Mining method of efficient big collapse area ore mining

A mining method and ore technology, which is applied in ground mining, mining equipment, underground mining, etc., can solve problems such as long cycle time, large amount of support engineering, and low mining efficiency

Active Publication Date: 2018-11-13
安徽大昌矿业集团有限公司
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Problems solved by technology

However, the supporting engineering volume of the downward approach mining method is relatively large, and cementation filling is carried out after the approach mining, the mining efficiency is low, and the cycle time is long

Method used

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  • Mining method of efficient big collapse area ore mining
  • Mining method of efficient big collapse area ore mining
  • Mining method of efficient big collapse area ore mining

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Embodiment Construction

[0031] See attached picture.

[0032] The low-concentration fine tailings are cemented and filled in the collapsed area, so that the ore is consolidated into a whole, and a mining method for efficient mining of ore in a large collapsed area is adopted. The specific implementation steps are as follows:

[0033] Stope layout

[0034] The length of the stope is 40m thick, the width is 12m, and the height is 50m. A large-diameter blasthole rock drilling roadway 12 is constructed in the middle of the upper and middle section of the stope. Diameter blast hole 10 falls ore. Drilling roadway 4 at the bottom of the stope is densely drilled by the middle blasthole to squeeze the blasting groove, and the blasting of the middle blasthole forms a V-shaped ore-receiving cutting ditch 11, and the 6m³ scraper is transported from the exit roadway 6 on both sides of the stope to the chute, and the chute 7 Arranged on the other side of the transportation roadway 1 along the footwall, the stop...

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Abstract

The invention discloses a mining method of efficient big collapse area ore mining. Fine tailings are used for filling the collapse area in a cemented mode, and concentration is 50%, and therefore scattered particles can be bonded into an integrated part and mining is convenient. Construction method of downward middle section is used, a mined stope cemented filling body is used as a top plate for the next middle section stope. Grouting is carried out on medium gun hole area which is difficult to construct to solve the problem of rock drilling in medium gun holes. Cement paste pouring is carriedout in large holes which are difficult to construct, when the cement paste seeps down and solidifies, rock drilling construction is carried out to solve the problem of large hole rock drilling. Wellcutting and groove cutting are not carried out at the bottom of the stope. Cutting grooves are formed by squeeze blasting in a medium gun hole encryption area. Drilling chamber construction is not carried out on the upper portion of the stope. Sector-shaped large diameter gun holes are constructed in roadways. Downward sector-shaped hole blasting mining is adopted, and therefore rock drilling construction is convenient.

Description

Technical field: [0001] The invention belongs to the technical field of underground mine mining, and relates to a mining method for emptying and then filling, which is mainly applicable to the ore mining method in the large collapse area, and in particular is a mining method for efficiently mining the ore in the large collapse area. Background technique: [0002] In mining, due to various reasons, stopes sometimes collapse, and even several stopes collapse at the same time, affecting several middle sections above the stope, with a wide range, great impact, and serious collapse to the surface. The collapsed area is filled and treated, and the ores in the collapsed area after treatment are mostly mined by the downward layered filling mining method. However, the supporting engineering volume of the downward approach mining method is large, and cementation filling is performed after the approach mining, the mining efficiency is low, and the cycle time is long. Invention conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/22E21F15/00F42D3/04
CPCE21C41/22E21F15/005F42D3/04
Inventor 周伟永吉少杰程伟柏磊高鹏孙红春夏太生王志良
Owner 安徽大昌矿业集团有限公司
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