SU1381242A1 - Method of producing gravity filter of enclosed horizontal drain - Google Patents

Abstract

This invention relates to the field of drainage construction. The purpose of the invention is to simplify the production technology, reduce the consumption of filter material (FM) and improve the water intake capacity of the drain. During the formation of the gravitational filter, the plow maker pulls off the trench 1, removes the prism 2 granular in the middle part of the bottom 3 of the trench 1 and places the drainage pipe (T) 4 on it. T 4 has water intake holes 5 in its upper part and along the corrugations. T 4 is covered with a cover screen 6, made in the form of a flexible tape, with its middle part resting on T 4 and the edges on the bottom 3 of the trench 1 on the sides of the prism 2. Then trench I is covered with soil 7. Under the action of the soil 7, the screen 6 bends and The T 4 bend, by its ends, mimics the bottom of the trench along the sides of the prism 2. With a further increase in deflection of the screen 6 under the increasing pressure of the soil, filling the edges of the prism 2 moves to T 4. As a result, the FM prism 2 is received into the vertical water receiving channels 8 formed between T 4 and curved down with sections of the covering screen 6 with partial filling of them with FM prism 2. 2 Il. i SL

Description

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The invention relates to the construction of drainage and can be used when constructing closed horizontal drainage on reclaimed land.

I The aim of the invention is to strengthen the production technology, reduce the consumption of filter materials, improve the water intake capacity of the drain.

Figure 1 shows a closed horizontal drain with a gravity filter, cross section; figure 2 - section aa in figure 1.

The formation of a gravitational filter of a closed horizontal drain is carried out as follows.

Drenoukladchik is moved on the track .splanirovannoy sooruzhae14Oy drains, the trench otrgaaet 1 otstaet prism 2 filtrztoschego particulate material from the middle of the trough-shaped bottom 3 of the trench 1, it ukladgoaet drainage pipe 4 with water inlet apertures 5 in its upper part and corrugation troughs and conduit pokrshaet 4 with a flexible screen 6 in the form of a flexible tape with sufficient transverse rigidity, for example, 1 mm thick, made from high density polyethylene or polyvinyl chloride, with its middle part resting on the drainage pipe 4, and edges - at the bottom 3 of the trench of the prism 2 and evenly fall asleep the trench on the sides of the drainage pipeline 4 with the ground 7. By the action of the weight of the soil 7, the screen bends, skirting the drainage pipeline 4, and with its ends copies the bottom of the trench along the sides of the prism 2. The portions of the covering screen bent down 6 abut against the edges of the prism 2 and with a further increase in deflection of the screen 6 under the increasing pressure of the soil backfill move the edges

prism 2 in the direction of the drainage pipeline 4. As a result, prism filtering granular material is thrown into the vertical intake channels 8 formed by the drainage pipeline 4 and portions of the covering screen 6 bent down and partial filling of the prism 2 with granular material. In this position, the covering screen 6 is stabilized by pinching its edges between the bottom of the trench and the backfill and supporting it

curved areas on the granular material inside the vertical water intake channels 8.

Claims (1)

Invention Formula A method of forming a gravitational filter of a closed horizontal drain, including a trench passage, filling the underlying prism of filtering granular material, laying down a drainage pipeline with water intake holes in its upper part, laying a covering screen over the pipeline and returning the trench about ayou and and in order to simplify the production technology, reduce the consumption of filter materials and improve water intake , the formation of a gravitational filter is made by laying a cover screen, filled in the form of a flexible tape with its middle part resting on the drainage pipeline, and edges on the bottom of the trench along the the sides of the prism of the filtering material, after which the trench is backfilled, sequentially feeding the soil from the edges of the covering screen to its middle to form water intake channels between the cover screen and the drainage pipe. (rig.g.