RU2693086C1 - Method of removing brine during filling chambers - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used in development of mineral deposits by chamber system with chamber filling. Proposed method comprises preparatory works on upper and lower beds to be filled with chambers. Initially at the mouth of the ore discharge holes of upper and lower formations there installed are filtering wells. Filtration crosspieces are installed at mouths of filled upper chambers, and blind bridges are erected in extraction and ventilation gates of the lower formation. Sectional brine-receiver is located in the lowest point of the lower formation in end waste chambers, and pumps of the district pump station are placed in the extraction formation of the lower formation. Then pulp-by-flow wells are drilled from soil of chambers of upper formation into roof of chambers of lower formation and in interchamber pillars of upper formation. Lining material is fed into lower bed chambers via pulp-bypass wells from upper formation, brine is discharged through filtration wells of ore discharge wells to conveyor track, then through the wells to the section brine-force pipe, from which is pumped by pumps of the pump station, after which the upper reservoirs chambers are filled, note here that said brine is drained via filtration wells of the ore-desiccation wells to lower formation, then into conveyor drift and then through wells to sectional brine pipe, from which they are pumped by pumps of pump station.

EFFECT: high degree of filtration of brine from filling operations.

1 cl, 3 dwg

Description

The invention relates to mining and can be used in the development of mineral deposits chamber system with the laying of cameras.

There is a method of hydraulic bookmarking on gently dipping seams, including the construction of inclined filtering elements, the flow of pulp into the chamber, removal of filtered water (US Pat. 2166639 IPC E21F 15/08 Method of hydraulic laying of chambers on gently dipping seams / Borzakovsky BA, Kotlyar EK ; Applicant and patent holder of OJSC Uralkali, JSC VNII Galurgii. - No. 9127856; Declared December 29, 1999; Published May 30, 01).

The disadvantage of this method is the necessity of penetrating a special inter-chamber connection, which is necessary for brine overflow from the pledged areas to the desalination tank, while for clarification of the brine, installation of filtering elements (boards) in each pledged chamber is required.

The closest in technical essence of the present invention is a method for removing brines from pledged chambers by drifts, while providing for a brine drainage groove. Brines for preparatory workings are served in a brine tank located in the lowest part of the pledged area. Waste chambers or a conveyor drift are used as a desoldering tank. The pumps are installed either in the coupling passed in the rear sight or in the conveyor gateway. Concrete sills are erected to hold brines (Laying work at Verkhnekamsk potash mines / BA Borzakovsky, LM Papulov. - Nedra. - Moscow, 1994. - P. 115-116, 92-96,).

The disadvantage of this method of collecting brines is that the brine enters the brine collector directly from the pledged chambers, which implies the presence of small particles in it (that is, the brine is not completely clarified). When laying a significant number of chambers, breaks occur, filtering jumpers and leaks, which leads to the ingress of "muddy" brine in the desalter, which in turn leads to silting of the useful capacity of the desoldering tank and breaking the pumping units. Also to the disadvantage of the described method can be attributed to the location of the pumping equipment in special niches (covered in the pillars) or the soil behind concrete thresholds. The drilling of a niche by drilling and blasting and the erection of concrete brine retaining bridges are labor-intensive processes.

The technical result consists in a high degree of filtration of the brine from filling works, due to the sedimentation of the solid part of the brine in the conveyor drift, which prolongs the service life of the equipment of the pumping station, as well as reducing the number of jumpers on the lower layer, since lintels are installed only in excavation and ventilation drifts, which helps to reduce costs and simplify hydraulic folding works.

FIG. 1 shows a plan for the upper layer being laid; FIG. 2 is a plan along the lower seam bed; FIG. 3 - a section through the preparatory workings.

In the drawings indicated: 1 - vent drift; 2 - the camera; 3 - backfill array; 4 - filter jumper; 5 - ore discharge well; 6 - district pumping station; 7 - slurry pipe; 8 - roadway; 9 - brine collector; 10 - deaf jumper; 11-bypass wells; 12 - conveyor drift; 13 - filter wells.

The method is applied at dip angles from 2 to 10 degrees and is carried out as follows.

Preparing to bookmark cameras.

Filter wells 13 are installed at the mouth of the ore-drainage wells 5 drilled when working on the excavation drift 8 of the lower and upper reservoir 13. The filter well is a perforated pipe (steel or polyethylene) covered with filter cloth with a diameter of 200-273 mm and a height of about 1, 5-2 m and is required for the primary filtration of brine coming from the pledged chambers into the conveyor drift 12. The conveyor drift during the backfilling period performs the function of drainage generation (Fig. 1, 2, 3).

Local brine 9 is placed in the lowest place of the lower reservoir, in the marginal waste chambers. The pumps of the precinct pumping station 6 are placed in the excavation drift 8, therefore, no additional penetration of saboks, niches, chops or the construction of concrete thresholds is required to accommodate the pumping equipment (Fig. 3).

In the excavation 8 and ventilation drifts 1 (near the precinct pumping station) of the lower layer, blind jumpers 10 are erected, which are necessary to prevent the backfill material and unclarified brine from getting into the desalination tank 9 of the precinct pumping station 6. The blind jumper is erected from the bar, planks, and retaining brine (Fig. 2).

In the mouths of the pledged chambers of the upper layer, filter jumpers 4 are installed, the task of which is to keep solid particles of the filling material in the chamber. Filter bridges of the upper layer can be bulk (ore spills in the chambers), drilling and blasting (undermining the roof and soil), combined (drilling and blasting + embankment), wooden (timber, boards, filter cloth). In the marginal part of the area of the upper reservoir is mounted precinct pumping station 6 (Fig. 1).

Then, pulp bypass wells are drilled 11. To block the chambers of the lower reservoir, pulp bypass wells drill from the soil of the upper seam chamber into the roof of the lower seam chamber, and to bookmark the upper seam chambers, the pulp bypass wells are drilled in the inner pans from the adjacent adjacent chamber. The number of slurry wells depends on the hypsometry of the chambers and its length. Then assemble the backfill slurry 7 (Fig. 1).

Backfilling work.

For the laying of the lower layer, the filling material is fed from the upper layer into the chambers 2 of the lower layer through the pulp crossing wells 11. The filling material is deposited in the chambers, forming the filling mass 3, and the brine through the filter wells 13 of the ore-drain wells 5 enters the conveyor drift 12. The conveyor drift is small the pulp particles settle, and the “clarified” brine enters the wells in the brine tank 9, from where it is pumped out by the pumps of the local pumping station 6 (Fig. 2, 3).

The upper layer chambers are laid down by feeding the filling material through the slurry pipeline 7 located in the excavation drift into the chamber and, further, into the neighboring chambers through the slurry wells 11 drilled into the chamber chamber pores. The brine is filtered through jumpers 4 and flows from the chambers into the excavation drift 8, from where filtering wells 13 ore-drainage wells 5 flow to the lower reservoir, then to the conveyor drift 12 and through the wells to the precinct reservoir 9. The “clarified” brine is pumped out by pumps of the district pump oh station 6 (Fig. 1, 3).

The use of this method will reduce the time to prepare for the tab by reducing the labor costs of penetrating the workings for removing the brine to the brine collector, the number of erected filter bridges (shields), meanwhile improving the quality of the pumped brine (reducing the amount of solids in the brine), which in turn increase the reliability of the pumping equipment.

Claims (2)

1. Method of removal of brine when laying chambers, including drilling of ore-discharge and pulp-passage wells, erection of filter jumpers, discharge of brines to the local brine collector, characterized in that initially they install filter wells at the mouth of the ore-drainage wells, and in the excavation and ventilation slots of the lower formation they build detritus after which the filling material is supplied to the chambers of the lower reservoir through the pulbo-passage wells from the upper reservoir, brine is withdrawn through the filter wells of the ore passing wells on the conveyor drift, then through the wells in the district brine collector, from where they pumped out by pumps of the district pumping station, then the chambers of the upper layer are laid down, while the brine is drained through the filter wells of the bore holes into the lower layer, then in the conveyor drift and the district brine collector. 2. The method according to p. 1, characterized in that the pumps of the precinct pumping station is placed in the excavation drift of the lower reservoir.

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