SU1388511A1 - Drain - Google Patents

Abstract

The invention relates to the field of land drainage and can be used in the construction of closed drainage on reclaimed land. The aim of the invention is to increase the water intake capacity of the drain and reduce the deformation of its filter membrane under the pressure of the soil. The drain includes a corrugated drainage system with water intake openings 2 in the hollows of 3 corrugations and a filter casing of layers 4 and 5 of fibrous materials. Along the perimeter of the depression 3 of the corrugation of the conduit, a projection 6 is made; the width and height are equal to 1/4 to 1/3 of the depth of the depression 3 of the corrugation. Along the perimeter, in the tops of the 7 corrugations, there is a groove 8, width and depth equal to 1 / 4-1 / 3 width, and water intake holes 9 are formed in it. The inner layer 4 of the filtering shell is made of a tape of a low-growth web with relatively large through pores relative to the outer layer laid along the drainage conduit. The outer layer 5 is made of a ribbon of finely porous cloth, wound on the inner layer 4 along a helical line with the joint BHaXviecT. 1 hp ff, 2 ill. % CO

Description

7 S 5 4

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FIG. 2

The invention relates to the cultivation of land and can be used G1) and the construction of closed drainage on reclaimed land, in the drainage of the territory of settlements, industrial ploshadok and roadway.

The purpose of the invention is to increase the water intake capacity of the drain and reduce the deformation of the filter membrane under the pressure of the soil.

FIG. 1 - closed drain, cross section; in fig. 2 - the same longitudinal section.

The closed drainage includes a drainage conduit 1 made of a corrugated plastic pipe with a water intake opening 2 in the depressions 3 of the corrugations and a two-layer filtering shell made of layers 4 and 5. The drainage conduit 1 is made of corrugated plastic pipes 75-125 mm in diameter or more or with a diameter of 100 and 150 mm. To reduce the deformation of the filter, the shell under pressure of the soil and prevent it from adhering to the depression 3 of the corrugation in the latter is made around the perimeter of the protrusion 6, the height and width equal to 1 / 4-1 / 3 of the depth of the corrugation. To ensure the possibility of transverse filtration of groundwater through the filter, the shell at the top 7 of the corrugation in the latter is formed along the perimeter of the groove 8, with a depth and width equal to 1/4 to 1/3 of its width and inlet holes 9 are formed in it. Water inlets 2 and 9 are placed evenly around the perimeter and length of the catchment conduit 1 and are made in the usual way. The protrusion 6 and the groove 8 have a cross section close to trapezoidal. The inner layer 4 of the filter casing is a tensile strength element, serves as a support for the outer filter layer 5 and is made of a durable low-growth web with relatively large (relative to the outer layer) through pores; providing free removal of soil suffusion particles penetrating through the outer filter layer 5. Layer 4 is made of webbing tape laid along the catchment conduit 1 with an overlap width of 2-3 cm. The material of the inner layer 4 can be polyethylene canvas, fiberglass SE (SSTE- 6) and CC-I or nylon technical fabric of article 1539. Outdoor

The filtering layer 5 is a filtering layer and at the same time serves to fix the inner layer 4 to the pipe 1 during transportation and placing it into the ground. 5 It is made from a ribbon of a finely porous web by winding it along a helical line with an overlapping joint on the inner layer 4. The material of the outer layer 5 can be nonwoven needle-punched and glued sheets.

„Made of synthetic fibers, for example, papal, Suvorov SIZI, Moscow MELIN Ozolnek, Cesis.

The manufacture of all the elements, the assembly of the pipe pipe bundles with the filter casing, their winding on the drums are made in factory

5 conditions The proposed changes in the shape of the corrugation at the catchment conduit are carried out by simply changing the shape of the working surface of the corrugator in the pipe making apparatus.

Drena works as follows.

0 Ground water is drained from the soil and

flows through the outer filter 4

and internal support 5 layers of filtering

shell in the grooves 8 and hollows of the corrugation 3

and through it flows freely to the water intake ports 5, 9 of the conduit 1. In the further, the water moves along the catchment conduit 1 to the drainage collector.

Claims (2)

Invention Formula 0 1- Drain, including a corrugated drainage conduit with water inlets in the hollows of the corrugations and a two-layer filtering sheath of fibrous materials, characterized in that, in order to increase the water intake capacity of the drain 5 and reducing the deformation of the filter, the shell under the pressure of the soil, along the perimeter and depressions in the tops of the corrugations, respectively, the protrusion and groove, in which the water intake holes are located, are made, At the same time, the inner layer of the filtering shell is adjacent to the protrusion and is made of a low-growth web with through pores larger than the pores of the outer layer, which is made of a ribbon of fine-porous cloth, wound on the inner 5 layer in a helix with overlapping joint. 2. A drain according to claim 1, characterized in that the protrusion is made with a width and height equal to 1/4 to 1/3 of the depth of the corrugation cavity, and a groove with a width and depth equal to 1/4 to 1/3 of its width. 1