Downward high-layer cemented filling mining method

A cemented filling and mining technology, applied in underground mining, filling, surface mining, etc., can solve the problems of large amount of mining and cutting engineering, difficult to widely use, large cross-section, etc. The effect of reducing the cost of recovery

Active Publication Date: 2021-01-05
CHINA MINMETALS CHANGSHA MINING RES INST
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  • Application Information

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Problems solved by technology

However, the method provided by this patent requires a large amount of mining and cutting work and a large section, which leads to a large overall engineering investment and is difficult to be widely used.

Method used

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  • Downward high-layer cemented filling mining method
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  • Downward high-layer cemented filling mining method

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[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present invention are shown in the drawings, and the steps related to the present invention are omitted. Invent other details that don't really matter.

[0033] Additionally, it should be noted that the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also Other elements not expressly listed, or inherent to the process, method, article, or apparatus are also included.

[00...

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Abstract

The invention provides a downward high-layer cemented filling mining method. The method comprises the steps of stope arrangement, accurate mining cutting, stoping and filling. In the stoping process,layers of the preset number are divided into stoping subareas in a downward drift and upward layer stoping synergistic effect manner, and stoping is conducted on ore bodies of subarea lower layers ineach stoping subarea through a drift method; and then ore bodies of subarea upper layers are stoped in a retreating manner in an upward picking mining manner. By means of the manner, the overall stoping strength and the mechanization degree can be effectively improved, so that the ore removal efficiency is greatly improved, and the overall production capacity of a stope is improved. Meanwhile, based on the division of the stoping subareas in the method, a plurality of layer connecting roadways required by a plurality of layers originally can be reduced to one, so that the mining preparation work amount is greatly reduced, the mining efficiency is further improved, the ton ore stoping cost is reduced, and the method has the characteristics of simple process, high safety, high production capacity, low ton ore cost and the like.

Description

technical field [0001] The invention relates to the technical field of extremely soft broken ore body mining, in particular to a downward high-layer cemented filling mining method. Background technique [0002] The approach-type cemented filling mining method is a filling mining method that applies roadway excavation technology to ore body recovery. It has the advantages of small exposed area, high safety, high recovery rate, and low dilution rate. Unstable ore bodies, so it is widely used in the mining of extremely soft broken ore bodies. Among them, the downward approach cemented filling mining method is the most commonly used. However, in practical applications, due to the characteristics of the road mining method, the production capacity of a single working face is limited, and it is not conducive to the improvement of the degree of mechanization, and the mining efficiency is low, which leads to the high cost of mining per ton of ore. Therefore, it is necessary to impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/22E21F15/00
CPCE21C41/22E21F15/00
Inventor 刘东锐李向东李强王玉丁李士超盛佳张海云李永辉曹毅恒
Owner CHINA MINMETALS CHANGSHA MINING RES INST
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