SU1580036A1 - Method of stowing underground cavities in mining pilars of useful mineral - Google Patents

Abstract

The invention relates to the mining industry and is intended to fill underground mines. The goal is to reduce the cost of backfilling. The pulp lines are constructed from separate strengthened pipelines (CTS) 4, which are laid in the mine workings separately for each isolated section of the open space (CIP). The UTP is laid perpendicularly to the line of the pit open-pit (BC) 10. The initial section of each UTP with plug 6 is taken out of the adjacent nearest to the BC of the isolated UVP. As the BC moves, the initial areas of the UTP are opened, a remote-forming unit 13 is connected to them, and a hydraulic mixture is pumped into the CIP with the help of a remote pump 11. Together with the USP, a drainage pipeline 7 is laid in the mine working, through which the water drained from the CWP is pumped by a pump from the sump 9 to the control panel 13. 1 Cp. f-ly, 2 ill.

Description

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The invention of ot1 osts to the mining industry and may be used in the development of mineral deposits with the laying of the goaf.

The purpose of the invention is to reduce the cost of backfilling.

FIG. 1 shows a diagram of the laying of isolated areas of the goaf; in fig. 2 shows section A-A in FIG. one.

The isolated areas of the excavated space 1 are filled with slurry 2. For this purpose, the workings are pre-insulated using concrete bridges 3 installed in transport runs into the workings. In underground workings, segments of a filling pipeline 4 are laid (perpendicular to the stretch of the quarry) at a safe distance from the pit side. The length of each shortened pipeline is equal to the advance with which the underground cavities are laid relative to the mining ledge of the quarry. The end (end section) of each shortened pipeline furthest from the pit’s side is led into isolated areas of the open space 1 through inclined wells 5 or through rising walls under the roof. The pit closest to the board (the initial section) of each section of the pipeline is taken out of the neighboring section adjacent to the board of the isolated section and closed with a plug 6. A drainage pipeline 7 is placed near the filling pipeline segments, the end section of which is located at the slurry unit. Pump station 8 is pumped back into the quarry to the place of pulp formation, water draining from the laid excavations. Water is pumped out of the underground water collector 9. As the workers of the ledge of the open-pit 10 pry up, the initial sections (blocked ends) of pipeline sections are opened, plugs 6 are removed, connected to the submersible pump pipeline 11.

The stowing material delivered by motor transport in the sump 13 (pulper formation unit) is transformed into pulp and pumped by the pulp pump into an underground excavation (an isolated section of the mining space), into which the end section of the filling pipeline goes. For pulp preparation, water supplied from the underground pumping station 8 through the drainage pipeline 7 is used.

If the angle of inclination of the filling pipeline is large, then the pulp is fed into the underground workings by gravity. As far as the working steps of the quarry, the transfer of the sump 13 in the quarry and the sump 9 under the ground, the drainage pipeline 7 is shortened in the quarry and increased underground.

Claims (2)

1. Method of laying underground voids during excavation of the entire mineral deposits, including the construction of slurry pipelines to isolated areas of exhausted space and their alternate hydraulic folding by connecting the initial sections of slurry pipelines to a slurry unit located on the surface of the open pit, which is designed to reduce costs for filling works, slurry pipelines are constructed in the form of individual sections of pipelines, which are laid in parallel in an underground mine anstve with terminal portions beyond the initial low adjacent to the side of the island portion career gob and podklyu5 chayut initial portions pipeline segments to node pulpoobrazovani as they podvigayuschims opening the pit walls. 2. A method according to claim 1, characterized in that a drainage pipeline is laid in an underground mine working near a section of pipelines, the final section of which is located at the pulping unit and the initial section below the laid section of the open space. Rig. one