Drainage device with spacer screen

FIELD: construction.

SUBSTANCE: invention relates to land reclamation construction and may be used in construction of drainage systems on heavy grounds. The drainage device with the spacer screen comprises a perforated pipe laid onto a drainage cushion, a water impermeable screen made as interrupted in length and a drainage filler from filtering material in areas of screen break. The screen is made as arched from elastic plastic rectangular plates by means of elastic curve and fixation of their edges on walls of the trench at the level of the height of the drainage cushion laid at the bottom of the trench.

EFFECT: increased reliability of device operation during deformations of structurally unstable soils.

2 dwg

 

The invention relates to the reclamation construction and can be used in the construction of drainage systems on heavy soils.

Known drainage device comprising a perforated pipe with waterproof screen and filter material (see asssss No. 1209763, IPC E02B 11/00, 1984).

The disadvantages of the known devices are excessive costs for material of screen and limited vodasoivata capability.

Known technical solutions closest to the claimed is a drainage device comprising a perforated pipe laid on the drain pad, and the screen is made closed around the perimeter of the cross section and intermittent along the length, and drainage backfill of the filter material in places of rupture of the screen (see asssss No. 1442605, IPC E02B 11/00, 1987).

The drawback of the prototype are relatively large cost of the screen that runs from pipes, limited drainage capacity due to the closure of the bottom of the perforated pipe and the need to improve the rigidity of the screen when the deformation of a structurally unstable soil.

The technical result of the invention is to reduce the cost of the device and increase its reliability with deformation of a structurally unstable soil.

The technical result is achieved by the fact that the drainage of the second device, including a perforated pipe laid on the drainage pillow, waterproof screen made discontinuous in length, and drainage backfill of the filter material in places of rupture of the screen, the screen according to the invention is made of an arched resilient plastic rectangular plates by the elastic curvature and fixing their edges on the walls of the trench at the height of the drainage pillows laid on the bottom of the trench.

The novelty of the invention lies in the fact that waterproof arched screen is made of elastic plastic plates by their curvature and fixing their edges on the walls of the trench. These new features make it possible to achieve new properties, namely, that allow the lowest cost material to form an arched screens due to mechanical elastic properties of the screen material and the natural elements of the closed drainage, i.e. the walls of the trench. The above new features and properties are missing in the known technical solutions and allow the proposed technical solution to achieve positive effects, which consists in reducing the cost of the device and increase its reliability with deformation of a structurally unstable soil.

The above allows to conclude that the proposed solution meets the criteria of the invention of "novelty" and "inventive the level".

1 shows a drainage device with spacer-screen, cross section; figure 2 is a longitudinal section.

Drainage device with the spacer screen includes a perforated drainage pipe 1, laid in trench 2 on the drainage cushion 3, a screen 4, made of an arched resilient plastic plate by its curvature and fixation of its edges to the walls of the trench drain backfill of the filter material 5 to the arable layer 6.

The device operates as follows.

Excess water from the arable layer 6 enters the drainage backfilling of the filter material 5, whence it flows through the screen 4 and further into the pipe 1, is laid in the trench 2 on the drainage cushion 3. The inside of the screen water intake capacity of the drainage pipe is increased, because the water from above washes its surface, and the bottom gets it through the drain cushion 3. Water passes freely into the holes of the pipe to provide rapid transport it from the screen and does not create back pressure in the upstream layers. With deformation of the swelling of the soil above the screens last, made of elastic material, elastic perceive them, thereby protecting the drainage line.

Drainage device with the spacer screen, perform the following way. Excavator lifts the trench 2, the bottom of which is placed drainage cushion 3 of the filter material is a, then drain the cushion 3 is placed a perforated drainage pipe 1. Take a rectangular elastic plastic plates that are curved in the form of an arch and down into the trench branches of the arch down, and the edges of these arches at the height of the drainage cushion 3 elastically abuts the wall of the trench 2, which do not allow elastically curved plates screens to appear. After this trench is a tractor with pricipales and falls asleep plots between screens filter material 5 to the arable layer 6. Bulldozer spend backfill of the trench.

Technical and economic efficiency of the proposed device, as compared with the device-prototype (see A.S. USSR №1442605), is that it significantly reduced the price because for the manufacture of screens instead of pipes are relatively cheap plastic elastic plate, which due to the specific mechanical properties and the natural walls of the trench to form an arched screens at the construction site, increases vodasoivata the ability of the pipes, as proposed screens do not close the perforation in the lower part of the tube, and the proposed screens due to its flexibility and elasticity can be reliably perceive deformation swelling of the soil above the screens.

Drainage device with the spacer screen comprising a perforated pipe laid on Dre is most important pillow, waterproof screen made discontinuous in length, and drainage backfill of the filter material in places of rupture of the screen, characterized in that the arched screen is made of elastic plastic rectangular plates by the elastic curvature and fixing their edges on the walls of the trench at the height of the drainage pillows laid on the bottom of the trench.



 

Same patents:

FIELD: construction.

SUBSTANCE: drainage device with a ring screen comprises a perforated pipe with a screen made as closed along the perimeter of the cross section and interrupted along length, and filtering material sprinkled in areas of screen break. The screen is made of identical elastic metal cord recycled car tyres connected to each other at the ends by means of a mechanical link.

EFFECT: improved water drainage capacity of a device due to automatic self-regulation of screen permeability and prevention of pipe lower part closure with screens.

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FIELD: construction.

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6 dwg

FIELD: construction.

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FIELD: agriculture.

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9 ex

Mole-drainage pipe // 2498010

FIELD: agriculture.

SUBSTANCE: mole-drainage pipe is made with the projection inverted inside the pipe and located along its length. The pipe consists of two parts. The parts of the pipe are connected via a flexible element. The flexible element provides the ability of folding the pipe in the vertical plane. On the inner projection of the pipe there are straightening ribs. There is a slit between the ribs along the entire length of the pipe.

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3 dwg

FIELD: agriculture.

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2 cl

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2 dwg

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7 dwg

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6 cl, 2 dwg

FIELD: irrigation building, particularly for laying collector-and-drainage system in the case of high ground water level (which is below plough-layer).

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EFFECT: increased capacity and drain laying quality, as well as following drainage operational efficiency.

4 cl, 4 dwg

Drainage system // 2273692

FIELD: building and irrigation and drainage construction, for agricultural land, underground building parts, roads, and slopes reclamation.

SUBSTANCE: drainage system comprises perforated drainage pipe connected to drain web having extensions, filtering diaphragm and thickened parts in joint areas. The thickened parts are provided with through orifices for bolts receiving. Nuts are screwed on the bolts. Drainage pipe has horizontal slot with bent upwards ends in which drain web in installed.

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2 dwg

FIELD: land reclamation, particularly to lay drain collection system in zones having ground water level above drainage laying level.

SUBSTANCE: method involves loosening fertile ground layer along drain laying axis; digging out channel; forming kerbs of excavated fertile ground; developing trench with chain working tool performing reverse rotation without ground lifting to surface; laying drainage pipe; backfilling the trench and the channel. Pulp consisted of crashed ground and water is extracted from lower trench part during drainage laying and the extracted pulp is supplied into channel or to surface of material used for trench backfilling. Device comprises basic machine, active working tool rotated in reverse direction, drainage pipe tray, box-like hopper with front cutting part, namely knife including post and plowshare. Suction dredge is installed inside the plowshare. Suction dredge has suction line communicated with zone between active working tool and knife through windows formed in front plowshare section. Pressure supply pipeline is communicated with distribution pipelines through intermediate pipeline and bypass gate operated by lever mechanism.

EFFECT: increased productivity and quality of drainage laying in water-saturated ground.

2 cl, 2 dwg

FIELD: mining, particularly to protect building structure built of clay ground against flooding in the case of bedded mineral deposit mining under the structure.

SUBSTANCE: method involves cutting dewatering wells in maximal ground subsidence zones over breakage heading center; drilling horizontal drainage wells from dewatering wells at depth, which is less than distance to neutral line at ground layer bent, but is greater than structure foundation erection depth. Well lengths are determined from mathematical expression with taking into consideration parameters of layer cutting and ground shifting process characteristics.

EFFECT: increased clay ground dewatering and structure protection against flooding.

2 dwg

FIELD: agriculture.

SUBSTANCE: method comprises lying the drain system with the converging drains on the control section, making observation gates within the converging drains, observing the parameters of the operation of the drain system, and comparing the parameters with the permissible values. The drains are provided with mouth and source sections of parallel drains. The lengths of the source and mouth sections of the parallel drains are chosen to be no less than the half of maximum distances between the sources and mouths of the converging drains, respectively.

EFFECT: enhanced precision of control.

1 cl, 1 dwg

FIELD: agriculture.

SUBSTANCE: method comprises making diverging drainage canals in the area to be drained. The mouths of the bed sections are connected with the collector through the underground pipelines. The flow rates are measured and water is sampled in the mouths of the underground pipelines and in the mouths of the canal section beds connected to the collector. The concentrations of contaminants in the samples is measured, and the results are compared with the permissible values.

EFFECT: reduced labor consumptions.

1 dwg

FIELD: mining, particularly to protect objects to be developed and located in shifting basing against flooding with ground and surface water.

SUBSTANCE: method involves forming water-receiving excavations made as drains, pits or wells; draining and removing water; predicting ground surface relied after ground deformation before underground work performing; marking out flat shifting basin bottom and zone characterized by maximal relief depression; forming pit in area of maximal relief depression; arranging water drain at shifting basin boundary; forming ground water removing wells. Pit volume, well depth and well pitch are determined from mathematical relations.

EFFECT: increased efficiency.

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