A method for ore dropping of vertical deep hole spherical charge

Abstract

The invention provides a vertical deep hole spherical powder charge ore breaking method which comprises the following steps of S1, tunneling a footwall haulage roadway, a loading and transporting roadway, an access road gategateway, an access road crossdrift and an ore room; S2, monitoring the number of joint and fracture development of the inner part of an ore body to be caved of an area to be mined and the spatial position distribution, and determining a fracture smashing area in the area to be mined; S3, undercutting in an undercutting roadway; S4, rock drilling, powder charging and detonating the undercutting roadway by keeping away from the fracture smashing area, and then outputting ores; S5, tunneling the next area to be mined, and cyclically operating until ore bodies in all areasto be mined are fully mined from top to bottom. The vertical deep hole spherical powder charge ore breaking method provided by the invention has the beneficial effects that the distribution rule and the extending range of joint fractures in the ore bodies can be obtained, and a mining method has wide applicability.

Description

technical field [0001] The invention relates to the technical field of underground mining methods, in particular to a vertical deep-hole spherical drug bag ore-dropping method. Background technique [0002] The stage mine mining method is a kind of open-field mining method that uses a deep hole to return to the mining house. According to the method of ore collapse, it can be divided into the mining method of the horizontal deep hole stage, the mining method of the vertical deep hole stage, and the mining method of the vertical deep hole spherical powder bag falling stage. [0003] With the development of large-diameter deep-hole mining technology, the current research and development of drilling rigs is mainly focused on improving rock drilling efficiency, reducing the geometric size of the machine body, improving maneuverability and rock drilling accuracy, and automatic remote control. In the above methods, The vertical deep hole spherical charge falling stage mine mining ...

AI Technical Summary

Problems solved by technology

[0004] 1) The mine house mining method in the stage of vertical deep hole spherical powder bag falling has higher requirements on the regularity of the ore body, which requires that the shape of the ore body in the mine changes less, and there should be no interlaced joints or interspersed with broken pieces If this method is used in mining areas where the shape of the ore body changes greatly, or there are aforementioned interlaced joints and interspersed with broken zones, the vertical deep hole will easily pass through the broken zone, causing deep hole blockage during mining, and due to The reason for deep hole mining is that it is difficult to deal with the blocked deep holes during the mining process;

[0005] 2) The mine house mining method at the stage of the vertical deep hole spherical powder bag falling into the ore has high requirements for rock drilling technology, and the mining process is largely limited by the specific conditions of the ore body in the mining area. When the ore body situation is more complicated, the mining Efficiency will be greatly restricted;

[0006] 3) Some shortcomings, such as the need to maintain the roof of the large-section rock drilling chamber, strict requirements on the specifications of explosives, and the difficulty of mechanization in construction such as explosives loading, hole cleaning, and measurement and control

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