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Thick and large ore body mining method

A mining method and technology for thick and large ore bodies, applied in surface mining, mining equipment, underground mining, etc., can solve the problems of small stope production, poor safety conditions, and low production efficiency.

Active Publication Date: 2020-11-20
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the segmented open-field method is used for mining, the segmental height is generally 10-12m. The rock drilling equipment generally adopts the YGZ-90 rock drill, and the power consumption or the scraper is used to extract the ore. Insufficient field production, etc.; layered filling mining method is a mining method in which layered mining and layered filling are carried out sequentially from top to bottom, and operations are carried out under the protection of layered artificial roof protection. Since operators must enter the stope , many operating links, complex mining process, resulting in poor safety conditions, low production efficiency, high labor intensity, high mining cost, small mine production capacity and other deficiencies

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  • Thick and large ore body mining method
  • Thick and large ore body mining method
  • Thick and large ore body mining method

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Embodiment 1

[0033] Present embodiment is an example of the thick ore body mining method described in the present invention, comprises the following steps:

[0034] (1) The stope is arranged vertically to the direction of the ore body, which is divided into a one-step stope and a two-step stope. The width of the stope is 15-20m, and the length is the thickness of the ore body; the stage height is 80-100m.

[0035] (2) In the surrounding rocks of the upper and lower walls 10-15m away from the ore body, excavate the out-of-vein transportation roads 1 and 5 along the ore body, and use the mining roadway 2 arranged between the first-step stope and the second-step stope Unicom, the bottom roadway 3 is arranged in the center of the bottom of the stope, and the ore loading route 4 with a spacing of 8-12m is used to connect the ore exit level roadway 2 and the bottom roadway 3.

[0036] (3) Lower the down-the-hole drilling rig rock drilling unit 9 to the rock drilling face with the hoisting equipm...

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Abstract

A thick and large ore body mining method comprises the following steps that a stope is arranged in the direction perpendicular to an ore body, stages are divided in the vertical height direction, a stope preparation raise is arranged in the center of the stope, an annular conveying channel of a trench ore removal structure is arranged at the bottom of the stope, and a lifting chamber is arranged at the top of the stope; a down-the-hole drill drills annular horizontal deep holes from the two sides of a raise, and centralized rock drilling, fractional blasting, reinforced ore removal and delayedfilling are conducted. The mining and cutting work amount is small, the mechanical operation degree is high, the production efficiency is high, the production capacity is large, personnel do not needto enter a stope for operation, and safety conditions are good.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a method for mining thick and large ore bodies, which is mainly applicable to the mining of steeply inclined thick ore bodies and gently inclined extremely thick ore bodies with relatively regular ore bodies requiring large production capacity and high efficiency. Background technique [0002] Thick and large ore bodies are usually mined by VCR method, segmented empty field method or upward layered filling method. When VCR mining is used, large-diameter deep holes are drilled through the rock drilling chamber at the upper part of the stope. Rock drilling equipment adopts ROC-306 down-the-hole drilling rig, KYD-200 underground roller cone drilling rig and Simba 261 down-the-hole drilling rig special equipment etc.; manual loading of powdered ammonium nitrate explosives or emulsion explosives, and the caving ore is discharged from the bottom structure by a scraper. Generally, the m...

Claims

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Application Information

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IPC IPC(8): E21C41/22E21F15/00F42D3/04F42D1/10F42D1/00
CPCE21C41/22E21F15/005F42D3/04F42D1/10F42D1/00
Inventor 李学锋宋子贺齐发富
Owner GUANGXI UNIV
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