A multi-unit combined intensive mining method for gently inclined medium-thick ore bodies

Abstract

The invention relates to a multi-unit combine intensive mining method suitable for a gentle-dipping medium-thicknessore body. The intensive mining method comprises the steps that anore body is dividedinto ore blocks with equal width in the strike direction, then all the ore blocks are divided into strip-shaped stopes in the dip direction of the ore body, n continuous stopes of S1, S2...Sn in allthe ore blocks are combined into one unit, and then m units of U1, U2...Um are combined for intensive mining according to the production capacity of a mine, stoping sequences of all the units and stopes arethe unit U1 and the stopeS1,the unitU2 and the stopeS1,...,the unit Um and the stope S1,the unitU1 and thestopeS2,the unitU2 and the stopeS2,...,the unitUm and the stope S2,...,the unitU1 and the stopeSn,the unit U2 and the stope Sn,...,the unitUm and the stope Sn. The intensive mining method is suitable for a gentle-dipping medium-thicknessore body of which the dipping angle of the ore bodyis greater than 15 degreeand ore rock is moderately stable, through a form of unit combination, the independence of the technology and intensive mining of the stopes are achieved, a large scale of ore removal is ensured, the ground pressure is effectively controlled through backfilling, and finally safe, economical, and efficient mining are achieved.

Description

technical field [0001] The invention belongs to the field of underground mining, in particular to a multi-unit combined intensive mining method suitable for gently inclined medium-thick ore bodies. Background technique [0002] For the gently inclined medium-thick ore body, especially the gently inclined medium-thick ore body with an ore body dip angle greater than 15°, it is difficult to mine, and it is even more difficult to achieve efficient and safe mining. At present, the mining methods for mining this type of ore body mainly include the room-and-pillar method, the caving method, the upward horizontal layered filling mining method, and the horizontal slitting open field and subsequent filling mining method. These mining methods usually only consider the requirements of the third-level ore volume and production capacity, which leads to mining engineers often only considering the layout of stopes and quasi-stopes in mining design, and even in order to maximize profits, re...

AI Technical Summary

Problems solved by technology

These mining methods usually only consider the requirements of the third-level ore volume and production capacity, which leads to mining engineers often only considering the layout of stopes and quasi-stopes in mining design, and even in order to maximize profits, resulting in stopes "blossoming everywhere" ”, each stope layout is scattered

In addition, in a single stope, there are often overlapping and mutual interference of filling, mining, rock drilling, blasting, mining and cutting processes, which not only leads to low utilization of equipment, but also greatly reduces the safety of operations. This traditional The mining method is difficult to adapt to the mining of deep deposits with more complex conditions

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