Gently-inclined broken thin lode medium-depth hole mining method

Abstract

The invention discloses a gently-inclined broken thin lode medium-depth hole mining method. According to the mining method, the sizes of ore rooms and ore pillars are determined according to the mechanical properties of rock mass and the explosion power cast blasting energy distance so as to rationally divide and arrange the ore rooms and the ore pillars; medium-depth blast holes are drilled in the ore pillars, and ore mining is performed; and by combing explosion power transportation and mechanical transportation, the caving ore is transported, such that the safe and efficient mining is performed on the gently-inclined broken thin lode. According to the present invention, by using the medium-depth mining ore extraction method, the operation of the construction personnel under the stope roof can be avoided so as to ensure the safety of the construction personnel and improve the production capacity and the production efficiency of the stope; by using the explosion power transportation technology, the caving ore transportation efficiency is improved, the mining cutting engineering arrangement is optimized, the mining cutting engineering amount is reduced, and the mining process is simplified; and with the method, the problems of low production efficiency, high safety risk of the construction personnel and the like of the traditional room and pillar method can be effectively improved, and the wide practicality is provided.

Description

technical field [0001] The invention belongs to the technical field of underground mining of metal mines, and in particular relates to a medium-deep hole mining method with gently inclined broken thin veins. Background technique [0002] In the process of underground mining of metal mines, the gently inclined and broken thin veins are restricted by the ore body occurrence conditions. In the prior art, the comprehensive method or the room and pillar method is usually used for mining. When using the above two methods in the prior art for mining, the roof of the stope often collapses due to the broken rock body and the unreasonable size of the mine room and the mine pillar, which seriously threatens the safety of the construction personnel. Both the comprehensive mining method and the room-and-pillar method adopt the method of shallow hole blasting. Due to the slow inclination of the ore body, the collapsed ore cannot be transported by gravity and must be transported by auxilia...

AI Technical Summary

Problems solved by technology

However, the gently inclined thin veins are restricted by their ore body conditions, and there is no mature application precedent for medium and deep hole mining. Therefore, if a medium and deep hole mining technology suitable for gently inclined broken thin veins can be developed, it will be very important for realizing the current The safe and efficient mining of gently inclined thin veins in metal mines is of great significance

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