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A kind of surface coal mining technology

An open-pit coal mine and process technology, applied in surface mining, earthwork drilling, underground mining, etc., can solve problems such as affecting work efficiency, blasting and brushing, reducing coal mining output, etc., so as to improve work efficiency, improve efficiency, reduce The effect of secondary dumping volume

Active Publication Date: 2015-09-30
CHINA SHENHUA ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

[0024] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] 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 2-4 , the operation steps are as follows: Excavate the upper loess layer 1 with a bucket wheel excavator, transport the excavated loess to the conveyor belt of the belt conveyor, and then discharge the loess on the conveyor belt to the dump site through the soil dumper Inside; the middle rock layer 2 is blasted by loosening blasting, and then the blasted rock 2 is transported to the dump site 6 by a single-bucket truck until the lower rock layer 3 is exposed; the lower rock layer 3 is exposed by throwing blasting. The rock layer 3 is blasted, and the lower ro...

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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, and adopting a dumping plough to dump the loess on a conveying belt into a dump; 2, adopting a loosening blasting method to blast a rock layer on the upper portion, and then adopting a single bucket truck to convey rocks to the dump until a rock layer on the lower portion is exposed; 3, adopting a casting-blasting method to blast the rock layer on the lower portion, adopting a bulldozer to form a combination extension platform, and adopting match of the single bucket truck and a dragline to directly dump the blasting amount into the dump on the combination extension platform until a coal layer is exposed; and 4, adopting the loosening blasting method to blast the coal layer with a thickness of 30 m in one time, carrying out tracking type mining along a dragline work line direction in two coal mining benches, adopting the single bucket truck to convey the mined coal 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 scheme of the present invention provides a mining process for open-pit coal mines. The open-pit coal mine includes an upper loess layer, a middle rock layer, a lower rock layer and a coal seam below the lower rock layer. The bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/26
Inventor 王平亮翟正江王桂林刘海健周永利
Owner CHINA SHENHUA ENERGY CO LTD
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