Ecological bank protection method of riverway roofthrust position

Abstract

The invention relates to an ecological bank protection method of a riverway roofthrust position. The method comprises the steps of constructing a riverway roofthrust ecological revetment at the riverway roofthrust position; arranging a row of pine fences along a bank foot line of the riverway roofthrust position; laying geotextiles at the side against water of the pine fences; arranging ripraps at an included angle between the side toward water of the pine fences and a riverbed; laying crushed stone cushions on a slope; stacking blocks of stone gabions on the crushed stone cushions; fixing the blocks of stone gabions on the bank slope with pine spiles; clamping willow bundles and wide-leaf grass bundles between adjacent blocks of stone gabions near a flood stage of the riverway; clamping emerged plant roots and humid soil in the block of stone gabions near an ordinary water level of the riverway; and clamping submerged plant seeds and the humid soil in the blocks of stone gabions near a low water level of the riverway. The method of the invention has the advantages of building a fine habitat environment for riverbank living creatures, creating a riverbank green barrier, and beautifying riverbank landscape. Plants, stones and microorganisms adhered thereto have a purifying effect on pollutants, intercept source pollutants flowing into the river and improve water quality of the river.

Description

technical field [0001] The invention relates to an ecological revetment method for a river channel top flushing part, and belongs to the technical field of ecological river bank revetment construction. Background technique [0002] In the concave embankment sections with curved river channels and complicated river regimes, the main flow often presses against the bank, and the water flow scours and erodes the bank slope. Affected by circulation scour, especially torrent top scour, bank slope scour is usually severe. Once the shore foot protection facilities cannot resist the scouring force of the water flow, the foot protection will be destroyed, so that the slope of the shore foot will gradually become steeper, until the loss of balance causes the bank to become unstable and damaged. Therefore, it is necessary to stick slope protection in a certain range above the toe of the slope at the top of the river to achieve the purpose of slope consolidation, erosion reduction, and ...

AI Technical Summary

Problems solved by technology

The waterside slope protection has achieved good results in terms of slope consolidation, erosion reduction, seepage prevention, etc., and has played a huge role in the safety of the river, but at the same time, it has also produced adverse effects on the ecology, environment and landscape of the bank slope to varying degrees. : Its hard material and closed structure have destroyed the water-land ecotone of the river channel, resulting in the loss of coastal biological habitats, making it difficult for animals and plants to survive and multiply here, seriously destroying biodiversity, resulting in a significant decline in the self-purification capacity of the river channel water body, and to the face of It is difficult to remove the pollutants entering the river in the form of source, and its smooth and monotonous appearance seriously affects the landscape effect of the river

[0003] In order to overcome the defects of hard revetment and restore the ecological environment of the river bank, people began to use ecological revetment technology, such as slope-type variable seepage area source interception and purification ecological revetment combination system (ZL200610096765.5), landscape multi-level ladder Constructed wetland slope protection forming method (ZL200410065916.1), slope-type ecological revetment with retaining wall (ZL200710036262.3), construction method of frame structure ecological river embankment ZL200810238006.7), ecological polygonal concrete revetment plate with holes and its The application method in bank revetment (ZL 200610148054.8), the ecological concrete bank revetment cylinder and its application method in bank revetment (ZL 200610148053.3), the engineering method of restoring degraded river bank with reeds (ZL 200410010692.4), etc. to protect the river bank slope, These technologies have achieved good results in the synergy of slope landscape, ecology, and pollution cleaning functions, but they are mainly applied to river slopes with low flow velocity. Due to the impact of anti-scouring ability, they cannot be applied to the top of the river. Ecological protection

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