and improves the stability of the slope. At the same time, the ecological slope protection is a stepped structure, which cooperates with the U-shaped river canal, which can not only reduce the area occupied by the two sides of the river canal, but also slow down the slope of the slope protection and improve the anti-scouring capacity of the slope protection.

Description

technical field [0001] The invention relates to ecological slope protection, in particular to a construction method for composite ecological slope protection. Background technique [0002] In the process of modern urbanization, the population has increased dramatically, especially in densely populated areas, and the boundary space of canals (or ditches) has been continuously occupied. or ditch) gradually narrowed, resulting in the disappearance of the floodplain of the ditch. At the same time, as the river becomes steeper, the water quickly flows to the main river, which reduces the flood storage and detention function of the river. For this reason, ecological slope protection is designed on both sides of the canal to achieve the purpose of flood control and soil erosion, while taking into account the environmental greening and landscape. [0003] Existing canal ecological slope protection is usually constructed by on-site masonry. After the masonry is completed, turf is p...

AI Technical Summary

Problems solved by technology

[0004] First of all, the construction process is often accompanied by a large amount of earthwork excavation, which requires a large space to meet the construction needs. Not only is it difficult to meet the construction needs of small-space rivers and canals, but also the spoils are transported outside, which increases the construction cost; Masonry, the workload of masonry is heavy, the construction period is long and the construction efficiency is low;

[0005] Secondly, the existing ecological slope protection cannot perform water and soil exchange with the water body in the canal, that is, the water and soil exchange is insufficient, and it is difficult to meet the growth needs of plants, resulting in poor landscape effects and poor soil fixation effects. Especially in the early stage of slope protection, the soil erosion is more serious due to the erosion of rainwater;

[0006] In order to achieve the greening effect, holes are often opened on the hard blocks during construction. Due to the lack of soil stabilization measures in the holes, water and soil erosion of the soil after the wall is formed, posing a safety hazard;

[0007] Furthermore, water conservancy ecological slope protection often needs to slow down the slope. During construction, the river channel section (or ditch) with insufficient space is often made into a vertical hard retaining wall or pile foundation for permanent support, resulting in the hardening of the river (ditch) Linearization, loss of ecology and landscape

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