Mining method for continuously stoping thick and large broken ore bodies by alternately ascending

Abstract

The invention relates to a mining method for continuously stoping thick and large broken ore bodies by alternately ascending. The cross section of the section structure of the primary stoping is a hexagon, the width of the upper edge and the lower edge of the hexagon is 25%-35% of the width of the middle waist, the distance between bottom plates of the odd stopes and the even stopes in the vertical direction is 40%-60% of the height of the stopes in the section, the odd stopes are stoped in the panel firstly, after stoping along the full length of the stopes is completed, filling retaining walls are erected on the lower panels of the stopes, and the filling retaining walls are filled in the stopes; the goaf is filled with cemented filling bodies, after stoping of all odd stopes in the same section is completed, stoping of even stopes in the next section is started, when the even stopes are filled, the goaf is filled with tailing filling bodies in the lower half part, and the goaf is filled with cemented filling bodies in the upper half part; and after stoping of the even stopes is completed, stoping of the odd stopes of the next section is carried out, and continuous stoping is carried out through alternate ascending. The stoping method improves the production capacity of a single stope and reduces the mining operation cost, and further has the outstanding advantages of simple process, safety and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of mining, and relates to a mining method for alternately rising and continuously mining thick and large broken ore bodies. This method is mainly applicable to the recovery of oblique thick and broken ore bodies in underground gold mining. Background technique [0002] In the mining of inclined thick and broken ore bodies, due to the relatively broken ore bodies, when adopting the layered filling mining method, in order to ensure the safety of the roof, a large number of security pillars must be reserved, resulting in a large ore loss rate. If the security pillar is not reserved, the upward approach mining method is adopted, and the mining efficiency is low. For other general medium and deep hole mining methods, the cross-sectional structure of the stope is usually a rectangular structure, which is suitable for the stope with thick and stable ore body, but not for the stope with thick and broken ore body. ...

AI Technical Summary

Problems solved by technology

[0002] In the mining of inclined thick and broken ore body, because the ore body is relatively broken, when adopting layered filling mining method, in order to ensure the safety of the roof, a large number of security pillars must be reserved, resulting in a large ore loss rate

If the security pillars are not reserved, the upward mining method is adopted, and the mining efficiency is low

For other general medium and deep hole mining methods, the cross-sectional structure of the stope is usually a rectangular structure, which is suitable for the stope with thick and stable ore body, but not for the stope with thick and broken ore body.

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