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Central outside-vein house pillar type combined crosscut two-end inside-vein continuous segment filling mining method

A backfill mining method and room-and-pillar technology, which is applied in the fields of backfill, ground mining, mining equipment, etc., can solve the problems of resource waste, high ore loss and dilution rate, mountain caving, etc., and achieves high degree of mechanization and low labor intensity. Effect

Inactive Publication Date: 2013-03-06
彭康
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the mining of underground phosphorus resources in my country has been using the traditional open field method and caving method. Not only the ore loss and dilution rate is high, the waste of resources is extremely serious, but also lead to major engineering disasters such as mountain avalanche and goaf collapse within the mining boundary.

Method used

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  • Central outside-vein house pillar type combined crosscut two-end inside-vein continuous segment filling mining method
  • Central outside-vein house pillar type combined crosscut two-end inside-vein continuous segment filling mining method
  • Central outside-vein house pillar type combined crosscut two-end inside-vein continuous segment filling mining method

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Embodiment Construction

[0026] Example Take a stope of the Shaba mine used by Guizhou Kailin Group Mining Corporation as an example.

[0027] The current mining range of Yongshaba Mine is +920~+1120m. The thickness of the ore bed is relatively stable in the strike direction, and the strike length is nearly 3800m; the average true thickness of the ore body is 6.5m, and the average dip angle is 32°; the average ore grade is 35.66% and the bulk density is 2.78 t / m 3 , Phosphate ore reserves A+B+C+D grade 27.232 million tons. The boundary between the ore layer and the surrounding rock of the roof and floor is clear. The direct roof is an unstable layer produced by carbonate and silicate rocks, the indirect roof is dolomite, and the direct floor of the ore layer is quartz sandstone or red shale. The specific implementation steps are as follows:

[0028] 1. Divide the ore body into panels along the strike, the panel length is 800m, the vertical height is 50m, and the subsection vertical height is 10m; the cent...

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Abstract

The invention discloses a central outside-vein house pillar type combined crosscut two-end inside-vein continuous segment filling mining method for medium-thickness inclined crushed phosphorus ores. The method comprises the following steps: dividing an ore into middle segments, dividing each of the middle segments into panels, dividing each of the panels into segments, dividing the center of each of the segments into ore houses and ore pillars, and dividing two ends of each of the segment along an inside-vein drilling ore-removal level non-pillar into recovery units; adopting a hanging side outside-vein trackless mining system which is formed by a panel ramp, a concentrated ore-removal ore-pass, segment levels at the central outside-vein and shifting to inside-vein at two sides, and an connection lane commonly used by the ore houses and the ore pillars; recovering the ore houses in the middle segments, filling close to back, and recovering the ore pillars; and carrying out parallel operations of technologies comprising drilling, exploding, supporting, ore removal, filling and the like of a plurality of the ore houses to realize continuous mining. The method disclosed in the invention has the substantial characteristics of improvement of the recovery safety and the panel productivity, reduction of the resource dilution rate and the mining-cutting ratio, increase of enterprise benefits and the like.

Description

Technical field [0001] The invention relates to a medium-thickness inclined broken phosphorous ore body, a central vein-outside room-pillar type combined horizontal roadway continuous segmented filling mining method at both ends of the vein, which is mainly suitable for long ore body trend, relatively regular ore body, and uneven ore rock It is too stable and requires large production capacity and high efficiency for the mining of medium-thick inclined broken phosphate ore bodies, and it is also suitable for similar ore bodies mined by filling method outside the phosphate ore. technical background [0002] The type of phosphate ore in my country belongs to the Sinian marine sedimentary deposits. This group of phosphorus-bearing strata is mainly composed of dolomite, phosphate rock, clay rock and transitional rocks between them. Most of the industrial ore beds are gently inclined to inclined medium-thick broken ore bodies, which are layered and similar to layered, with long strike...

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Application Information

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IPC IPC(8): E21C41/22E21F15/00
Inventor 彭康李夕兵姚金蕊赵国彦
Owner 彭康
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