SU1413189A1 - Drainage system - Google Patents

Abstract

The invention relates to land reclamation, in particular, to devices for controlling the moisture content of soils. The aim of the invention is to increase reliability and efficiency. The vertical filter of the drainage pipe 2 is made in the form of a truncated three-step pyramid of local filter material. The heights of the steps 3, 4 and 5 of the filter are interconnected with the depths of the arable layer of loosening the subsurface layer and laying the drain pipe 2,. The presence of shelves 7 and 8 increases the contact area of the filter 1, respectively, with the arable layer and with a loosed subsoil layer with enhanced water permeability. This provides a more reliable hydraulic connection between the dried top layers of the soil and the pipe 2, leading to a significant increase in the total consumption of excess moisture from the arable and subsoil layers in the pipe 2. 1 Cpf-ly, 1 Il. (L

Description

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The invention relates to amelioration, in particular, to devices for {) controlling the moisture of soils, and can be used in the construction of drying and drying systems. ; The purpose of the invention is to increase the reliability and efficiency of the operation (stretching.

The drawing shows the proposed device, the cross-section. ; The drainage system consists of a vertical filter 1, installed on the drainage pipe 2.-Filter 1 rypolnen in the form of a three-stage use-tjeHHoft pyramid. The height of the first step 3 is determined by the depth of arable |: lo. The height of the second stage 4 is determined by the depth of loosening of the subsoil | south layer, and the height of the third stage | 5 is defined as the difference between the depth of the drainage and the second stool.

The width of the shelves of 6.7 and 8 steps of the filter is chosen based on the method of mechanization of the construction of these drainage devices, taking into account the required filtration flow, ensuring an optimal mode of drainage or subsoil moisture

The system works as follows.

Due to the presence of horizontal stripes 7 and 8, the contact area increases (at least by a factor of 2–3) (filter 1, respectively, with the arable layer and the loosened plow layer, which have a higher water permeability, compared to the undiluted, weakly permeable soil layer. This provides more reliable) hydraulics: a 1-gus bond between the dried top to the layers of soil and

Compiled by E.Efimova Editor A.Dolynich Tehred L.Serdyukova Proofreader L.Pilipenko

Order 3744/30

Circulation 637

VNIIPI USSR State Committee

for inventions and discoveries 113035 ;. MoskvaJ Zh-35, Raushsk nab. 4/5

pipe 2, leading to a significant increase in the total consumption of excess moisture coming from the arable and

In this way, the radius and intensity of the effect of the drainage device on the water regime of the topsoil being drained increases. Also thanks

the expansion of the filter 1 in its lower part increases the contact area of the filter 1 with the drainage pipe 2, which reduces the inlet filtration resistance of the pipe 2 and leads also

to increase the intensity of the drainage action.

The vertical filter is made of locust materials, including it can be made of humored soil.

Claims (2)

Invention Formula 1, Drainage system comprising .- a vertical filter placed in the arable and loosened subsurface layers; and installed on a drainage pipe, characterized in that, in order to increase reliability and efficiency of operation, the vertical filter is made in the form of a three-stage truncated pyramid, with the first two stages having a height equal to the depths of the arable and loosened plow stock, respectively, and the third stage - a height equal to the difference between the depth of the drainage and the base of the second stage. 2. The system according to claim 1, characterized in that the vertical filter is made of local materials, for example, from humus-filled soil. Podpna