Mining method for dunn-bass-containing steeply-inclined thin ore vein groups

A mining method and technology for thin ore veins, which are applied in the mining field of steeply inclined thin ore vein groups/groups with rock inclusions, can solve the problems of difficulty in multi-layered rock-incorporation mining, the shape of steeply inclined thin ore veins, etc., so as to avoid the mixing of waste rock. , the effect of improving mining efficiency

Active Publication Date: 2018-05-08
NORTHWEST RES INST OF MINING & METALLURGY INST
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AI Technical Summary

Benefits of technology

This patented technology allows for flexibility when excavating tunnels with rocks that are hard or difficult to break down due to their shape. It also includes methods like drilling holes into them beforehand without causing damage from blinds on top. By treating these areas afterwards, it becomes easier than just digging up everything together instead of trying different ways alone. Overall, this innovation improves efficient recovery rates by allowing more material to be recovered while minimizing any harm caused during subsequent operations.

Problems solved by technology

The technical problem addressed by this patented technology relates to improving the efficiency and accuracy of drilling tunnels through difficult rock deposits containing multiple layers or "vesselons". Current mechanical techniques have limitations such as requiring frequent changes based upon the size of the target material being worked during excavations due to changing shapes caused by different types of materials present at varying depth levels within the tunnel's opening. This results in increased costs associated with maintenance work and downtime while waiting for replacement equipment.

Method used

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  • Mining method for dunn-bass-containing steeply-inclined thin ore vein groups
  • Mining method for dunn-bass-containing steeply-inclined thin ore vein groups

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Embodiment Construction

[0016] A tungsten deposit in Northwest China is a black tungsten deposit. The ore body is re-existed in the quartzite. The boundary of the ore rock can be distinguished with the naked eye (the ore body is black and the quartzite is white). The ore body is a steeply inclined ore body with a dip angle of 55°-75°; The ore body is produced in layers with complex thickness variations. Part of the interlayer-containing vein group adopts the mining method of a kind of steeply inclined thin-vein group / group containing interlayer rock according to the present invention, and the production capacity of the stope is about 45-55t / d.

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as Figure 1-2 Shown, the mining method of the present invention's steeply inclined thin vein group / group containing intercalated stones is implemented in this mine as follows:

[0019] Structural parameters o

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Abstract

The invention belongs to the technical field of underground mining methods and discloses a mining method for dunn-bass-containing steeply-inclined thin ore vein groups. The mining method comprises thesteps that the steeply-inclined thin ore vein groups and dunn bass layers are regarded as an integral ore mass, then the ore mass is divided into ore blocks, and the ore blocks are mined in a layeredmode; in the ore blocks, the dunn bass layers are mined through upward shallow holes, and caving waste stone is discharged from an in-vein artificial ore pass; then the ore vein groups are mined through horizontal blastholes, and caving ores are laid flatly as a stoping operation platform so as to continue operation; and operation is repeatedly conducted till mining reaches to a previous middle-section bottom column, ore block mining is finished, and ore drawing is conducted in quantity. The mining method has the technological characteristics that the advantages of a shrinkage mining method,a wall-cutting and filling mining method and a roadway type mining method are integrated, the ores can be recycled in quantity, the defects of a single mining method are overcome, and the mining efficiency can be improved greatly.

Description

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Claims

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Application Information

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Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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