Nearly horizontal narrow vein panel mining method

A mining method and ultra-thin ore technology, which is applied in ground mining, mining equipment, earth square drilling, etc., can solve the problem of increased dilution rate of mining width stope, affecting mining efficiency, and inability to use high-efficiency mining equipment and other issues, to achieve the effect of improving resource recycling and improving the efficiency of mining operations

Inactive Publication Date: 2019-04-05
NORTHWEST RES INST OF MINING & METALLURGY INST
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AI Technical Summary

Problems solved by technology

Unable to use high-efficiency mining equipment
Excessive mining width will easily lead to a sharp increase in the stope dilution rate
If the mining width is too small, it will cause high labor intensity, which will further affect the mining efficiency

Method used

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  • Nearly horizontal narrow vein panel mining method

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] like figure 1 As shown, the panelized mining method of near-horizontal extremely thin veins, the method is carried out according to the following steps:

[0027] Step 1: Firstly, divide the ore body into a 200m×200m panel area 1 by developing roadways in the vein along the direction of the ore body;

[0028] Step 2: Divide ore block 2 in panel 1, each ore block 2 has a width of 22-26m and a length of panel 1, perpendicular to the direction of ore block 2, and arranges a 2m×2m strip in the center of panel 1 The main transportation lane 3 of the panel, and a panel chute 4 is arranged at both ends of the main transportation lane 3 of the panel;

[0029] Step 3: In the ore block 2, a stope 7 with a width of 22-26m and a height of 1.2m is arranged every 10m;

[0030] Step 4: Reserve a 4m×8m ore pillar 5 between every two ore blocks 2, an...

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Abstract

The invention belongs to the field of mining technology and particularly relates to a nearly horizontal narrow vein panel mining method. The early horizontal narrow vein panel mining method comprisespanel division, panel main haulage roadway arrangement, mining site arrangement, pillar preforming, drilling, mining and pillar recovery. By means of shallow hole ore breakdown and by combining scrapers and small carry-scrapers for ore extraction, the nearly horizontal narrow vein panel mining method can greatly improve the mining efficiency. Meanwhile, by replacing pillars with flexible box supports to recover all the pillars, the nearly horizontal narrow vein panel mining method can greatly improv the resource recycling rate. The nearly horizontal narrow vein panel mining method is applicable nearly horizontal narrow veins with a recovery thickness smaller than 0.8 m and an inclination of 0-5 degrees.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a panelized mining method of near-horizontal ultra-thin ore veins. Background technique [0002] Near-horizontal ultra-thin ore veins refer to ore bodies with a thickness of less than 0.8m and a dip angle of 0° to 5°. Most of these ore bodies are sedimentary or metamorphic sedimentary deposits. This type of ore body is mostly mined by mining methods such as comprehensive method, room and pillar method, and approach filling method. Constrained by the occurrence state of the ore body itself, the size of the stope is limited, and the production volume of the stope is small. Unable to adopt high-efficiency mining equipment. If the mining width is too large, it is easy to cause a sharp increase in the stope dilution rate. If the mining width is too small, the labor intensity will be high, which will further affect the mining efficiency. Therefore, improving the current ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/22E21F15/00E21F13/04
CPCE21C41/22E21F13/04E21F15/00
Inventor 王成财张永亮王忠泉高忠郝显福焦满岱刘财林严文炳柴衡山刘涛张睿孟慧媚赵文奇
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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