SU1573093A1 - Device for diverting highly-mineralized ground water from mine working - Google Patents

Abstract

The invention relates to construction and mining, in particular, to lowering the level of groundwater during the drainage of pits and underground workings, and is aimed at eliminating contamination by the highly mineralized waters of rivers and reservoirs adjacent to the water absorption region. This is achieved by the fact that after drilling the receiving wells, sequential injection of liquid glass solution into the soil above the water-absorbing horizon is carried out with the formation of a layer of a plug and an anti-filtration screen above it by pumping an electrolytically treated hydrogen sulfide-containing solution, and the injection of nitric and sulfuric acid solutions is carried out before water-absorbing horizon. Before injection into the soil, waste of clay tailings of the beneficiation plants may be introduced into the solution of liquid glass and hydrogen sulfide-containing solution. 1 hp f-ly, 1 ill.

Description

The invention relates to construction and mining, in particular, to lowering the level of groundwater during the drainage of pits, quarries and underground workings.

The purpose of the invention is to exclude contamination by highly mineralized waters of rivers and reservoirs adjacent to the water absorption region. The drawing shows a section of the soil mass along the wells with the placement of the equipment used.

The method of removal of highly mineralized groundwater from underground workings is carried out as follows.

Water-depleting wells 2 are constructed around the drainable outlet 1, and from the distance from them, the receiving wells 3, cased with a metal perforated filter 4 and recessed into the water-absorbing horizon 5, are drilled.

The incoming well 2, highly mineralized groundwater is pumped out to the surface and diverted through pipelines 6 and 7 to the place of their discharge into the receiving wells 3. One part of the groundwater is fed through a screw 8. to the mixer 9, where 10-20% is added to the water. aqueous aqueous solutions of nitric and sulfuric acids. The remaining part of the groundwater is fed to the diaphragm-free electrolyzer 10. Next, the electrolysis products are fed from a mixer 11, in which waste from the clay tailings of the processing plants is added to them. Prior to this, in a mixer 12, a mortar is prepared on the basis of liquid glass and clay tailings from enrichment plants. Cooked to eat 3

about

with

with

vshd

The thief through the walls of wells 3 injects into the soil above the water-absorbing horizon 5 by means of a pipe 13 and the pairs 14 that limit the height of the injection layer.

I As a result of the injection, a plug is formed in the soil in the ground, above which a plug-in solution is injected into the ground with the help of pipe 13 and packers 14, which is an electrolytically treated sulfur-containing solution. The latter creates in the soil & anti-seepage screen.

Then, the pipes 13 h, the packers 14, are extracted from the wells 3, and after the cement slurry has hardened through the wells 3 from the mixer 9, they discharge into the water-absorbing horizon 5 the extracted highly mineralized water with additions of nitric and (ferric acids

The use of a layer of plugs from the relative-tfo of the quick-hardening liquid vvekla solution prevents penetration into the lower part of the wells 3 and the water-absorbing horizon 5 of the cementing more hardening mortar

Example. Carried out 7from drainage from mineral deposits of underground hydrogen sulfide sodium chloride with total generalization up to 100 g / l and content of hydrogen sulfide up to 120 mg / l, the total inflow of which is 1080 m3 / h. The groundwater is diverted from the place of their rise to the Surface to the place of discharge located 5.5 km away. At the groundwater discharge site 12 receiving wells are drilled in one row with a length of 14 km. The receiving wells lower the pipes which are plugged from the bottom end with side holes at the bottom Some of the pipes with holes are tamponed with packers at a depth of 200 m. A solution of liquid glass with a volume of 0.5 m3 is injected into the layer of soil cut off by the packers. Then the pipes with packers in the receiving wells are raised by 50 m, tamponing is done again with packers and the cement slurry prepared from waste of clay tailings of the processing plants is pumped into the ground.

and products of electrolysis of exhausting sulfur-hydrogen-containing groundwater. To create an impervious screen with a radius around one receiving well.

20 consumed about 50 m3 of cement slurry.

Approximately 10 hours after injection of the cement slurry into the soil, the withdrawn highly mineralized waters with the addition of

Yu and 20% aqueous solutions of nitric and sulfuric acids, which contribute to improved water absorption by softening the kimberlite rock.

The application of the proposed method eliminates the disturbance of the ecological equilibrium in the area of the discharge of highly mineralized water by eliminating their release into the rivers and reservoirs adjacent to this region.

20

Claims (2)

1. The method of removal of highly mineralized groundwater from underground workings, including the rise of water on top (. Ness, their removal to the place of discharge, drilling of receiving wells with their deepening into the water-absorbing horizon, injection into the latter of the diverted water and introduction of 10-20% into them aqueous solutions of nitric and sulfuric acids, characterized in that About to prevent contamination by the highly mineralized waters of rivers and reservoirs adjacent to the water absorption area, after drilling the receiving wells, sequential injection of a liquid glass solution over the water-absorbing horizon is carried out with the formation of a layer of plug and an anti-seepage screen above it by injecting an electrolytic-treated hydrogen sulfide solution, and the introduction of nitric and sulfuric acid solutions is carried out before injecting the wastewater into the water-absorbing horizon. 2. A method according to claim 1, characterized in that waste products of clay tailings of the beneficiation plants are injected into the soil in a solution of liquid glass and hydrogen sulfide containing solution before injection into the ground 0 ten