Reinforced soil composite structure drainage ditch

Abstract

The invention discloses a reinforced soil composite structure drainage ditch. Reinforced soil composite structure bottom layers, reinforced soil composite structure middle layers and reinforced soil composite structure upper layers are arranged on ditch walls on the two sides of a drainage ditch from the bottom up sequentially, wherein capping layers are arranged on the top surfaces of the upper layers; a ditch bottom original soil layer is arranged in the middle of a ditch bottom in a length direction of the drainage ditch; water-permeable bottom angle protection layers are arranged on the two sides of the ditch bottom original soil layer respectively; macadam and coarse sand layers are arranged on the outer sides of the bottom layers, the middle layers and the upper layers and at the bottoms of the bottom layers; clay layers are arranged beside the macadam and coarse sand layers; and the external surfaces of the bottom, the top, and the inner side of each bottom layer are coated with geotextile. The drainage ditch is high in stability, and the permeability of the ditch walls is high, so that the drainage ditch effectively solves the technical problems that the interior of a ditch body of the field drainage ditch is completely isolated from soil outside, water in the middle layer and the lower layer of the field soil cannot be drained, the soil is waterlogged for a long term, the soil aeration and the water permeability become poor, the water in the ditch body in a dry season cannot re-infiltrate into the field soil, and a water resource is wasted.

Description

technical field [0001] The invention relates to a ditch body structure which can discharge excess ground water and soil water in farmland, and can also refill water in the trench into the farmland. It belongs to the field of farmland drainage technology. Background technique [0002] In order to avoid excessive water or soil moisture in the farmland during rainstorms or floods, which affects the field management and the normal growth of crops, field drainage ditches of different grades are set up in the places where the farmland is prone to water accumulation. [0003] At present, the commonly used field drainage ditches are mostly designed with a single-layer homogeneous structure of masonry or concrete, and a water outlet is arranged on the lower side of the field to discharge excess water on the field surface. However, for this type of drainage ditch, the water outlet on the field surface is the only connection between the ditch body and the farmland, and the interior of...

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Problems solved by technology

[0006] In order to overcome the barrier between the interior of the existing field drainage ditches and the external soil, the water in the middle and lower layers of the farmland soil cannot be discharged, resulting in long-term waterlogging of the soil, and the deterioration of soil aeration and water permeability; and in the dry season, the water in the ditch cannot Seep back into the field soil, resulting in the waste of water resources, the invention provides a reinforced soil composite structure drainage ditch

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