Horizontal underground water intake of combined design

IPC classes for russian patent Horizontal underground water intake of combined design (RU 2518452):

E02B11/00 - Drainage of soil, e.g. for agricultural purposes

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FIELD: construction.

SUBSTANCE: invention relates to hydraulic engineering, namely, to water intake facilities. A horizontal underground water intake comprises a water receiving tray 1 with a metal grid 2, on top of which there are gabion mats 3 laid in longitudinal rows with drainage devices. The metal grid 2 is arranged on top of the tray 1. Drainage devices of gabion mats 3 are made of light fascines 4 and perforated pipes 5 laid in layers and wrapped into a gabion net. On top of gabion mats 3 along the tray there are flexible mats 6. Mats 6 are made of dense rows of light fascines wrapped into a geonet. At two sides perpendicularly to the tray 1 and with an inclination to it, at a certain distance from each other, there are dense rows of additional water-collecting lines 7 of the tray 1 from gabion mats 3. Additional lines 7 of gabion mats 3 enter the water-receiving tray 1 with the help of short channels 8. Channels 8 are arranged on top of the tray 1 boards and with direction of the drain inside the tray 1. At the end of the water-receiving tray 1 there is a water-collecting well 9 equipped with a water-intake pipeline 10. Around the well 9 and on top of the loose soil along the line of the tray 1 there is a safety screen 11 from clayey soil.

EFFECT: invention provides for water intake from underground sources in case of shallow ground waters.

5 dwg

The invention relates to hydraulic construction, more precisely to the water intake structures, and can be used for withdrawal of water from underground sources in shallow deposits of groundwater.

Relative to the closest technical solution is underground horizontal tubular intake [1, 2], containing the water intake pipe with drainage holes (round or slotted) and envelop filter in two-three layers of sand and gravelistoe material and the drainage well. The main disadvantage of this technical solution are: low efektivnosti work, the complexity of manufacturing the filter package and the need of a large number of stone material.

The purpose of the invention is improving the efficiency and reducing the complexity of construction.

This goal is achieved by the fact that underground horizontal water containing a water-intake pipe with filter cover and the drainage well at the bottom instead of the water intake pipe has an open tray, covered by a metal grate, above which the longitudinal rows are arranged gabion mattresses with drainage device, consisting of lung fashin and perforated pipes laid in alternating rows and wrapped in gabion mesh, on top of gabion mattresses along the tray stacked flexible mattresses, SOS is easie from draining aggregate, which is made of a dense series of light fashin wrapped in the geogrid, and two sides perpendicular to the tray and with a slope to it at a certain distance from each other stacked layers similar gabion mattresses, forming additional drainage line water tray, with additional lines gabion mattresses are collecting tray with short channels, arranged on top of the sides of the tray and with the flow direction in the inside of the tray.

1 shows a longitudinal section along the axis of intake tray horizontal underground water; figure 2 - plan of the main part of the intake; figure 3 is a cross section of catchment tray along the line of the longitudinal axes of additional lines gabion mattresses; 4 - gabion mattress; figure 5 is a flexible mattress from the lungs fashin.

Horizontal underground water consists of water-receiving tray 1 with metal bars 2 arranged on top of the tray, gabion mattresses 3 with drainage device, made of light fashin 4 and perforated pipes 5, stacked in layers and wrapped in gabion mesh. Top gabion mattresses 3 longitudinal rows of stacked flexible mattresses 6, made of light fashin 4 wrapped in the geogrid. With two sides perpendicular to the tray 1 at a certain distance from each other there is an additional water the teams line 7 of gabion mattresses 3, and the contact point between the end parts of each line 7 of gabion mattresses 3 on top of the tray is provided by short channels 8, incoming slant to the inside of the tray 1. In the end collecting tray 1 is arranged by drainage wells 9, equipped with the intake (suction) piping 10. Around the well 9 and on top of the bulk soil along the line of the tray 1 is arranged a protective shield 11 clay.

Underground horizontal intake is constructed as follows.

First, prepare a sufficient volume of dry and Mature cane and brought it to the place of construction of water intake. Then reed made the necessary amount of light fashin 4 of them, wrapping them in the geogrid 4-5 pieces, made of flexible mattresses 6. Also from the lungs fashin 4, stacking layers with perforated pipe 5, is made and gabion mattresses 3. Later in the aquifer ground, with a small depth of the watertable, develop the basic trench for receiving the tray 1 and the auxiliary trench under additional drainage line 7 of gabion mattress 3 and the pit for drainage well 9. After planning the base of the tray 1 and the auxiliary trenches for line 7 and the bottom of the pit for drainage pit 9, the pitch of the main trench under the tray 1 in the direction of the well 9, providing effektivnye and drainage prefiltermessage water, is 0,015...0,025. And the slopes of trenches additional drainage lines 7 in the direction of the tray 1 are 0,025 0,05.... Then at the same time build a drainage pit 9 and the tray 1 is made of concrete, reinforced concrete or other safe material. Collecting tray can be made of concrete, metal or polymer material with a segment or parabolic cross-section. After dialing the required strength of the materials of the well 9 and the tray 1, the top of the tray 1 arrange the reinforcing grid 2 (A1 ø 14-16 mm) with cells of 10×10 cm or 10×20 cm, Then a trench around the tray 1 to the top fall asleep with local soil, and the top of the tray 1 is perpendicular to it, in places of input lines 7 arrange short channels 8 entering the inside of the tray 1. Then simultaneously placed longitudinal rows gabion mattresses 3 above the tray 1 and the additional trench drainage lines 7, so that the perforated pipe 5 (adjacent mattresses 2) respectively were included in one another by lines of slope and water flow. Thus, gabion mattresses 3 are mounted along the length of the tray 1 and the trenches 7. Top gabion mattresses 3 along the tray 1 stack also longitudinal rows of flexible mattresses 6, with dense rows in two layers with ligation and attach them to the gabion mattresses 3. Gabion mattresses 3 may have the following dimensions: 30×20×120 cm 35×25×150 cm, 40×30×200 cm and others. And the flexible mattresses 5 make the length of 150-200 cm and a diameter of 20-25 cm Then on top of flexible mattresses 6 and gabion mattresses 3 (additional drainage lines) stack corresponding to (removed from the aquifer) ground to top of trenches with a uniform seal to its natural state. In the catchment of the well 9 and on top of the bulk soil along the line of the tray 1 is placed a protective shield 11 of the clay soil (crushed clay, of a thickness not less than 25 cm, to prevent the ingress of dirty water runoff to the receiving part of the structure. In the end in the drainage pit 9 mount the suction pipe so that the inlet pipe is positioned above the bottom 30 see After construction the area around the diversion structure plan and equip so that runoff water does not penetrate nor in trench 1, nor in the well 7.

Horizontal underground water combined structure operates as follows.

In the unconfined aquifer of the soil, due to the fact that the groundwater level is above and flexible gabion mattresses, water flows by gravity to a flexible mattress 6 and gabion mattresses 3, with good drainage properties. In gabion mattresses 3, where the water penetrates through the water intake holes in perforated drainage pipes 5, which (because of the slope) transportation and ingress of water into waters of the receiving tray 1 and through him into the drainage pit 9. Light Pasini 4, made from dried reeds are good draining material, which retains its properties (without decomposition) 15-20 years. After 12-15 years of age may be replaced by draining materials, i.e. replaced and shifted gabion 3 and flexible mattresses 6. Best collecting tray 1 with the segment or parabolic cross-section. To ensure efficient operation of the facilities of drainage wells it is necessary to provide continuous sampling of water through the suction pipe 10 stationary pumping station or the downhole pump.

Horizontal intake combined design can most effectively be used in coastal and other aquifer groundwater arrays with the depth of the unconfined groundwater level 7-10 PM

Underground horizontal water intended for water supply of rural settlements, small towns and villages.

Sources of information

1. Ammori. The water supply. The diversion structure. - Kiev: high school. The head of the publishing house. 1984. Pp.163-165.

2. Abramov I. The water supply. - M.: 1982 - s-194.

Horizontal underground water combined structure containing the water intake pipe and drainage wells, characterized in that on the bottom instead of the water intake pipe has an open tray, covered by m is a metallic grating, topped with longitudinal rows of stacked gabion mattresses with drainage device, consisting of lung fashin and perforated pipes laid in alternating rows and wrapped in gabion mesh, on top of gabion mattresses along the tray stacked flexible mattresses, consisting of drainage aggregate, which is made of a dense series of light fashin wrapped in the geogrid, and two sides perpendicular to the tray and with a slope to it at a certain distance from each other stacked layers similar gabion mattresses, forming additional drainage line water tray, with additional lines gabion mattresses are collecting tray with short channels arranged on the top sides of the tray and with the flow direction in the inside of the tray.