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Slitting and cutting open pit mining method

A mining method and open-field technology, which is applied in the field of strip-cut open-field mining method, can solve the problems of high loss dilution rate, poor mining safety, and high mining cost, so as to achieve the reduction of dilution loss rate, safety guarantee, Guarantee the effect of recovery effect

Active Publication Date: 2020-06-23
CHINA MINMETALS CHANGSHA MINING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to aim at the deficiencies of the prior art, and provide a strip-cutting type open-field mining method to solve the problems of poor mining safety, high loss and dilution rate and mining high cost problem

Method used

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  • Slitting and cutting open pit mining method
  • Slitting and cutting open pit mining method
  • Slitting and cutting open pit mining method

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Embodiment Construction

[0047] This slitting of the present invention digs out and cuts type open field mining method, comprises the following steps:

[0048] a. Stope design, arrange the stope along the direction of the ore body, divide the stope into middle section and section along the vertical height of the ore vein, and take the height of the middle section as the stope height;

[0049] b. Accurate engineering, arrange the corresponding middle section transportation roadway and subsection transportation roadway at the bottom of the middle section and section;

[0050] c. Cutting works. At both ends of the stope, a cutting uphill that is connected with the middle transportation roadway and the upper section transportation roadway is respectively excavated;

[0051] d. For the mining project, excavate a mining space parallel to the cutting uphill by adopting the method of separate mining and separation of ore and rock every 6 to 8.5m between the two cutting uphills;

[0052] e. Take out the mine: ...

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Abstract

The invention discloses a splitting and digging-cutting type open stoping method, which comprises the following steps: a, designing of a stope; b, pretreatment for stoping; c, cutting; d, stoping: tunneling a stoping space, parallel to cutting ramps, between the two cutting ramps every 6 to 8.5 m by adopting a mode of separate mining and discharging of ore-bearing rock; e, digging-mining based oredischarging: firstly, chiseling horizontal and inclined holes from the middle parts of the inner sides of the cutting ramps and the middle parts of two sides of the stoping spaces towards spaces between the cutting ramps and the stoping spaces and between the stoping spaces, wherein the holes are arrayed in a zigzag manner, and the digging mining in each direction is performed for multiple times,and the width of an ore body dug and mined at each time is not more than 1.5 m; a rock explosive is used for explosion to discharge ores, and the ores are transported through iron chutes laid in thecutting ramps or the stoping spaces; ores which are not thrown into the iron chutes through the explosion are transported into the cutting ramps or the stoping spaces through an artificial rake; f, after the digging-mining is completed, continuously upwards tunneling a stoping space of the same specification; g, repeating the steps e and f; h, completing the digging-mining work.

Description

technical field [0001] The invention relates to the technical field of open-spot mining, in particular to a slitting and cutting-type open-spot mining method. Background technique [0002] Whether each mine can choose a mining method that matches its own mining technical conditions directly involves the mining dilution loss rate, and then affects the economic benefits of the mine and the social benefits of the enterprise like a domino effect. Among them, the mining of gently inclined ultra-thin ore bodies is a difficult problem in the mining industry at home and abroad. Due to the thin ore body and gentle dip angle, the working space is limited, the ore cannot slide by itself, mechanized equipment cannot be used, the production efficiency is low, and the loss of dilution is large. , cutting and filling costs are high, and production costs are high. These factors seriously affect the effective use of resources and strictly restrict the production and development of mines. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/30
CPCE21C41/30
Inventor 杨宁尹贤刚肖木恩谭富生彭亮
Owner CHINA MINMETALS CHANGSHA MINING RES INST
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