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Gently inclined medium-thick-thick large ore body remaining ore stopping method

A technology of gently inclined medium-thick, thick and large ore bodies, which is applied in ground mining, mining equipment, earthwork drilling, etc., can solve the problems of difficult mining and poor safety of mining operations, and achieve the effect of guaranteeing ore recovery rate

Active Publication Date: 2020-04-03
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of the above-mentioned type of gently inclined medium-thick-thick large ore body residual ore mining, the present invention discloses a gently inclined medium-thick-thick large ore body residual ore mining method, which can effectively solve the poor safety of this type of ore body conventional method of mining operation , Difficult problems in recovery

Method used

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  • Gently inclined medium-thick-thick large ore body remaining ore stopping method
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  • Gently inclined medium-thick-thick large ore body remaining ore stopping method

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Embodiment 1

[0032] A method for recovering residual ore of a gently inclined medium-thick-thick ore body provided by the invention comprises the following steps:

[0033] (Step 1), filling the return airway 7 from the upper wall of the top column 1 in the upper middle section, the size of the section of the filling return airway 7 is 3m × 3m, and adopting the filling connection roadway 8, filling the return air shaft 9 and the recovery of the original room and pillar method The old empty area 3 is connected, the connecting roadway 8 and the return air shaft 9 are filled with a section size of 2m×2m, and the old empty area 3 is filled with high-strength cemented filling body 10. The 60-day uniaxial resistance of the high-strength cemented filling body 10 is The pressure should be greater than or equal to 3MPa, and it is not required to be connected to the top when filling, and the old empty space 3 at the top 1.5 is reserved as the free surface and compensation space for the mining and blas...

Embodiment 2

[0039] A method for recovering residual ore of a gently inclined medium-thick-thick ore body provided by the invention comprises the following steps:

[0040] (Step 1), filling the return airway 7 from the upper wall of the top column 11 in the upper middle section, the section size of the filling return airway 7 is 3m × 3m, and adopting the filling connection roadway 8, filling the return air shaft 9 and the recovery of the original room and pillar method The old empty area 3 is connected, the connecting roadway 8 and the return air shaft 9 are filled with a section size of 2m×2m, and the old empty area 3 is filled with high-strength cemented filling body 10. The 60-day uniaxial resistance of the high-strength cemented filling body 10 is The pressure should be greater than or equal to 3MPa, and it is not required to be connected to the top when filling, and the old empty space 3 at the top 1.5 is reserved as the free surface and compensation space for the mining and blasting o...

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Abstract

The invention provides a gently inclined medium-thick-thick large ore body remaining ore stopping method which is applicable to stopping of gently inclined medium-thick-thick large ore body remainingore with a high ore grade and a high value. According to the method, firstly, an original room-and-pillar method goaf is filled with a high-intensity cemented filling body; and during filling, a vacant area being 1.5 to 2 m on the top is reserved to be used as a free surface and a compensation space for upper layer ore body stopping. According to the thickness of an upper layer ore body, a shallowhole room-and-pillar method or a point pillar type upward layered filling method is used for stopping the upper layer ore body according to different conditions, and roof-contacted filling is performed; and then, an upward layering drift-and-fill method is used for stopping a lower layer ore body. Compared with the prior art, the gently inclined medium-thick-thick large ore body remaining ore stopping method has the advantages of safe stopping operation, high ore recovery rate, low dilution rate, maneuverability, flexibility 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 from a gently inclined medium-thick and large ore body, which is suitable for recovering residual ore from a gently inclined medium-thick and large ore body with high grade and good value. Background technique [0002] Gently inclined medium-thick-thick ore bodies are one of the most typical difficult-to-mine ore bodies. Due to the constraints of occurrence conditions, rock drilling, ore extraction, and support, it is difficult to realize safe, efficient, and economical mining of this type of ore body . Before the popularization of filling 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. The method of "extracting the heart" is often used in mining, that is, only the middle position of the ore body is mined...

Claims

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Application Information

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