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A method for recovering residual ore bodies on the roof and floor of gently inclined ore bodies

A roof-floor and gently-inclined technology, which is applied in ground mining, mining equipment, underground mining, etc., can solve the problems of difficult mining and poor safety of mining operations, and achieve the goal of eliminating potential safety hazards in empty areas, safe mining operations, and high capacity Effect

Active Publication Date: 2021-10-08
BACKFILL ENG LAB SHANDONG GOLD MINING TECH CO LTD +1
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Problems solved by technology

[0004] Aiming at the above-mentioned problem of mining the residual ore body on the roof and floor of the gently inclined ore body, the present invention discloses a method for mining the residual ore body on the roof and floor of the gently inclined ore body, which can effectively solve the problem of poor safety and difficulty in mining the conventional method of this type of ore body the puzzle

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  • A method for recovering residual ore bodies on the roof and floor of gently inclined ore bodies
  • A method for recovering residual ore bodies on the roof and floor of gently inclined ore bodies
  • A method for recovering residual ore bodies on the roof and floor of gently inclined ore bodies

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Embodiment 1

[0034] from Figure 1-Figure 8 It can be seen that a kind of gently inclined ore body roof and floor residual ore body recovery method provided by the invention comprises the following steps:

[0035] (Step 1), use a 3D laser scanner to scan the old gob 4 form of the original house-pillar method, and measure the span of the mine house s =8m, and the average thickness of the old goaf 4 is obtained by calculating the area and volume of the old goaf 4 h =10m;

[0036](Step 2), from the footwall slope construction connection road to the surrounding rock of the ore body floor, and then construct a footwall along vein transportation roadway 7 along the ore body direction, the section specification of footwall along vein transportation roadway 7 is 3m×3m, From the footwall along the vein transportation roadway 7, an inclined uphill 8 is constructed at intervals of 16m along the inclination direction to the top pillar of the upper middle section. The section specification of the inc...

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Abstract

The invention provides a method for mining the residual ore body on the roof and floor of a gently inclined ore body, which is suitable for mining the residual ore body on the roof and floor of the gently inclined ore body with high grade and good value. The bottom structure of the ore hopper of the scraper is arranged in the surrounding rock of the footwall, and the lower ore body is mined first, and the lower empty space is filled, and then the upper ore body is mined. When the lower ore body is mined, the upper old goaf is used as the free surface and compensation space, and the fan-shaped medium-deep hole is used to caving ore and part of the ore is extracted from the bottom structure of the scraper, and the lower goaf is filled and connected to the top. Then the upper ore body is mined by the point-pillar upward layered filling method. Compared with the prior art, the invention has the advantages of safe mining operation, large stope production capacity, cooperative processing of empty areas while mining, 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 bodies on the roof and floor of a gently inclined ore body, which is suitable for mining the residual ore bodies on the roof and floor of the gently inclined ore body with high grade, good value and good rock stability. 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 . The main reasons for the difficulty in mining the gently inclined medium-thick ore body are as follows: (1) It is difficult to extract the ore from the stope. The inclination angle of the ore body is slow, and the slope of the floor is small. The mined ore can neither be released by its own weight, nor can it be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/22E21F15/00E21F13/06F42D3/00
CPCE21C41/22E21F13/06E21F15/00F42D3/00
Inventor 戴兵程力王剑波赵杰陈英
Owner BACKFILL ENG LAB SHANDONG GOLD MINING TECH CO LTD
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