A Open-pit Mining Technology with Beam in Narrow Mining Area

Abstract

The invention relates to a beam-reserving open pit mining technology in a narrow mining area. The beam-reserving open pit mining technology comprises the following steps that a, mining areas are divided, an open-pit mining right realm is divided into the multiple long-strip-shaped mining areas, the position of a mining pit is divided in each mining area, and soil beams are reserved between every two adjacent mining pits as well as between the mining pits and the mining right realm; b, excavation equipment is used to conduct mining on the first batch of mining areas, and mining is conducted according to the preset positions of the mining pits; c, mining is conducted on coal, mined from the first batch of mining areas, under the soil beams on the peripheries of the mining pits by using a slope coal cutter; and d, mining is conducted on the second batch of mining areas, mining is conducted according to the preset positions of the mining pits, and the mining pits are subjected to downwardmining through a spiral linear adit mode. The mining method is suitable for all open-pit mines, revolutionary changes can be generated on open-pit mining, and the mining technology further greatly reduces the open-pit mining cost while improving the adaptability of open-pit coal mine mining.

Description

technical field

[0001] The invention relates to an open-pit mining technique, in particular to an open-pit mining technique with beams in a narrow mining area. Background technique

[0002] Open-pit mining, also known as open-pit mining, is a process of removing the covering on the ore body, obtaining the required minerals, and extracting useful minerals from the open-surface mining field. Surface mining operations mainly include processes such as perforation, blasting, mining, transportation, and soil discharge. According to the continuity of the operation, it can be divided into intermittent, continuous and semi-continuous. Compared with underground mining, open-pit mining has the advantages of full resource utilization, high recovery rate, low dilution rate, suitable for large-scale machinery construction, fast mine construction, large output, high labor productivity, low cost, good working conditions, and safe production.

[0003] The traditional open-pit mining proces...

Examples

Embodiment Construction

[0021] An open-pit mining technique with beams in a narrow mining area, comprising the following steps.

[0022] The division of the mining area divides the open-pit mining right boundary into a plurality of strip-shaped mining areas, generally will be divided into more than a dozen mining areas, like the open-pit mine of the example of the present invention, the ore field area is only 2.65km 2 For open-pit mines, normal open-pit mining can only be divided into one mining area, but after adopting the narrow mining area beam open-pit mining technology, it must be divided into 10 mining areas. Considering the limitation of transportation equipment, the length of each mining area is set between 465-920 meters, and the width is set between 335-435 meters. Then divide the scope of the mining pit in each mining area, the scope of the mining pit is smaller than the scope of the mining area, so that there are soil beams between the mining pits, and between the mining pits and the bord...

technical field

[0001] The invention relates to an open-pit mining technique, in particular to an open-pit mining technique with beams in a narrow mining area. Background technique

[0002] Open-pit mining, also known as open-pit mining, is a process of removing the covering on the ore body, obtaining the required minerals, and extracting useful minerals from the open-surface mining field. Surface mining operations mainly include processes such as perforation, blasting, mining, transportation, and soil discharge. According to the continuity of the operation, it can be divided into intermittent, continuous and semi-continuous. Compared with underground mining, open-pit mining has the advantages of full resource utilization, high recovery rate, low dilution rate, suitable for large-scale machinery construction, fast mine construction, large output, high labor productivity, low cost, good working conditions, and safe production.

[0003] The traditional open-pit mining proces...

Examples

Embodiment Construction

[0021] An open-pit mining technique with beams in a narrow mining area, comprising the following steps.

[0022] The division of the mining area divides the open-pit mining right boundary into a plurality of strip-shaped mining areas, generally will be divided into more than a dozen mining areas, like the open-pit mine of the example of the present invention, the ore field area is only 2.65km 2 For open-pit mines, normal open-pit mining can only be divided into one mining area, but after adopting the narrow mining area beam open-pit mining technology, it must be divided into 10 mining areas. Considering the limitation of transportation equipment, the length of each mining area is set between 465-920 meters, and the width is set between 335-435 meters. Then divide the scope of the mining pit in each mining area, the scope of the mining pit is smaller than the scope of the mining area, so that there are soil beams between the mining pits, and between the mining pits and the bord...

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