Mechanized benching room-and-pillar mining method

A mining method and step-type technology, applied in the field of mechanized step-type room-and-pillar mining method, can solve the problems of low level of mechanization in stope production operations, high labor intensity of workers, small effective raking distance of electric rakes, etc., so as to reduce pedestrian ventilation. The amount of climbing and cutting works, the labor intensity of workers is reduced, and the effect of reducing the effect of cutting works

Active Publication Date: 2017-06-13
CHINA MINMETALS CHANGSHA MINING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the ore body inclination angle is less than or equal to 10°, trackless equipment such as rock drilling rigs and scrapers can directly enter the stope for operation, the mining operation efficiency is high, and the production capacity of the stope is large; Due to the limitation of its climbing ability, the equipment cannot enter the stope for operation. At this time, only the air leg rock drill can be used to drill rock, and the electric rake is used to extract the ore. The labor intensity of the workers is high, and the effective distance of the electric rake is small and the efficiency is low. Low level of mechanization and small capacity in production operations
At the same time, the amount of mining and cutting in the stope is large, and the cost of mining and cutting is high. When the slope of the ore body is large

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0037] from figure 1 and figure 2 As can be seen, this mechanized stepped room-and-pillar mining method of the present invention comprises the following steps:

[0038] (1) Stope layout: The stope is arranged along the ore body trend, the height of the middle section is 20-30m, the length of the stope along the strike is 100-120m, the oblique length of the stope is not more than 80-100m, and 4-30m is reserved between the stopes along the inclination. A 6m wide intercolumn 1, a mid-section transportation lane 3 is arranged between the upper and lower adjacent middle sections, and a top column 4 and a bottom column 2 are reserved. The bottom column is 4-6m wide, and the top column is 4-6m wide; , Divide the ore body along the strike into subsections 5 for mining, the width of the subsections is 6-8m, and set point columns 6 between the subsections 5, the size of the point columns is 3m×3m~4m×4m, and the distance between the point columns along the ore body 8~10m, the distance...

Embodiment 2

[0045] from image 3 and Figure 4 As can be seen, this mechanized stepped room-and-pillar mining method of the present invention comprises the following steps:

[0046] (1) Stope arrangement: The stope is arranged along the ore body trend, the height of the middle section is 20-30m, the length of the stope along the strike is 100-120m, the slope length of the stope is greater than 80-100m, and 4-6m is reserved along the inclination between the stopes Wide inter-pillar 1, mid-section transport lane 3 is arranged between the upper and lower adjacent middle sections, and top column 4 and bottom column 2 are reserved. The width of the bottom column is 4-6m, and the width of the top column is 4-6m. The ore body is divided along the dip It is divided into upper and lower sections, and a continuous column 12 with a width of 4-6m is left between the sections; when the stope is mined, the ore body is divided into sub-sections 5 along the strike for mining, and the sub-section width i...

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Abstract

The invention discloses a mechanized benching room-and-pillar mining method. Internal-pulse slope ramp mining preparation is adopted in a stope, and the main mining and development engineering comprises a stope slope ramps, a pedestrian and ventilation raise and a cutting roadway; during stope mining, stopping is conducted between ribbons from top to bottom, working faces start from the intersections of the stope slope ramp and the ribbons and are propelled to the two sides along the strike, and the upper ribbon stoping working face is ahead of the lower ribbon stoping working face; the first-mining ribbon takes the cutting roadway as a free face and compensation space for rib expanding and coping; one pilot tunnel is arranged at the advanced stoping working face on the lower sides of the other ribbons, and then the pilot tunnel serves as a free face for rib expanding and coping on the corresponding ribbons; stope mining is conducted through operation of trackless equipment, and during ribbon stoping in the stope, a trigonal bench is reserved on the bottom of the lower side of each ribbon, and the trigonal benches serve as running channels and operation platforms of the trackless equipment; during ribbon stoping, the trigonal benches on the bottoms of the adjacent ribbons on the upper portion are recycled synchronously. The production capacity and efficiency are high, the mining and development engineering quantity is low, and the construction difficulty and the cost are low.

Description

technical field [0001] The invention belongs to the field of underground mine mining, in particular to a mechanized stepped room-and-pillar mining method for mining gently inclined thin to medium-thick ore bodies. Background technique [0002] For gently inclined thin to medium-thick ore bodies, the room-and-pillar method is usually used for mining at home and abroad. When the ore body inclination angle is less than or equal to 10°, trackless equipment such as rock drilling rigs and scrapers can directly enter the stope for operation, the mining operation efficiency is high, and the production capacity of the stope is large; Due to the limitation of its climbing ability, the equipment cannot enter the stope for operation. At this time, only the air leg rock drill can be used to drill rock, and the electric rake is used to extract the ore. The labor intensity of the workers is high, and the effective distance of the electric rake is small and the efficiency is low. The mecha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16
CPCE21C41/16
Inventor 林卫星周礼欧任泽詹进甯瑜琳宋兴
Owner CHINA MINMETALS CHANGSHA MINING RES INST
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