A kind of natural caving mining method of inverted cone-shaped ore accumulation

Abstract

The invention relates to a natural caving mining method of rounded table-shaped ore accumulation. The rounded table-shaped ore-accumulating trough is arranged in a determinant manner, the top surface of the rounded table is used as the entrance of the caving ore, and the lower top surface of the rounded table is connected to the chute as the ore outlet, which can make the natural The caving ore falls into the ore-gathering tank of the inverted round table and slides into the chute, which has the advantages of reducing operation links, reducing operating costs, and realizing continuous ore extraction. It is suitable for mining metal mines.

Description

technical field [0001] The invention relates to a mining method in an underground mine, in particular to a natural caving mining method with an inverted cone-shaped aggregated ore, which is suitable for mining applications in an underground mine. Background technique [0002] The conventional natural caving method adopts a triangular long ore-gathering trough structure (upper width is wide and lower is narrow), the ore-gathering troughs are separated by peach-shaped long ore pillars (approximately triangular), and the mining roadway is constructed at the bottom of the peach-shaped ore pillars. The ore is shoveled from the ore collecting trough by the scraper through the ore outlet (ore loading route) to the chute, and then lifted to the surface after being crushed at the bottom of the chute. The improved related patents CN 109322670 A, CN 110593876 B, CN 208885330 U, CN 112033243 A and CN 104632221 B are now considered as background technologies, and the background technolog...

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Problems solved by technology

Now it is considered that its improved related patents CN 109322670 A, CN 110593876 B, CN 208885330 U, CN 112033243 A, CN 104632221 B are background technologies, and there are two main problems in this background technology: 1. Caving ore needs to be transported to The slip shaft cannot achieve continuous ore extraction, the ore extraction efficiency is low and the operating cost is high; 2. Due to the weight of the caving ore and the impact of the caving, it is difficult to support the mining roadway at the bottom of the peach-shaped ore pillar, and the support and repair costs are high. The patents CN 111980707 A, CN 208252138 U, and CN105041334 B proposed bottom roadway support and reinforcement measures, but did not substantially solve the difficult and costly problems of roadway support

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