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Mining method for multilayer fragile gently-inclined extra-narrow ore vein

A mining method and gently inclined technology, which is applied in ground mining, earth square drilling, underground mining, etc., can solve the problems of unresolved rock inclusions and ore piles, so as to ensure the stability of empty areas, reduce stacking, and improve operating efficiency. Effect

Active Publication Date: 2015-01-07
河南发恩德矿业有限公司
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  • Abstract
  • Description
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Problems solved by technology

However, the article does not solve the problem of how to avoid interlayered ore veins from being mixed into the ore pile when mining extremely thin veins

Method used

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  • Mining method for multilayer fragile gently-inclined extra-narrow ore vein
  • Mining method for multilayer fragile gently-inclined extra-narrow ore vein
  • Mining method for multilayer fragile gently-inclined extra-narrow ore vein

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Embodiment Construction

[0027] In order to further describe the present invention, a kind of mining method of multi-layer friable gently inclined extremely thin vein of the present invention will be described in further detail below in conjunction with accompanying drawing.

[0028] Depend on figure 1 The panel schematic diagram of the division of the mining method of a kind of multi-layer friable gently inclined extremely thin vein of the present invention is shown and combined with figure 2 , image 3 , Figure 4 It can be seen that the panel area is divided along the ore body trend, the panel area is 60m long, and the panel interval column 5 is reserved in the panel interval, and the uphill 1 is arranged in the panel interval column 5, and a roadway 8 along the vein is arranged every 30m in the direction of the inclination. Column 5 is 7m wide, panel bottom column 6 is 3m wide, and panel top column 7 is 3m wide; at the end of the mine house, excavate along the trend and inclination respectively...

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Abstract

The invention discloses a mining method for a multilayer fragile gently-inclined extra-narrow ore vein. According to the method, mining areas are divided along the ore body trend; mining area columns (5) are reserved among the mining areas; a mine slope (1) is arranged in each mining area column (5); one vein following combined roadway is arranged in the inclination direction every 20m to 40m; vein following cutting roadways (2) and cutting mine slopes (3) are excavated at the end part of a chamber in the trend direction and the inclination direction; and a first layered ore vein, a rock sandwich layer and a second layered ore vein are totally excavated in one step along the vein following cutting roadways (2) and the cutting mine slopes (3). In the backstopping process, different drilling and blasting parameters are adopted at the first layered ore vein, the rock sandwich layer and the second layered ore vein, rocks among the ore veins can be removed; the problem of ore mixing into the rocks is solved; and the ore dilution is reduced. The method provided by the invention is particularly applicable to the mining of the underground metal mine multilayer fragile gently-inclined extra-narrow ore vein and the ore vein easy to crush due to blasting disturbance; the simultaneous recovery of the multilayer ore vein is realized; and the problem of personnel operation and equipment operation space limitation is solved through full thickness mining.

Description

technical field [0001] The present invention relates to an underground mine mining method, in particular to a mining method for multi-layered gently inclined ultra-thin veins in underground metal mines containing rock interlayers, especially suitable for underground metal mines with multi-layered gently inclined ultra-thin veins and subjected to blasting Disturb mining of breakable veins. Background technique [0002] Due to the complex geological conditions of the ore rocks, the multi-layer gently inclined and extremely thin veins have always been difficult to mine. Large size and low efficiency; interlayer rocks cannot be removed in advance, resulting in a high rate of waste rock mixing in the mined ore, increasing the cost of ore and waste rock separation and beneficiation in the later stage. [0003] In order to prevent the interlayered ore veins from being mixed into the ore heap and reduce the ore dilution rate, some mines adopt the method of "mining thick and discard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/22
CPCE21C41/22
Inventor 王运敏孙丽军杨家冕肖益盖
Owner 河南发恩德矿业有限公司
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