SU1715985A1 - Method for soil draining - Google Patents

Abstract

The invention relates to the field of construction, in particular to lowering the level of groundwater while protecting against the flooding of built-up areas of cities and industrial sites, and is aimed at reducing the labor-intensive and energy-intensive works. This is achieved by the fact that during the drilling of pairs of well bore wells, their end sections are located at different levels and the sections are equipped with water receivers. During the discharge of water, each downstream opposite well is evacuated. The location of the end portions is maintained within their effective range. After the oncoming wells are drilled, additional drainage wells may be drilled over them. 1 hp ff, 2 ill. w Ё

Description

The invention relates to the field of construction, in particular, to lowering the level of groundwater while protecting against flooding of built-up areas of cities and industrial sites.

There is a method of drainage of soil by drainage, including the construction of mine wells and their combination with the help of connecting conduits.

An advantage of the known method is the possibility of installing pumping equipment not in every catchment well due to their combination and reduction due to this operating cost.

The disadvantage of this method is the narrow scope due to the limited length of the aiming pushing of the pipeline from one shaft well to another.

The closest to the proposed method to the technical essence and the achieved result is a method of drainage of soil by drainage. This method includes the device of mine wells, the passage of horizontal wells from each other and their connection, ensuring the flow of water from one well to another.

The disadvantage of this method is the high complexity and cost of the work, due to the use of special sophisticated equipment and the complexity of the technology.

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Furthermore, the method is applicable only in cases where the surface of the soil between wells is accessed.

The aim of the invention is to reduce the labor-intensive and energy-intensive work.

According to the invention, the goal is achieved due to the fact that in the method of drainage of soil by drainage, including the formation of shaft wells, drilling from their lower parts of counter horizontal wells, bypassing groundwater between wells and discharging them, during the drilling of counter wells, their end sections tkrv at different levels and equipment of the latter in water receivers, and during the drainage of water, the downstream opposite well is evacuated, and the location of the end sections leads to the limit x their effective radius deist-

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In order to increase the efficiency of the method, additional drainage wells are drilled over them after the oncoming wells are drilled.

FIG. 1 is a plan of a system of mine wells with radiation wells; in fig. 2 is a section AA in FIG. 1.

The proposed method of drying the soil is carried out as follows.

On the site to be protected from flooding by groundwater, mine wells 1, 2.3 are arranged, of which ray drainage wells 4 are located, which are located in the dried earth massif 5 below the groundwater level 6 above the aquitard 7. Horizontal ray wells pass, for example, using the ULB-130 beam boring unit, designed by the Belgorod Institute VIO-GEM. In one of the drainage wells 2, a pump 8 is installed for pumping groundwater. The groundwater level 9 in the well changes when the water is pumped out.

To connect the catchment wells 2 and 3 of them, two opposing wells 10 and 11 at different heights are passing towards each other. The end sections of oncoming wells 10 and 11 are equipped with water intakes 12 and 13. The end sections of wells 10 and 11 and, respectively, the water intakes 12 and 13 are located within their effective range.

In this case, the filtration flow of water from the water intake 12 of the horizontal well 11 into the water intake 13 of the underlying well 10 and further along the well 10 into the shaft well 2 is provided.

Compartment 14 is sealed and connected to a vacuum pump 15.

The drainage of soil by drainage according to the proposed method is carried out as follows.

The groundwater from the drained massif 5 enters the radial drainage wells 4 and through them into the drainage mine wells 1, 2, 3. From the drainage mine well 2 ground water is pumped out by pump 8 to the discharge point, providing the specified dynamic level 9. In other drainage silos The wells 1 and 3 accumulate groundwater and enter the horizontal wells-conduits 11 and the water intakes 12, which are located in the zone of effective radius of action of the water intake 13 of the horizontal well 10.

The latter is located below the radiation drains 4 and due to the maintenance of a low dynamic level 16 in compartment 14 by pumping water into the mine 2 forms depressive funnels in the area of the water intakes 13. The ground water flows through the water inlet 12 of the horizontal wells 11 from mines 1 and 3 into these funnels. .

If necessary, additional drainage wells 4 are run over the horizontal conduit wells 10 and 11.

Example. Mines 1, 2, and 3 are made by the bottomhole method, reinforced concrete, with a diameter of 4.55 m and a depth of 10.0 m. With the aid of the ULBNZO installation, 4 drainage wells with a length of m from each shaft well are arranged.

From wells 1 and 3, on the one hand, and well 2, from the second side, horizontal wells with a diameter of 130 mm were drilled towards each other using the ULB-130 installation before crossing their effective ranges (1.2-2.6 m). The end sections of counter horizontal wells are equipped with tubular filters with wire winding TP-59.28 of the Drohobych Experimental Mechanical Plant and PVC-fluted corrugated filter tubes TOF-100 or other similar filters.

A shaft well is equipped with two submersible pumps of the ECV type and a forwarder-smart pump 15.

By eliminating an intermediate shaft well for connecting horizontal wells (the base case), the cost and complexity of the work will be reduced by 20-25%. Electricity consumption in comparison with the option of autonomous pumping of groundwater from each shaft well will be reduced by 15-20%.

Thus, by eliminating the construction of additional mine, a well, or the use of complex equipment to connect horizontal wells and water lines between the mine wells, when they are combined into a system, the cost and laboriousness of the work are reduced.

Distinctive features of the claimed object are: penetration of the radial water wells of the connecting conduit at different elevations, the formation of water-receivers at the end sections of the radial water wells, evacuation of the underlying horizontal well during water drainage and the location of the end sections of the wells within their effective range.

Claims (1)

1. The method of drainage of soil by drainage, including the formation of mine five wells, drilling from the lower parts of the last pairs of oncoming horizontal wells, bypassing the groundwater between the pairs of wells and withdrawing them, characterized in that, in order to reduce the labor intensity and energy intensity of the works, during the drilling of the counter wells, their end sections are located on different levels and equipping the latter with water intakes, and during the removal of water they evacuate each of the downstream opposing boreholes, and the location of the end sections is carried out within their effective radius Procedure. 2 The method according to claim 1, about tl and h and y and the fact that after drilling the oncoming wells, an additional 20 drainage wells are drilled over them. .y: "vi S..r .... .   v  - i.   N., “y. V, "- ..... ". / G. .. . -V -v-.t / g .., ..; . 2 .. L. . / .. l "". . ft vV “..,: ....- .x. ; --X –Y5. iimuu uuzT .... .g    ftT ./, -; bauufflQiv ffifYVM /. . . / , 13. / -/., . and -y -rf. .. -one .. / h f / vr r. -v /; . : - 7Л ч.v. v 1.;.; - 2IiiL.-1 -.VjJ Aa   l . j. . #  i,. . .   t ". Fig