Thin-ore-body shallow hole shrinkage method without sill pillar

A shallow-hole ore retention method and a technology without bottom pillars is applied in the field of mine mining technology, which can solve the problems of investing a lot of manpower, material resources and time, and achieve the effects of improving the recovery rate, reducing labor intensity and simple process.

Inactive Publication Date: 2013-05-08
ANSTEEL GRP MINING CO LTD
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Problems solved by technology

[0012] Therefore, the existing shallow hole ore retention method usually requires various bottom works su

Method used

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  • Thin-ore-body shallow hole shrinkage method without sill pillar
  • Thin-ore-body shallow hole shrinkage method without sill pillar
  • Thin-ore-body shallow hole shrinkage method without sill pillar

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[0035] The specific embodiments of the present invention will be described below in conjunction with the drawings.

[0036] Including mining engineering, cutting engineering, mining engineering and mining engineering, it is characterized in that it includes the following steps:

[0037] The said standard mining project:

[0038] Such as image 3 , Figure 4 , Figure 5 , At the lower level, at the lower level of a mine building. After the phase transportation roadway is completed, the forklift is digging into the ore body every 5-8m to the mine roadway 2-18, and at the same time from the phase transportation roadway 2-1 to the left and right sides of the mine The column 2-8 is tunneled into the connecting road 2-19 of the courtyard. After being tunneled into the ore body, the courtyard 2-9 is drilled upwards, in the vertical direction of the courtyard 2-9, every 4-6m, towards the courtyard 2-9. Dig from left and right to the connecting road 2-10 entering the stope, and the connect...

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Abstract

The invention relates to a thin-ore-body shallow hole shrinkage method without sill pillar. The thin-ore-body shallow hole shrinkage method comprises the engineering of accurate mining, cutting, mining and ore withdrawal. The method is characterized by comprising the following steps of: in the engineering of accurate mining, tunneling a core withdrawal roadway, a communicating channel of a raised shaft, the raised shaft and a communicating channel entering a stope to an ore body after a level haulage roadway is completed; in the engineering of cutting, tunneling a cutting level gallery along the trending direction of the ore body inside the ore body, opening two outer sides of the cutting level gallery to a boundary line of the ore body after the cutting level gallery is completed, and simultaneously carrying out coping treatment on the cutting level gallery so as to form an ore block bottom free surface; in the engineering of mining, drilling a hole with a shadow hole rock drilling machine after the engineering of cutting is completed, carrying out rock drilling blasting mining from bottom to top so as to form a stope working surface, carrying out coyote blasting work on a top pillar after shallow mining is completed, and then carrying out large ore drawing ore removal work and ore removal. The thin-ore-body shallow hole shrinkage method without sill pillar is simple, efficient and safe, and no sill pillar remains. The recycle of ore columns is increased, and the recovery ratio and utilization ratio of resources are improved.

Description

[0001] technical field [0002] The invention belongs to the technical field of mining technology, in particular to a method for retaining thin ore bodies with shallow holes without bottom pillars. Background technique [0003] In the mining of underground metal deposits, the comprehensive method, room and pillar method, caving method, and shallow hole retention method have been very mature, but for the mining of steeply inclined thin ore bodies less than 4 meters wide, there is no efficient and safe mining method so far. method. Many mines abandon such ore bodies, which is not only a waste of mining engineering, but also a waste of resources. [0004] The mining development trend with increasing structural parameters is not suitable for the mining of thin ore bodies. [0005] For the mining of thin ore bodies, it is best to use the shallow hole retention method. [0006] For the steeply inclined ore body, it is divided into several stages according to a certain height fr...

Claims

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Application Information

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IPC IPC(8): E21C41/16
Inventor 宫国慧郭海涛陈晓云田迎春高英勇
Owner ANSTEEL GRP MINING CO LTD
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