Open coal mine end slope mining, discharging and filling mining method

Abstract

The invention discloses an open coal mine end slope mining, discharging and filling mining method. Firstly, a main gateway and an auxiliary gateway are tunneled at the position of a pit bottom of an open coal mine end slope in parallel in the inclination direction of a coal seam, a transportation roadway and a rail roadway are tunneled in the trend direction of the coal seam in parallel, and an open-off cut and an integrated ventilating system are formed in the manner of penetrating through the transportation roadway and the rail roadway; a stoping and filling working face is arranged on the open-off cut, a crushing station is arranged near a mining right boundary, and meanwhile a vertical transportation system is arranged near the crushing station; and open slag is transported to a goaf while coal cutting of a coal cutter is carried out, filling work is carried out, and a repetitive cycle is carried out until stoping and filling of the stoping and filling working face of the whole end slope are completed. According to the method, the problem of coal accumulation of the end slope can be solved, the recoverable reserve of an open coal mine is increased, meanwhile, environmental pollution caused by open refuse dump slag can be reduced, and the mining method is a green mining technology which is safe, efficient and high in adaptability, and has broad application prospects.

Description

technical field [0001] The invention relates to an open-pit coal mine end-side mining method and belongs to the technical field of coal mine green mining. Background technique [0002] About 20% of my country's annual total output of coal resources is open-pit mining. The large-scale mining of open-pit mines has had a huge impact on the ecological environment of the mining area, mainly including the occupation and destruction of a large amount of land by the dump site of the open-pit mine, and the pollution of the surface by leaching water from the dump site. Water, land, and slag have not been effectively used as cheap waste rock filling materials; at the same time, due to the existence of the slope angle of the open-pit mine, the amount of side-side coal pressure is huge, so the safe and efficient recovery of side-side coal pressure has become a major issue in open-pit coal mines. The existing end-side coal mining technology has made some progress and practical applications,...

AI Technical Summary

Problems solved by technology

[0002] About 20% of my country's annual total output of coal resources is open-pit mining. The large-scale mining of open-pit mines has had a huge impact on the ecological environment of the mining area, mainly including the occupation and destruction of a large amount of land by the dump site of the open-pit mine, and the pollution of the surface by leaching water from the dump site. Water, land, and slag have not been effectively used as cheap waste rock filling materials; at the same time, due to the existence of the slope angle of the open-pit mine, the amount of side-side coal pressure is huge, so the safe and efficient recovery of side-side coal pressure has become a major issue in open-pit coal mines. The existing end-side coal mining technology has made some progress and practical application, but there are still problems that the recovery rate of side-side resources is low and affects the stability of the slope, which needs to be further resolved

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