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Open pit coal mine dumping method

An open-pit coal mine and soil dumping technology, which is applied in open-pit mine mining, earth square drilling, special mining, etc., can solve the problem of low efficiency of soil dumping

Inactive Publication Date: 2018-11-23
CHINA SHENHUA ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when dumping soil, trucks need to turn around and dump after passing through the ramp to the dump site, resulting in an increase in transportation distance of at least 375 meters and low dumping efficiency

Method used

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  • Open pit coal mine dumping method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] figure 1 Shows the flow chart of the open-pit coal mine dumping method of the embodiment of the present invention, figure 2 A schematic diagram of the location of the solid square end-side ramp is shown. Such as figure 1 and 2 As shown, the open-pit coal mine dumping method that the embodiment of the present invention provides, it comprises:

[0022] S110, step down the Duanbang Road step by step;

[0023] Duanbang Road 4 and dump site 1 are at the same level. One end of Duanbang Road 4 is connected to dump site 1, and the other end is gradually descended to connect with coal mining site 2.

[0024] Duanbang Road 4 is gradually degraded to form a first-level Duanbang Road, a second-level Duanbang Road...N-level Duanbang Road, where N≥2. The height of the N-level end side road is consistent with the height of the coal mining field.

[0025] S120, along the direction of the descending section, build a ramp on Duanbang Road;

[0026] Secondary end-side ramps can b...

Embodiment 2

[0037] On the basis of the first embodiment above, optionally, as image 3 As shown, S110, gradually descending the end-side road, specifically including:

[0038] S1101, laying blasting lines on Duanbang Road;

[0039] The blasting line can be arranged along the length direction of the end side road 4, and can also be arranged along the width direction of the end side road 4.

[0040] S1102, drilling a plurality of blast holes on the blast line;

[0041] A plurality of blast holes can be evenly arranged along the blast line to facilitate the arrangement of blast holes. In this embodiment, the distance between adjacent blast holes is about 6 meters.

[0042] S1103, installing explosives at the bottom of the plurality of blast holes;

[0043] Bury explosives at the bottom of each blast hole.

[0044] S1104, detonate the explosives, and gradually descend the section of the end-side road.

[0045] Carry out loosening blasting on the end side road 4, and change the solid end...

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Abstract

The embodiment of the invention discloses an open pit coal mine dumping method which comprises the following steps of performing gradual segment descending on an end slope road; building an end sloperamp on the end slope road in a segment descending direction; and conveying overburden of a coal mining yard to a dumping site from the end slope ramp. By utilizing the open pit coal mine dumping method provided by the embodiment of the invention, a solid yardage end slope ramp can be utilized for directly discarding rocks and soils after explosion of the coal mining yard to the dumping site without discarding back, so that a transportation distance is saved, and the dumping cost is lowered; the arrangement time of the end slope road at the lower part of the solid yardage end slope ramp can bedelayed, and end slope coals are mined as much as possible within a design range, so that the overburden quantity at an end slope is reduced, building of a slope ramp of the coal mining yard can be avoided, the dumping space of the dumping site is released, the forward movement speed of the dumping site, the moving frequency of the solid yardage end slope ramp and the dumping cost are lowered; and meanwhile, the position of a slope ramp does not need to be reserved at the dumping site, so that neat slope of the dumping site can be ensured, and the cleanness of the dumping site is improved.

Description

technical field [0001] The invention relates to the technical field of coal mines, in particular to an open-pit coal mine dumping method. Background technique [0002] Open-pit coal mines loosen the rocks in the coal mining area by blasting, and then transport the loose rocks to the dump for disposal. Since the rock changes from a solid cube to a loose cube after blasting, it cannot be discharged at the same level. Therefore, the overall discharge level of the dump site must be higher than the stripping level of the coal mining site. [0003] Taking a coal mine as an example, the 1025 horizontal stripping material of the coal mining field enters the dump site for disposal through the 1025 end side road. Due to the insufficient capacity of the 1025 dump site, most of the discharged volume can only be discharged to the 1055 level. When dumping at 1055 level, it is necessary to build a ramp about 375 meters long from 1025 in the coal mining area to 1055 level, and as the dump ...

Claims

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Application Information

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IPC IPC(8): E21C47/02
CPCE21C47/02
Inventor 刘月亭杨洋杨文亮
Owner CHINA SHENHUA ENERGY CO LTD
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