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Inverted-truncated-cone-shaped ore gathering and natural caving mining method

A mining method and technology with a rounded cone shape, which are used in underground mining applications, and the field of natural caving mining with rounded cone-shaped ore accumulation, can solve the problems of difficult roadway support, high cost, low mining efficiency, etc., and reduce production and operation. The effect of cost, reduction of intermediate links, and reduction of engineering volume

Active Publication Date: 2021-08-06
ZIJIN MINING GROUP
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Problems solved by technology

Now it is considered that its improved related patents CN 109322670 A, CN 110593876B, CN 208885330U, CN 112033243A, CN 104632221B are background technologies. There are two main problems in this background technology: 1. Caving ore needs to be transported to the chute by a scraper, which cannot be realized Continuous mining, low mining efficiency and high operating costs; 2. Affected by 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. For this reason, the patent CN 111980707 A, CN 208252138 U, CN105041334 B have proposed bottom roadway support and reinforcement measures, but have not substantially solved the difficult problem of roadway support and high cost

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  • Inverted-truncated-cone-shaped ore gathering and natural caving mining method

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Embodiment Construction

[0021] Such as Figure 1-5 As shown, the natural caving mining method of a rounded table-shaped ore gathering proposed by the present invention is provided with a determinant arrangement of rounded table-shaped ore-gathering grooves, the top surface (1) of the rounded table is used as the entrance of the caving ore, and the lower top surface of the rounded table (2 ) is connected to the chute as the ore outlet, which can make the natural caving ore fall into the ore-gathering tank of the inverted round table and slide into the chute automatically.

[0022] During implementation, the row spacing (a) of the rounded table ore gathering tank is equal to the column spacing (b) and both are 50m, and the diameter of the upper surface (1) of the rounded table ore gathering tank is equal to the center of the upper top surface (1) of the two tangent rounded table ore gathering tanks The distance (c) is 1.414×50=70.7m, the diameter of the lower top surface (2) of the rounded platform and...

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Abstract

The invention relates to an inverted-truncated-cone-shaped ore gathering and natural caving mining method. Inverted-truncated-cone-shaped ore gathering grooves are arranged in rows and columns; the upper top surfaces of the inverted truncated cones are used as caved ore inlets, and the lower top surfaces of the inverted truncated cones are connected with draw shafts to be used as ore outlets, so that naturally caved ores can fall into the inverted-truncated-cone-shaped ore gathering grooves and automatically slide into the draw shafts; and the method has the advantages of reducing operation links, reducing operation cost and realizing continuous ore discharge, and is suitable for being applied to exploitation of 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 for rounded frustum-shaped ore accumulation, which is suitable for mining in an underground mine. Background technique [0002] The conventional natural caving method adopts a triangular long ore-accumulating trough structure (wide at the top and narrow at the bottom), and the ore-accumulating troughs are separated by peach-shaped long ore pillars (approximately triangular), and the mine roadway is constructed at the bottom of the peach-shaped ore pillars. Use the scraper to load the caving ore in the ore-accumulating tank through the ore-discharging route (ore-loading route) to the chute, break through the bottom of the chute and lift to the surface. Now it is considered that its improved related patents CN 109322670 A, CN 110593876B, CN 208885330U, CN 112033243A, CN 104632221B are background technologies. There are two main problems in thi...

Claims

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Application Information

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IPC IPC(8): E21C35/00E21C35/20E21C37/00E21F13/04
CPCE21C35/00E21C35/20E21C37/00E21F13/04
Inventor 陈景河彭云
Owner ZIJIN MINING GROUP
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