Multilayer gentle dip thin-medium ore deposit filling and mining method

A technology of backfill mining and gentle inclination, applied in the fields of backfill, ground mining, mining equipment, etc., can solve the problems of long construction period of mining and cutting engineering, complex production connection management, poor continuity of mining, etc., and reduce mining and cutting roadway excavation. The effect of increasing the production capacity of the mine and reducing the dilution rate

Active Publication Date: 2014-03-12
WUHAN UNIV OF SCI & TECH
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  • Application Information

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Problems solved by technology

However, the traditional filling method has low mining intensity and complex production connection management, resulting in a corresponding increase in mining costs
[0003] For multi-layer gently inclined thin-medium-thick ore deposits, it is generally mined layer by layer along the ore layer, and the applicable mining design is not carried out according to the characteristics of the multi-layer ore deposit. A large number of mining and cutting roadways are excavate

Method used

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  • Multilayer gentle dip thin-medium ore deposit filling and mining method
  • Multilayer gentle dip thin-medium ore deposit filling and mining method
  • Multilayer gentle dip thin-medium ore deposit filling and mining method

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Embodiment 1

[0033] The invention relates to a filling mining method for a multi-layer gently inclined thin-medium-thick ore deposit. The multi-layered ore bodies of this deposit are produced in layers or parallel layers, the ore body dip angle is 5~25°, the ore body length is generally 224~670m, the dip depth is 87~204m, and the ore layer thickness is generally 0.81~5.54 m, the thickness of interlayer stone layer is 5~12m. The rock stability of this deposit is relatively good, and the engineering geological conditions of the mining area are of simple-medium type.

[0034] The concrete steps of this ore deposit filling mining method are:

[0035] 1) Block division and mining and cutting engineering layout

[0036] ① Block division

[0037] Divide the deposit into stages such as figure 1 with figure 2 As shown, each layered ore body in the stage is divided into panels. Drill uphill 2 at the bottom of ore layer 1 along the orebody tendency, divide the orebodies on both sides into mine...

Embodiment 2

[0049] The invention relates to a filling mining method for a multi-layer gently inclined thin-medium-thick ore deposit. The ore deposit is a horizontal to gently inclined multi-layer thin deposit, with an orebody dip angle of 0~18°, a strike length of 620~1100m, and a dip extension of 460~856m. 6~10m, the ore rock stability of this deposit is moderate to good, and the engineering geological conditions of the mining area are of simple-medium type.

[0050] This ore deposit filling mining method is the same as embodiment 1.

[0051] Compared with the prior art, this specific embodiment has the following positive effects:

[0052] In this specific embodiment, each layered ore body is divided into panels, and the mine houses 15 and ore pillars 14 are arranged in a staggered manner, so that multiple panels and multiple stopes can be mined simultaneously. At the same time, the mining and filling of different stopes in the panel can work in parallel without interfering with each o...

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Abstract

The invention relates to a multilayer gentle dip thin-medium ore deposit filling and mining method. According to the technical scheme, the method comprises the following steps: dividing ore blocks, arranging mining and cutting projects, transporting, mining and filling. The step of dividing an ore deposit comprises the following sub-steps: dividing an ore body in the stage into a disc area, tunneling to uphill (2) at the bottom of an ore layer (1) along the inclined direction of the ore body, dividing the ore body on two sides into ore chambers (15) and ore columns (14) along the uphill (2), and reserving uphill ore columns (18) by taking the uphill (2) as the center. Three-step recovery is adopted in the disc area and comprises a first step of recovering the ore chambers (15), a second step of recovering the ore columns (14) and a third step of recovering the uphill ore columns (18); after the ore chambers (15) or the ore columns (14) are totally recovered, a goaf area (11) is downwards filled through the uphill (2) on the upper layer and via filling ventilation holes (10) communicated with a stope; finally, the uphill ore columns (18) are recovered within three steps from bottom to top along the uphill (2) by taking the disc area as a unit, and the uphill ore columns (18) in the next disc area are recovered after filling. The method has the characteristics of high mining intensity, high ore recovery rate, low ore dilution ratio and low mining cost.

Description

technical field [0001] The invention belongs to the technical field of filling and mining of thin-medium-thick ore deposits. In particular, it relates to a filling mining method for multi-layer gently inclined thin-medium-thick ore deposits. Background technique [0002] The mining of a large number of gently inclined thin-medium thick deposits mainly adopts the room-and-pillar method and the caving method. The outstanding disadvantage of the room-and-pillar method is that it is difficult to recover the ore pillars in time, the ore loss is relatively large, and the roof collapse induced by a large area of ​​empty space will pose a major safety hazard to subsequent production. The outstanding disadvantage of the caving method is that it will cause surface subsidence, which is not conducive to the protection of the surface environment. Therefore, people adopt the traditional filling mining method, that is, to mine the ore first, build a filling retaining wall at the edge of ...

Claims

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Application Information

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IPC IPC(8): E21C41/16E21F15/00
Inventor 叶义成姚囝王其虎刘艳章王文杰张红军柯丽华施耀斌鲁方
Owner WUHAN UNIV OF SCI & TECH
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