Revetment is a facility built at the junction of water body and land, which is stabilized by engineering measures to avoid being damaged by various natural and human factors and protect the water body in landscape buildings.
Garden revetment can be divided into integral and natural types according to the cross-section shape. For large-scale water bodies, water bodies with large wind and waves and large water level changes, and garden water bodies with basic rules, the whole straight revetment form is often adopted, and the shore wall is built with stone, brick or concrete.
The slope protection surface is protected by natural materials such as stones, turf, gabions or artificial materials such as geotextiles. The exposed waterfront soil consists of three parts: surface layer, cushion layer and burial. The stability of the surface layer depends on the weight and size of each part, mutual friction, waterfront pressure and mechanical strength of the anchorage structure. In the process of construction, the slope of slope protection is usually controlled between 1: 1~ 1:2 to meet the stability of the surface. The cushion is not less than 20cm thick and consists of gravel, sandstone or geotextile. Geotextiles have the advantages of low cost, small thickness and high plane tensile strength, but the disadvantages are easy damage, uncertain service life and difficult maintenance. The advantages of coarse-grained materials are durability and easy maintenance, but the disadvantages are that gradation and thickness are difficult to control and underwater construction is difficult. The underlying surface is often composed of anti-erosion materials such as large stones and pebbles with a thickness of 50~60cm.
Most urban river revetments in China adopt rigid and channelized design methods, which have unified standards and plasticity and can ensure the flood control ability of rivers to a certain extent.
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