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A kind of surface coal mining technology

A technology of open-pit coal mines and technology, which is applied in ground mining, earth square drilling, underground mining, etc. It can solve problems affecting work efficiency, blasting stacks, and reducing coal mining output, so as to improve efficiency and ensure continuity of coordination. Effect

Active Publication Date: 2015-11-18
CHINA SHENHUA ENERGY CO LTD +1
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  • Description
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Problems solved by technology

[0002] In the prior art, in the process of using the dragline in open-pit coal mining, due to its own characteristics, the dragline cannot completely brush the explosion volume of the blasting pile, and it will remain outside the blasting pile during work. A certain amount of explosion affects the work efficiency and reduces the output of coal mining

Method used

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  • A kind of surface coal mining technology
  • A kind of surface coal mining technology
  • A kind of surface coal mining technology

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Embodiment Construction

[0020] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] This embodiment provides a kind of open-pit coal mine mining technology, and this open-pit coal mine is as figure 1 Shown includes an upper loess layer 1, a middle rock layer 2, a lower rock layer 3, and a coal seam 4 below the lower rock layer 3, combined with Figure 2-3 , the operation steps are as follows: excavate the upper loess layer 1 with a bucket wheel excavator until it reaches the middle rock layer 2, put the excavated loess on the conveyor belt of the belt conveyor, and then put the excavated loess on the conveyor belt through the soil dumper. The loess is discharged into the outer dump; first, the gravel in the middle rock layer 2 is transported to the outer dump by a single-bucket truck (the gravel is the gravel in the middle rock layer), until the middle rock layer 2 After the formed pit has enough space (su...

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Abstract

The present invention provides an open pit coal mine mining process, which comprises the following operation steps: 1, adopting a bucket wheel excavator to dig a loess layer on the upper portion, placing the dug loess onto a conveying belt of a belt type conveyor, and discharging the loess to an outer dump; 2, adopting a single bucket truck to convey crushed stone in a rock layer on the middle portion to the outer dump, and adopting the single bucket truck to convey into an inner dump until a rock layer on the lower portion is exposed after a pit formed by the rock layer on the middle portion has a enough space; 3, adopting a casting-blasting method to blast the rock layer on the lower portion, adopting a bulldozer to flatten the top surface of the blasting stack to form a combination extension platform, adopting a dragline to inversely stack the blasting amount into the inner dump, directly discharging the blasting amount into the inner dump with matching with the single bucket until a coal layer is exposed; and 4, adopting the single bucket truck to convey coal in the coal layer to a crushing plant, and then conveying the crushed coal to a designated location with a belt conveyor.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to an open-pit coal mining process. Background technique [0002] In the prior art, in the process of using the dragline in open-pit coal mining, due to its own characteristics, the dragline cannot completely brush the explosion volume of the blasting pile, and it will remain outside the blasting pile during work. A certain amount of explosion affects the work efficiency and reduces the output of coal mining. Contents of the invention [0003] The object of the present invention is to overcome the defects in the prior art, and provide an open-pit coal mining process with high working efficiency and improved coal mining capacity. [0004] The technical solution of the present invention provides a mining process for open-pit coal mines. The open-pit coal mine comprises an upper loess layer, a middle rock layer, a lower rock layer and a coal seam below the lower rock layer. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/26
Inventor 王桂林周永利姚建华颜杰
Owner CHINA SHENHUA ENERGY CO LTD
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