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A method of mining residual ore on the roof and floor of a gently inclined goaf

A roof-floor and gently-inclined technology, which is applied in ground mining, mining equipment, earthwork drilling, etc., can solve the problems of difficulty in mining, poor safety of mining operations, and low efficiency, so as to eliminate hidden dangers in empty areas and reduce mining and filling costs Effect

Active Publication Date: 2021-01-12
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problem of mining residual ore on the roof and floor of the gently inclined goaf, the present invention discloses a method for mining residual ore on the roof and floor of the gently inclined goat, which can effectively solve the problem of poor safety, high cost and low efficiency of the conventional method of mining of this type of ore body , Difficult problems in recovery

Method used

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  • A method of mining residual ore on the roof and floor of a gently inclined goaf
  • A method of mining residual ore on the roof and floor of a gently inclined goaf
  • A method of mining residual ore on the roof and floor of a gently inclined goaf

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Embodiment 1

[0031] from Figure 1-Figure 5 It can be seen that a kind of gently inclined goaf roof and floor residual ore mining method provided by the present invention comprises the following steps:

[0032] (step 1), adopt the three-dimensional laser scanner to scan the old goaf 4 form of the original house-and-pillar method, measure the span of the mine house s=10m, and calculate the old goaf by the area and volume of the old goaf 4 4 Average thickness h=10m;

[0033] (Step 2), from the footwall ramp construction connection road to the orebody floor surrounding rock, then construct a footwall along vein transportation lane 7 along the ore body, the footwall along vein transportation lane 7 section specification is 3m * 3m, From the footwall along the vein transportation roadway 7, construct an inclined uphill 8 at intervals of 20m along the inclination direction to the top column in the upper middle section. The inclined uphill 8 is located on the center line of the two mine houses i...

Embodiment 2

[0040] from Figure 1-Figure 5 It can be seen that a kind of gently inclined goaf roof and floor residual ore mining method provided by the present invention comprises the following steps:

[0041] (step 1), adopt the three-dimensional laser scanner to scan the old goaf 4 form of the original house-pillar method, measure the span of the mine house s=8m, and calculate the old goaf by the area and volume of the old goaf 4 4 Average thickness h=9m;

[0042] (Step 2), from the footwall ramp construction connection road to the orebody floor surrounding rock, then construct a footwall along vein transportation lane 7 along the ore body, the footwall along vein transportation lane 7 section specification is 3m * 3m, From the footwall along the vein transportation roadway 7, a sloped uphill 8 is constructed at intervals of 16m along the inclination direction to the top column of the upper middle section. The sloped uphill 8 is located on the center line of the two mine houses in the ...

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Abstract

The invention provides a gently inclined minded-out area roof and floor residual ore stoping method. The method is suitable for the stoping operation of gently inclined minded-out area roof and floorresidual ore with high ore grade and good value. A carry-scraper ore output hopper bottom structure is arranged in foot wall rock, a lower-layer ore body is firstly stoped, then an upper-layer ore body is stoped, and finally a minded-out area is filled. When the lower-layer ore body is stoped, an upper old mined-out area is regarded as a free surface and a compensation space, a fan-shaped middle-deep hole is adopted to collapse ore, a part of the ore is output from the inside of the carry-scraper ore output bottom structure, then the fan-shaped middle-deep hole is adopted, a lower mined-out area is regarded as a free surface and a compensation space, the upper-layer ore body is collapsed, collapsed ore is completely output in the carry-scraper bottom structure, and then the mined-out areais filled with a low-strength cemented filling body or a non-cemented filling body. Compared with the prior art, the method has the advantages of safe stoping operation, high stope production capacity, low cost and the like.

Description

technical field [0001] The invention relates to the field of underground mining, in particular to a method for recovering residual ore on the roof and floor of a gently inclined void, which is suitable for mining the residual ore on the roof and floor of the gently inclined void with high grade and good value. Background technique [0002] Before the popularization of filling mining technology and medium-deep-hole and deep-hole mining technology, many old mines and small mines in my country often adopted the shallow-hole room-and-pillar method for mining when mining gently inclined medium-thick-thick ore bodies, which were controlled by the roof. Due to the limitation of support and support, the method of "cutting out the heart" is often used in the mining process, that is, only the middle position of the ore body is mined, the mining height is 6-8m, and the ore is cleaned out, leaving the roof and floor of the empty area. A layer of ore body has not been mined, resulting in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/22E21F15/00
CPCE21C41/22E21F15/00E21F15/005
Inventor 戴兵陈英贺桂成张志军章求才
Owner NANHUA UNIV
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