Prevention and control method for falling of pumice at roof and two slopes of stope in medium-long hole mining

A control method and technology of mining method, applied in surface mining, mining equipment, underground mining, etc., can solve the problems of unguaranteed equipment safety, high safety hazard, and difficulty in ensuring safety, so as to reduce ore input and mining operation cost, installation and installation. The effect of simple process and low protection cost

Active Publication Date: 2015-10-07
SHANDONG GOLD GROUP +1
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Problems solved by technology

The biggest problem encountered in the process of popularization and application is that due to the high ceiling of the stope, the pumice on the two sides and the upper plate cannot be checked and pried, and it is difficult to ensure the safety of the operation in the stope, especially in the bottom cleaning of the stope and the bottom of the stope During construction and othe

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  • Prevention and control method for falling of pumice at roof and two slopes of stope in medium-long hole mining

Examples

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[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] 1. Picking and cutting engineering:

[0017] like figure 1 , when the whole (or a certain section) of the ore vein is mining and quasi-engineering, the stope is arranged perpendicular to the trend of the ore body.

[0018] Arrange cutting and mining joints on both sides of the stope perpendicular to the trend of the ore body (the section entering the ore body is called cutting through veins), and construct and cut the air return patio 12 to the upper air return roadway.

[0019] In the center of the stope, the ore-exiting and mining joints are arranged perpendicular to the trend of the ore body (the section entering the ore body is called the ore-exiting vein).

[0020] The mining sequence of the stope is from the two wings to the center, and the mining is combined with the retreating mining.

[0021] After the cutting and mining-coupling and...

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Abstract

The invention relates to a prevention and control method for falling of pumice at the roof and two slopes of a stope in medium-long hole mining. According to the invention, a protection air bag is installed at a central-and-upper position of a subsection; high pressure wind is injected into the protection air bag through a pressure ventilation pipeline in the stope so as to allow the wall of the air bag to extrude rock, so falling of loose ore blocks at the two slopes is prevented and ore blocks falling from the roof are prevented from directly falling into a bottom cleaning work zone of the subsection; thus, operation safety in the subsection is guaranteed.

Description

technical field [0001] The invention relates to a method for preventing and controlling pumice caving in an underground mine stope. Background technique [0002] At present, domestic metal mines are actively introducing low-cost, high-efficiency pillarless medium and deep hole mining methods. The biggest problem encountered in the process of popularization and application is that due to the high ceiling of the stope, the pumice on the two sides and the upper plate cannot be checked and pried, and it is difficult to ensure the safety of the operation in the stope, especially in the bottom cleaning of the stope and the bottom of the stope During construction and other operations, the potential safety hazard is even greater. Referring to foreign experience, individual large-scale mines have introduced remote-control scrapers, which basically guarantee the safety of operators when mining, but the safety of equipment cannot be guaranteed; The laying and binding of steel bars m...

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Application Information

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IPC IPC(8): E21C41/22E21F15/00E21D19/06
Inventor 马云庆王瑞星王辉何顺斌李威杜飞
Owner SHANDONG GOLD GROUP
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