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Open-pit refined mining method for gently dipping-thin ore body

A mining method and thin ore body technology, applied in the field of open-pit mining, can solve problems such as reducing the loss rate, and achieve the effects of increasing production costs, improving economic benefits, and improving mining efficiency

Active Publication Date: 2017-07-28
YUNNAN HUALIAN ZINC & INDIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The invention discloses an open-pit refined mining method with a gently inclined-thin ore body to solve the contradictory problems of reducing the loss rate and dilution rate and improving the production efficiency of large-scale shoveling equipment when the traditional mining method is mining a gently inclined-thin ore body. To ensure that users can economically and efficiently mine gently inclined-thin ore bodies

Method used

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  • Open-pit refined mining method for gently dipping-thin ore body
  • Open-pit refined mining method for gently dipping-thin ore body
  • Open-pit refined mining method for gently dipping-thin ore body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: A gentle dip-thin ore body is found in a mine in the south, and the mining steps are as follows:

[0044] (1) Exploration to determine the distribution range of the gently inclined-thin ore body (1);

[0045] (2) Make a plan for mining and stripping, determine the scope of mining, and start mining;

[0046] (3) Use the traditional open-pit mining stripping method to strip the waste soil in the steps without the gently inclined-thin ore body (1), and gradually lower the mining platform. When the mining platform falls to the platform where the gently inclined-thin ore body (1) is located , to calculate the width of the bench entity mining zone A=f(Rwf+Rxm)-c-h / tanα;

[0047] in:

[0048] f=0.85m;

[0049]Rwf=12.2m;

[0050] Rxm=13.7m;

[0051] c=2.5m;

[0052] h=15m;

[0053] α=60°;

[0054] Calculated by the formula, the width of the mining zone is A=11 meters, and the mining area is divided into 6 mining zones;

[0055] (4) Sequentially select two...

Embodiment 2

[0057] Example 2:. A gently inclined-thin ore body was found in a mine in the south. The mining steps are as follows:

[0058] (1) Exploration to determine the distribution range of the gently inclined-thin ore body (1);

[0059] (2) Make a plan for mining and stripping, determine the scope of mining, and start mining;

[0060] (3) Use the traditional open-pit mining stripping method to strip the waste soil in the steps without the gently inclined-thin ore body (1), and gradually lower the mining platform. When the mining platform falls to the platform where the gently inclined-thin ore body (1) is located , to calculate the width of the bench entity mining zone A=f(Rwf+Rxm)-c-h / tanα;

[0061] in:

[0062] f=0.85m;

[0063] Rwf=12.0m;

[0064] Rxm=12.4m;

[0065] c=2.5m;

[0066] h=10m;

[0067] α=60°;

[0068] Calculated by the formula, the width of the mining zone is A=12 meters, and the mining area is divided into 6 mining zones;

[0069] (4) Sequentially select t...

Embodiment 3

[0071] Embodiment 3: A gentle dip-thin ore body is found in a mine in the south, and the mining steps are as follows:

[0072] (1) Exploration to determine the distribution range of the gently inclined-thin ore body (1);

[0073] (2) Make a plan for mining and stripping, determine the scope of mining, and start mining;

[0074] (3) Use the traditional open-pit mining stripping method to strip the waste soil in the steps without the gently inclined-thin ore body (1), and gradually lower the mining platform. When the mining platform falls to the platform where the gently inclined-thin ore body (1) is located , to calculate the width of the bench entity mining zone A=f(Rwf+Rxm)-c-h / tanα;

[0075] in:

[0076] f=0.9m;

[0077] Rwf=13.1m;

[0078] Rxm=13.5m;

[0079] c=2.0m;

[0080] h=10m;

[0081] α=60°;

[0082] Calculated by the formula, the width of the mining zone is A=17 meters, and the mining area is divided into 4 mining zones;

[0083] (4) Sequentially select two...

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Abstract

The invention relates to the field of open-pit mining methods, in particular to an open-pit refined mining method for a gently dipping-thin ore body. The open-pit refined mining method comprises four steps of cut dividing, explosion arranging, hanging wall layered mine rock shovel mucking and heading wall sequential stripping advancing. The open-pit refined mining method solves the contradictory problem of loss ratio and dilution ratio reducing and large shovel mucking equipment production efficiency improving when a traditional mining method is used for stoping the gently dipping-thin ore body and ensures that a user can stope the gently dipping-thin ore body economically and efficiently.

Description

technical field [0001] The invention relates to the field of open-pit mining methods, in particular to an open-pit refined mining method. Background technique [0002] There is a kind of ore deposit controlled by fault structure in the mining area, and the endogenous mineral production is directly controlled by the fault. [0003] Under the complex primary strata, the structures are criss-crossed. These structures provide good ore liquid channels and storage space for the formation of ore deposits. Therefore, the ore bodies mainly occur in faults parallel to the strike of strata and formed by intersections with faults in other directions. In the broken space, there are magmatic hydrothermal fluid and intersecting orebodies of bed veins. Interlayer ore bodies are mostly formed in faults parallel to the strike of strata, and vein-shaped ore bodies are mainly formed at the intersection of main faults and faults in other directions. The occurrence of vein-like ore bodies at the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/26
CPCE21C41/26
Inventor 崔帮全曾继鹏赵云魁张全龙李德坤田楷
Owner YUNNAN HUALIAN ZINC & INDIUM
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