SU1765422A1 - Mineral deposit hydraulic well mining method - Google Patents

Abstract

SUMMARY OF THE INVENTION: Drill wells with fastening walls with clay mortar; process pipelines and equipment are mounted in them. The minerals are washed away at the place of occurrence and the slurry is released to the surface with a decrease in the level of the liquid in the chamber. The slurry is divided into solid and liquid phases. The liquid phase is directed by gravity flow through an open curvilinear spiral-shaped channel made around the well. The initial part of the channel is connected to a source of liquid, and the drain is connected to the wellbore 3 or

Description

The invention relates to mining and can be used to extract loose minerals through wells by scouring them.

The known method of borehole hydraulic mining of various-grained minerals includes drilling wells, installing technological equipment, washing out minerals at the place of occurrence, dispensing slurry to the surface, washing out minerals in ancillary face.

However, flushing water in the additional bottomhole requires pressurized water for the jetting machine, which reduces production efficiency due to increased energy costs.

The closest to the proposed technical essence is the method of downhole mining of minerals, including drilling wells, installing process piping and equipment, washing out minerals at the place of occurrence, dispensing slurries to the surface with a decrease in the level of fluid in the separation chamber

on the solid and liquid phases, the return of the liquid phase to the well by gravity flow

However, the gravity flow energy is not used to erode rocks and the overall extraction efficiency is reduced.

The aim of the invention is to increase the efficiency of mining in the development of open-pitched loose rocks of the mineral due to their additional erosion by gravity flow.

FIG. 1 and 2 show the scheme for implementing the proposed method; in fig. 3 - section A-A in FIG. 1 (I, II, III, IV - consecutive positions for additional erosion).

In order to implement the method, a well 1 is drilled using mud to keep the walls of the well from collapse. Then mount the process piping 2 in the well and on the surface. A well is installed on the alluvium map to drain clarified water and a channel is drawn along the surface of the well around the well, which converges to the well.

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Carry out the method as follows.

Pressurized water and compressed air are supplied to well 1 through process pipelines, and the minerals are washed away with a downhole jetting machine and they are diluted in the well bottom zone 3 wells. Through pipelines 2, the slurry 4 is pumped out to the surface and drained onto the map of the alluvium 5. Here the slurry is separated into water and solid by suction. Water b through the drain well and channel 7 is directed to the well. In the well, the water level 8 is maintained below the surface level. Therefore, the flow erodes the mineral in the bottom 9. The proposed method provides an additional erosion of the increase in production from the well.

Claims (1)

Invention Formula Method of borehole hydraulic mining of minerals, including drilling wells, installation of technological pipelines and equipment, erosion of minerals at the place of occurrence, delivery of slurry to the surface with a decrease in the level of fluid in the chamber, separation of the slurry into solid and liquid phases, return of the liquid phase to the well by gravity flow, characterized in mining during the development of open-pit loose mineral rocks due to their additional erosion by gravity flow, the drilling of wells is carried out with the walls fastened with a clay mortar, and the flow of the liquid phase is directed along an open curved spiral-shaped channel running around the well, with the initial part of the channel communicating with the source of the liquid phase and the drain section with the wellbore. Fmg1 . G T x / / H FIG. 2 & -L 7 Fig.Z