SU1317065A1 - Method of constructing water intake well - Google Patents

Abstract

The invention relates to construction and mining, and can be used in the protection of mine workings from groundwater, construction dewatering, water supply. The invention is aimed at improving the efficiency of groundwater extraction system of absorbing and water wells. This is achieved by forming a water intake cavity in a water well and filling it through a absorbing well with a granular filtering material with a density equal to the density of water. Molding caverns are conducted in zones from top to bottom, while in the subsequent zones they feed the granular material with a successively increased density. As a granular material, semi-expanded polystyrene granules are used. Water is pumped out of a water well with a flow of water from the overlying strata through absorbing wells. The formation of a cavern with filling with a granular filter material provides long-term serviceability of a water intake well, while the system of absorbing wells allows centralizing the pumping of groundwater from a single stratum, which increases the efficiency of groundwater withdrawal. 5 il. with e (L with oo o a JV

Description

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The invention relates to construction and mining and to be used in the protection of mine workings from groundwater, construction watering, water supply.

The purpose of the invention is to increase the efficiency of groundwater abstraction by a system of absorbing and water wells,

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FIG. 1 shows a flow chart of the formation of a water intake cavity in FIG. 2 - construction of the absorbing well; in figo 3 - filling the cover | in FIG. 4, the completion of the filling of the cavity g in FIG. 5 — operation of the well system

The method is as follows.

From the surface of the array 1 soor; cabin water intake well 2 with its penetration into the absorbing aquifer 3 to its roof 4, From reservoir 3 through the well 2 are pumped water with the removal of part of the soil 5 and the formation of a cavern 6 to groundwater level 8 is observed. In order to increase the size of the cavity 6, the water inlet part 9 of the SQUA is buried; 13 with sprinkling 14 ,, and in the absorbing reservoir 3 - a filter 15, Water from the reservoir 12 goes through the well 11 into the cavity 6 “At the same time, the granular material 17 is fed through the funnel 16 into the well 11 with a density equal to; addicted the flow of water from the well 11 and is distributed in the volume of the cavity b. In the process of pumping water from the well 2 grain material 17 fills first the central part, and then: and the entire cavity 6, At 3TOMj, the level 18 of groundwater in the reservoir 12 ,

With a large reservoir capacity of 3 or the presence of several aquifers, the formation of a cavity 6 and filling 652

Its granular material 17 is conducted in intervals from top to bottom. In X1 each subsequent cycle of filling the cavity 6 sequentially increases the density of the granules of the material 17, which contributes to the complete filling of the cavity 6, its development along the depth of the layer 3 and prevents the development of the cavity 6 horizontally

As a granular material 17, it is advisable to use half-expanded polystyrene, which allows you to adjust the density and size of the granules, and also provides water purification from impurities about

Due to the formation of a stable water intake cavity filled with granulation-1 filtering material, the long-term operation of the water intake well is ensured, and the formation of the system „absorbing wells” makes it possible to centralize the pumping of groundwater from a single stratum, which undermines the effectiveness of groundwater extraction.

Claims (1)

Invention Formula The method of construction of water intake wells, mainly during the drainage of mine workings including the formation of water intake and auxiliary wells, the installation of pipes with holes in them in the lower part of the the formation of a cavity in the well bottom by pumping water and soil from a water well and feeding the granular filter MaTepHanaj into the cavity through the auxiliary well About tl and h and DJ, and so that, in order to increase the efficiency of groundwater extraction system of absorbing and water wells ,; the formation of a cavern and the supply of an osh granularity to it, its material is led from top to bottom with sequential deepening of the pipe in the water well 5, and the granular filtering is fed to the upper zone material with a density equal to the density of water, in the subsequent zones - with successively increasing density, and as an auxiliary well, an absorbing well is used 15    y 1 - : -: - .. . .v: rV - // o ::.: ... ..: -...-. - l ... . : .- :: /: ///. ////// хЛ cfjue.l W FI.2 /////// Yu go e / 2 Compiled by M. Khasin Editor And, Segl. Tehred L. Oli Uk Order 2398/25 Circulation 606 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Proofreader S. Cherni