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Deep hole caving backfilling stoping method for artificially freezing stope roof

A filling mining method and artificial freezing technology, which is applied in ground mining, underground mining, special mining, etc., can solve the problems of restricting the use of high-efficiency mining methods, affecting the production capacity of ore blocks, and high mining and filling costs, so as to reduce mining costs , Large production capacity, the effect of increasing production capacity

Active Publication Date: 2013-02-13
CENT SOUTH UNIV
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Problems solved by technology

There are disadvantages such as complex process, low operating efficiency, low production capacity of ore blocks, and high mining and filling costs, which affect the production capacity of the entire ore block and restrict the use of high-efficiency mining methods

Method used

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  • Deep hole caving backfilling stoping method for artificially freezing stope roof
  • Deep hole caving backfilling stoping method for artificially freezing stope roof

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing.

[0014] For the extremely unstable stope roof of the soft broken ore body with developed joints, fissures and water-conducting structures, the artificial freezing method is used to freeze the extremely unstable stope roof into a stable frozen body, and then use a large-scale method under the stable frozen roof. The mining process of large-diameter and deep hole collapse and subsequent filling, medium and deep hole collapse, filling the goaf at one time after the mining is completed, and finally thawing the frozen body.

[0015] see figure 1 and figure 2 , the vein-piercing roadway 6 is connected to the transport roadway 1 in the middle section, and within the stope boundary line 10, according to the structure size of the stope, first determine the technical requirements such as the freezing range and the strength of the frozen body, and carry out the freezing parameter des...

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Abstract

The invention discloses a deep hole caving backfilling stoping method for artificially freezing the stope roof. The method comprises the following steps that: by the artificial freezing method, the stope roof which is extremely unstable is frozen into a stable freezing body, which creates conditions for personnel and equipment entering the stope; and by the big-diameter deep hole caving backfilling stoping process, the medium and deep hole caving is applied, the goaf is filled once after stoping is finished, and the freezing body is unfrozen, so that the aim of safely and highly efficiently mining ore mass with extremely unstable roof is achieved. The method is specially applied to stoping of underground metal mines which are highly difficult to mine and of which the roof has rock gaps and a developed water flowing structure and is loose, soft, fragile and extremely unstable, and has the characteristics of safety in operation, high production efficiency, high capacity of producing ore blocks and low mining cost.

Description

technical field [0001] The invention relates to a mining method of deep hole avalanche followed by filling, in particular to a mining method of deep hole avalanche followed by filling on the roof of artificially frozen stope of an underground mine. Background technique [0002] Soft and broken metal ore deposits have always been regarded as a complex and difficult-to-mining ore body. Due to the development of joints, fissures and water-conducting structures in the ore body, the overall stability of the ore rock is poor, the allowable exposure area is small, and the roof of the stope is easy to fall. Equipment cannot enter the stope to operate, and it is difficult to adopt efficient mining methods. In view of the characteristics of this type of ore body, in the traditional technology, the downward approach filling mining method is often used for mining. The ore body is divided into multiple layers and multiple access routes, and then artificial false roofs are constructed as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16
Inventor 周科平李杰林邓红卫高峰杨念哥
Owner CENT SOUTH UNIV
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