Segmented mining method

A mining method and ore block technology, which is applied in special mining, earth square drilling, open-pit mining, etc., can solve problems such as low air pressure, low oxygen content in the air, and reduced efficiency of personnel and equipment, so as to achieve high-efficiency mining and mining. The effect of improving efficiency

Active Publication Date: 2012-10-24
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Description
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Problems solved by technology

[0005] Under high altitude conditions such as low air pressure, low air oxygen content, large temperature difference, severe cold in winter and other harsh enviro

Method used

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Examples

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Effect test

Embodiment 1

[0069] A very large copper polymetallic mine with an altitude of 4500m. The ore body occurs in skarn, the roof is hornfels, slates and dikes, and the floor is carbonate rock. The integrity of the rock is good, and the joints and fissures are not developed. The ore body is in the shape of a thick plate, with a thickness of 25-60m, and some are extremely thick and large ore bodies. The dip angle of the ore body changes greatly. The upper part with a dip angle greater than 50° is a steeply inclined ore body, and the lower part is a nearly horizontal and gently inclined ore body. The mining area is dominated by gently inclined ore bodies. The altitude of the mining area is high, the air is thin, and the mining operation environment is poor. Subsidence and large deformation are not allowed on the ground surface. It is mined by the method of cluster hole high-section open-field and then-fill mining, with a stage height of 60m and a section height of 20m. The ore block is 100m lo...

Embodiment 2

[0072] A copper polymetallic mine with an altitude of 3900m. The ore deposit is a volcanic exhalation deposit, and the ore-bearing belt is mainly a set of rhyolitic pyroclastic rocks. The main ore body runs north-south and dips east. Dip 80 0 about. The strike length is 200-960m. The average thickness is 22.5m. The ore body is lens-shaped. The ore body and surrounding rock are stable. The altitude of the mining area is high, the air is thin, and the mining operation environment is poor. Subsidence and large deformation are not allowed on the ground surface. The mine is mined by the method of cluster hole high-section open-field and then-fill mining, with a stage height of 50m and a section height of 15m. The ore block is 80m long and 30m wide, the mine room in the ore block is 60m long, the mine room is 15m wide, the column width is 15m, and the panel column width is 20m. During mining, the mining room and the empty area of ​​the mining room are cemented and filled fi...

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Abstract

The invention discloses a segmented mining method which comprises the following steps: (1) segmenting an ore body into a panel and middle segments, dividing the panel into ore blocks, dividing the ore blocks into rooms and space pillars, dividing the ore body into middle segments along a height direction of the ore body and dividing each middle segment into sections, wherein the height of the middle segments is 50 to 60 m, the height of the sections is 14 to 20 m, the length and the width of the ore blocks are 80 to 100 m and 30 to 60 m respectively, the length and the width of the rooms in the ore blocks are 60 to 80 m and 15 to 30 m respectively, and the width of the ore pillar is 15 to 30 m; (2) stoping the units of the rooms: a step of stoping by using a segmented open-stope method and ore drawing by using a manner of bundle-hole combined funnel blasting; (3) cementing and filling mined rooms; (4) stoping the units of the space pillars, wherein stoping of a unit of the space pillars is carried out after stoping, cementing and filling of adjacent units of the rooms at two sides of the unit of the space pillars is finished; and (5) filling mined space pillars with water and sediment. The mining method can be used for large scale high efficiency mining of plateau ores.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a section mining method. Background technique [0002] From the perspective of the development trend of the world's mining industry, large-scale and efficient mining has become an inevitable choice for the mining industry. The traditional mining method of underground mines usually divides the ore body into ore rooms and ore pillars, and first returns to the mine room. After the mine back mining is completed, an underground space is formed, which is filled with tailings or waste rock and cement to maintain the ore rock. Stable, and return to the mining pillar after the mine room is filled. [0003] Plateau mining (more than 4000m above sea level) mines are mostly located in Peru, Bolivia and other countries in South America, such as the Pallca mine in Peru, with an altitude of 3800-5000m, and the Antamina copper-zinc mine, with an altitude of 4200m. The mines that have been put i...

Claims

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Application Information

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IPC IPC(8): E21C47/00
Inventor 陈何王湖鑫原野秦秀山孙忠铭
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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