A safe and efficient mining method for gently inclined medium-thick ore bodies

Abstract

The invention discloses a gently inclined medium thick ore body safe and efficient mining method. A middle haulage roadway is arranged on an ore lower plate along an ore trend, a middle haulage crossroadway is perpendicular to the ore trend and arranged, a plate area inclined roadway is tunneled from an opening of the middle haulage roadway, section roadway connection ways are tunneled from the opening, section roadways are perpendicular to the section roadway connection ways and arranged, an upper layering connection roadway and a lower layering connection roadway are vertically tunneled ina section roadway to layering elevations, a layering roadway continues to be horizontally tunneled to an ore bottom plate, a rock drilling roadway and an ore discharging roadway are vertically formedin the layering roadway, an ore cross roadway is communicated with the ore discharging roadway in a tunneled manner, the lower layering connection roadway continues to be tunneled to an ore upper plate, an air return filling roadway, a filling air return chamber and a filling air return well are arranged, and a draw shaft connection roadway and an ore draw shaft are arranged near openings of upperlayering connection roadway and the lower layering connection roadway, medium-deep hole ore breaking is implemented in a stope, ores are discharged by an automatic carry-scraper, and subsequent filling of a goaf is implemented. According to the method, running of the automatic carry-scraper is facilitated, and the method has the advantages of safety in mining operation, high stope production capacity, high efficiency and the like.

Description

technical field [0001] The invention belongs to the field of underground mining, in particular to a safe and efficient mining method for gently inclined medium-thick ore bodies. Background technique [0002] With the gradual depletion of shallow mineral resource mining, the mining of ore deposits gradually develops to the deep. However, with the continuous increase of mining depth, the mining operation environment tends to be harsh, facing the severe challenge of "three highs and one disturbance". Therefore, how to realize the safe and efficient mining of deep deposits has become one of the important issues to be solved urgently for the sustainable development of the mining industry. [0003] In recent years, with the rapid rise of mine informatization and intelligent technology, it has become the development trend of deep mines to liberate workers from heavy work and harsh environments through remote control of mining and loading equipment. Among them, the development of ...

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Problems solved by technology

Among them, the room-and-pillar method has a simple process, and the commonly used equipment is an electric rake, which requires a large number of point pillars. The production capacity is small and the loss rate is large, and it is difficult to apply an automatic scraper. Although the caving method has a large production capacity, it is easy to cause ground pressure imbalance. Or the surface subsides, and the ore bulk rate is difficult to control, which may easily cause the idleness of the automatic scraper; although the upward horizontal layered filling mining method has a low dilution loss rate, the process is complicated, the production capacity is low, and the amount of ore collapse at one time is small. The automatic LHD has a lot of idle time, many dispatching areas, and low work efficiency; the horizontal slitting open field and then filling mining method can be divided into the form of the inclined ramp in the vein and the form of the footwall connection roadway according to the layout of the mining and cutting works, and the slope in the vein The advantage of the road form is that the amount of mining and cutting engineering is small, and the mining and cutting engineering is mostly arranged in the ore body, and the amount of by-product ore is large. The disadvantage is that the slope is large, there are many turns, the path is long, and the number of base stations is installed. It is difficult to promote automatic LHD ;The advantage of the connection roadway in the footwall is the low loss rate, but the disadvantage is that the mining and cutting works are large and the slope of the connection roadway is large, especially for the downhill connection roadway, the drainage condition is poor, the road surface is muddy, and the working efficiency of the automatic scraper is low

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