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Large-scale horizontal jamb mining method under existence of bottom caving group occurrence

A mining method and ore pillar technology, applied in underground mining, surface mining, special mining, etc., can solve problems such as long mining operation time and large amount of horizontal ore pillar resources

Inactive Publication Date: 2013-06-12
JINCHUAN GROUP LIMITED
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Problems solved by technology

[0004] The invention fully considers the characteristics of large amount of horizontal ore pillar resources and long mining operation time, and also fully considers the problem of resource recovery rate, and uses the mining method of downward cementation and filling to provide a complex geological condition of caving group at the bottom Mining method under

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  • Large-scale horizontal jamb mining method under existence of bottom caving group occurrence
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  • Large-scale horizontal jamb mining method under existence of bottom caving group occurrence

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[0017] specific implementation plan

[0018] Below in conjunction with accompanying drawing in conjunction with example the use of the present invention will be further described ：

[0019] 1. The mining plan and mining organization adopting step-wise advancement: Assuming that a super-large-scale caving group with a length of about 600 m and an average thickness of about 120 m is planned to be a horizontal pillar 1, the height of 4.8 m can be first Divide into several layers 8, and then divide each layer into several panels according to 100m×100m, mark the odd-numbered panels and double-numbered panels in sequence according to the ore body trend, and divide each panel into 5m wide×4.8m high The first mining route of each panel is called ore room 3, and the later mining route is called ore pillar 4; the mining room 3 of the double-numbered panel is mined first, and the ore pillar 4 of the single-numbered panel is mined later ,vice versa.

[0020] 2. When affected by ground ...

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Abstract

The invention discloses a large-scale horizontal jamb mining method under the existence of a bottom caving group occurrence. The large-scale horizontal jamb mining method comprises the following steps of: planning a caving group occurrence horizontal jamb by adopting a stepped forward mining scheme as well as a mining organization, firstly dividing the horizontal jamb into a plurality of sub-layers according to the height of 4.8m, dividing each layer into a plurality of disc areas, marking the single-number disc areas and the double-number disc areas in sequence according to the direction of an ore body, dividing each disc area into 5m-wide*4.8m-high admission passages, calling the admission passages firstly mined in each disc area as ore chambers, calling the admission passages mined later as ore jambs, firstly mining the ore chambers in the double-number disc areas and then mining the ore jambs in the single-number disc areas, and vice versa. By adopting the method, precious rare metal ores with large ground pressure, broken ore rocks and complicated geological conditions can be safely and effectively recovered; and the method has the advantages of high recovery rate and low dilution ratio, and can meet the demands of the horizontal jamb on safe recovery and resource recovery.

Description

technical field [0001] The invention belongs to a mining method, in particular to a mining method under complex geological conditions of caving groups at the bottom, and mainly relates to horizontal ore pillars under complex geological conditions in large metal mines. Background technique [0002] For mining under the condition of caving clusters, small-scale ore pillar mining is currently adopted. However, for complex geological conditions with broken rock conditions and developed joints, the characteristics of large resources of horizontal ore pillars and long mining operation time must be fully considered, and The issue of resource recovery rate should also be fully considered. And along with the large-scale mining of horizontal ore pillars, it is necessary to study the mining method of horizontal ore pillars with large-area discontinuous caving groups at the bottom. Contents of the invention [0003] The object of the present invention is to provide a mining method fo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/22
Inventor 周桥杨志强
Owner JINCHUAN GROUP LIMITED
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