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Discontinuous multilayer ore body safe stoping method

A non-continuous ore technology, applied in ground mining, earth square drilling, underground mining, etc., can solve the problems of difficult mining, waste of resources, and abandonment of upper and lower ore bodies, so as to improve mining efficiency, avoid waste of resources, and improve Effect of Mining Rate

Pending Publication Date: 2021-12-03
HUBEI SHANSHUYA MINING SCI & TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For such vertically and horizontally discontinuous ore bodies, it is very difficult to mine, and often only one layer is mined, or the mining is stopped after encountering waste rocks in the same layer, resulting in the direct abandonment of the upper and lower ore bodies, resulting in a waste of resources

Method used

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  • Discontinuous multilayer ore body safe stoping method
  • Discontinuous multilayer ore body safe stoping method
  • Discontinuous multilayer ore body safe stoping method

Examples

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Embodiment

[0042] In the mine house of 60*60 meters, the middle construction cuts the uphill lane 2, the side construction cuts the horizontal lane 1, and the other side construction cuts the downhill lane 3. Construct three cutting roadways to facilitate the mining of the upper, middle and lower layers of ore respectively. The ore in the upper layer is transported through the uphill lane 2, the ore in the middle layer is transported through the level lane 1, and the ore in the lower layer is transported through the downhill lane 3.

[0043] After the cutting of the roadway is completed, the upper layer of ore is mined first, and the ore pillar 4 is set according to 5*5 meters. After forming 2 rows of ore pillars, stop and then retreat.

[0044] When the upper layer is mined, the upper mountain roadway 2 cut in the middle is lowered along the bottom roadway to cut the horizontal roadway 1 on one side, and then the second layer of ore is mined according to the room-and-pillar method.

[...

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Abstract

The invention discloses a discontinuous multilayer ore body safe stoping method. The discontinuous multilayer ore body safe stoping method comprises the steps that a gate way, an upper mountain way and a lower mountain way are cut on an ore body, the upper mountain way is located between the gate way and the lower mountain way, the upper mountain way serves as an upper layer ore stoping transportation channel, and the gate way serves as a middle layer ore transportation channel for one-time bottom descending stoping; the lower mountain way serves as a lower-layer ore transportation channel for secondary bottom descending stoping, ore pillars are formed in the processes of upper-layer ore stoping, middle-layer ore primary bottom descending stoping and lower-layer ore secondary bottom descending stoping, then stoping is conducted on the ore pillars, and the stoping process is repeated in sequence till stoping of the whole ore body is completed. According to the discontinuous multilayer ore body safe stoping method, discontinuous ore bodies in the vertical plane and the plane and ore bodies encountering barren rocks in the same layer are exploited, the upper and lower layer ore bodies are prevented from being discarded, the mining rate is improved, and operation is easy and convenient.

Description

technical field [0001] The invention belongs to the technical field of mining, and relates to a method for safely mining non-continuous multi-layered ore bodies. Background technique [0002] Some phosphate ore fields belong to the super-large phosphorite deposits of the Doushantuo period in the Late Sinian, and the ore layer with industrial value is the lower phosphorus layer (Ph 1 3 ) and the middle phosphorus layer (Ph 2 2 、Ph 2 1 ), in which the middle phosphorus layer consists mainly of Ph 2 2 、Ph 2 1 Two layers of ore, Ph 2 2 、Ph 2 1 The distance between the two layers of mines is 0-18 meters, and in the area where the distance between the upper and lower layers is only 0-3 meters, it is impossible to mine the upper and lower layers separately. At the same time in Ph 2 2 In the same layer of ore body, there are still 1-2 meters of interlayer stones, and the ore is further divided into 3 layers. And in the same plane, there are three layers, two layers o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/22
CPCE21C41/22
Inventor 朱宗俊刘建杨友才李瑶秦晋付德红曹阳黄燚东董俊华
Owner HUBEI SHANSHUYA MINING SCI & TECH DEV
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