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Electric rake-explosive force coordinated handling pseudo-inclined room-and-pillar mining method

A mining method and electric rake technology, which is applied in the field of electric rake-explosive force coordinated handling pseudo-inclined room-and-pillar mining method, which can solve the problem of difficult ore mining, high equipment requirements, and inclined thin ore bodies that cannot slip by themselves due to ore. problems, to achieve the effect of reducing the amount of excavation, expanding the scope of application, and improving the ore recovery rate

Active Publication Date: 2019-02-15
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: the inclined thin ore body cannot self-slip and has high requirements for equipment, resulting in the ore body becoming a difficult-to-mining ore body

Method used

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  • Electric rake-explosive force coordinated handling pseudo-inclined room-and-pillar mining method
  • Electric rake-explosive force coordinated handling pseudo-inclined room-and-pillar mining method
  • Electric rake-explosive force coordinated handling pseudo-inclined room-and-pillar mining method

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Embodiment 1

[0035] refer to figure 1 , the present embodiment carries out back mining aiming at the moderately stable ore body of the ore body roof, comprising the following steps:

[0036] (1) Divide the inclined thin ore body into stages. In the stage, the mining area is divided along the strike, with a length of 80m. Interval columns are reserved in the mining area. The ore blocks are arranged in the mining area. 90m in length, 15m in strike length, and 1-3m in height. The ore block is divided into ore rooms and ore pillars. The ore pillars are reserved for strip-shaped ore pillars 11 with a width of 5-7m, and the ore block is the basic mining unit;

[0037] (2) Since the specification is 2.5×2.5m 2 Stage 3 excavation of transport roadway 2×2m 2 Pedestrian patio 1, excavated 2×2m to the side of each mine 2 ore-drawing chute 2; excavate 2×2m from the pedestrian patio 1 at the lower boundary of the mine 2 The cutting level entry 8, which is also called the bottom entryway, is not onl...

Embodiment 2

[0042] refer to figure 2 , this embodiment carries out back mining for the ore body that ore body roof is solid, comprises the following steps:

[0043](1) Divide the inclined thin ore body into stages, and divide the mining area along the strike in the stage, with a length of 100m. Space columns are reserved in the mining area, and the ore blocks are arranged in the mining area. 100m in length, 25m in strike length, and 1 to 3m in height. The ore block is divided into ore rooms and ore pillars. The ore pillars are reserved for strip-shaped ore pillars 11 with a width of 3 to 5m, and the ore block is the basic mining unit;

[0044] (2) Since the specification is 2.5×2.5m 2 Stage 3 excavation of transport roadway 2×2m 2 Pedestrian patio 1, excavated 2×2m to the side of each mine 2 ore-drawing chute 2; excavate 2×2m from the pedestrian patio 1 at the lower boundary of the mine 2 The cutting headway 8 is not only used as the free surface of the initial mining, but also as th...

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Abstract

An electric rake-blasting force cooperative carrying false-inclined room-and-pillar method comprises the following steps that an inclined thin ore body which is stabilized through ore rocks or stabilized moderately is divided into stages, an ore horizontal line is arranged at the bottoms of the stages, ore blocks are arranged in the stages, the long axes of the ore blocks are arranged obliquely, and the ore blocks are divided into ore chambers and ore pillars; a gateway is tunneled and cut in the bottoms of the ore chambers, an upward slope is tunneled on one side of each ore chamber, and an air return roadway is tunneled on the tops of the ore chambers, so that stope units are formed; an electric rake chamber and an extraction chute are arranged in a basal pillar; short-hole drilling is adopted, and according to the differences of the blasting mode and the carrying mode, the ore chambers are divided into the upper part and the lower part for back production; the ore rocks fallen from the lower part of the ore chambers are carried with an electric rake; and the ore rocks fallen from the upper part of the ore chambers are carried in a blasting force- electric rake cooperative carrying mode. Finally, the fallen ore rocks pass through an ore discharging structure at the bottom to an ore discharging horizontal line, and after back production of the ore chambers is finished, goaf is treated. According to the method, advantages of the room-and-pillar method and the blasting mining method are utilized sufficiently, and the application range of the room-and-pillar method is enlarged.

Description

technical field [0001] The invention relates to a mining method for underground mining of metal ore deposits, in particular to a pseudo-inclined room-and-pillar mining method for electric rake-explosive force cooperative transportation. It is suitable for mining ore bodies with a dip angle of 30°-55° and a thickness of 1-3m, with stable or moderately stable inclined thin ore bodies. Background technique [0002] The mining of inclined thin ore bodies has always been a difficult point in the design of mining methods, and there is no good mining method in China for reference. When mining this type of ore body, the caving ore cannot be completely discharged at the bottom by its own weight, and there have always been problems such as difficult ore drawing, low recovery rate, and large dilution loss. [0003] The comprehensive ore retention mining method is a mining method with strong adaptability and flexibility. It not only retains the characteristics of the retained ore mini...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/22
CPCE21C41/22
Inventor 陈庆发刘俊广黎永杰李世轩牛文静钟毓
Owner GUANGXI UNIV
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