SU1640455A1 - Method of transportation of stowing mixture - Google Patents

Abstract

The invention relates to the mining industry and can be used in the underground mining of minerals using hydraulic laying of the mined space. The purpose of the invention is to increase the transportation distance of the filling mixture by creating additional pressure in the pipeline. The method involves transporting the pulp by gravity through the vertical and horizontal sections of the PP, flushing the PP with liquid after stopping the filling mixture in the PP. geodetic marks at the inlet and outlet of the slurry pipeline, m, rp, - density, respectively, of pulp and liquid, t / m. Increasing the transportation distance of the filling mixture allows refusing the use of underground pumping stations. 1 il. cl

Description

The invention relates to the mining industry and can be used in the underground mining of minerals using hydraulic laying of the mined space.

The purpose of the invention is to increase the transportation distance of the filling mixture by creating additional pressure in the pipeline.

The drawing shows the scheme of transportation of the filling mixture.

The packing material is fed into the mixing funnel 1 by the conveyor 2. Formed with the pulp along the slurry pipeline 3 laid in the barrel 4 and the slurry pipeline 5,

laid in the mine, enters the area of the bookmark, where the backfill array is erected from it. At the end of the erection cycle of the filling mass, the slurry pipeline is flushed, stopping the supply of stuffing material, turning on the pump 6 to supply liquid from the tank 7, closing the valve 8 mounted in the pipeline 9 connecting the mixing funnel 1 to the slurry pipe 3, switching the flow of liquid from the mixing funnel 1 to the tank 7, open the valve 10 The pump 6 has a capacity greater than the nominal flow rate of the pulp, and the pressure - a value calculated by the ratio

SL

(rp-rzh).

Flushing the slurry pipeline with a pump b allows the pressure and flow rate parameters of the slurry at the bottom of the vertical section of the slurry pipe 3 to remain unchanged both when the filling material is fed into the mixing funnel and after it stops, so that the maximum transportation distance can be taken coming from the pressure of the pulp column, and not the pressure of the liquid column.

The use of the proposed method allows to increase the transportation distance of the pulp under natural pressure by flushing the pipeline with a pump that creates a pressure that compensates for the pressure loss in the lower part of the pipeline that occurs when the filling material stops flowing into the liquid. An increase in the transportation distance limit allows refusing the use of underground pulp pumping stations, which increases the productivity of hydraulic folding works. In addition, the use of the proposed method in comparison with the known method allows to improve the performance of the folding station, since the operation of gradual reduction of the filling of the filling material is excluded from the washing cycle.

Claims (1)

Claims The method of transporting the filling mixture, including moving the pulp by gravity, along the vertical and horizontal sections of the pipeline, washing the pipeline with liquid after stopping the filling of the filling mixture to the pipeline, characterized in that, in order to increase the transportation distance of the filling mixture by creating additional pressure in the pipeline, when washing the fluid at the inlet of the vertical slurry pipeline, the pulponosome reports an initial pressure determined by the ratio H). where AN is the difference of geodetic marks at the entrance and exit of the pipeline, m; / 9п, / 0ж - density, respectively, of pulp and liquid, t / m3.