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A kind of filling mining method for multi-layer gently inclined thin-medium thick ore deposit

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 mine production capacity and reducing the dilution rate

Active Publication Date: 2015-09-02
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 excavated for each layer, and each layer operates independently , the connection between the layers is less, resulting in a large mining-cutting ratio, a long construction period of the mining-cutting project, and high mining costs
Some mines adopt the mining method of emptying and then filling. The filling operation and the mining process are interlaced and affect each other. The continuity of mining is poor, resulting in low mining intensity and low production capacity.

Method used

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  • A kind of filling mining method for multi-layer gently inclined thin-medium thick ore deposit
  • A kind of filling mining method for multi-layer gently inclined thin-medium thick ore deposit
  • A kind of filling mining method for multi-layer gently inclined thin-medium thick ore deposit

Examples

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Effect test

Embodiment 1

[0033] A filling mining method for multi-layer gently inclined thin-medium-thick ore deposits. The multi-layered ore bodies of this deposit are produced in layered or quasi-layered parallel, with an inclination angle of 5~25°, a length of 224~670m in general, a slope extension of 87~204m, and a thickness of ore layer in general 0.81~5.54 m, the thickness of the sandwich layer is 5-12m. The ore rock of the deposit has good stability, and the engineering geological conditions of the mining area are of simple-medium type.

[0034] The specific steps of the filling mining method of the deposit are:

[0035] 1) Ore block division and mining and cutting engineering layout

[0036] ① Division of ore blocks

[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. An uphill 2 is excavated at the bottom of the ore layer 1 along the inclination of the ore body, and the ore bodies on both sides are divided int...

Embodiment 2

[0049] A filling mining method for multi-layer gently inclined thin-medium-thick ore deposits. The deposit is a horizontal to gently inclined multi-layer thin deposit, with an inclination angle of 0-18°, a strike length of 620-1100m, a tendency to extend 460-856m, the thickness of the ore body is generally 2.3-3.4m, and the thickness of the interlayer is generally 6~10m, the rock stability of the deposit is medium to good, and the engineering geological conditions of the mining area are simple-medium types.

[0050] The filling mining method of the deposit is the same as that in Example 1.

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

[0052] In this specific embodiment, each layered ore body is divided into panels, and the ore house 15 and the ore pillar 14 are arranged in a staggered manner, and multiple panels and multiple stopes can be mined at the same time. At the same time, the stoping and filling of different stopes ...

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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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Patent Type & Authority Patents(China)
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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