Mining method for steep-dip thin ore body

A mining method and technology for thin ore bodies, which are applied in the mining field of steeply inclined thin ore bodies, can solve the problems of poor operation safety, low production capacity, and large ground pressure activities.

Inactive Publication Date: 2020-07-28
CHANGCHUN GOLD RES INST
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Steeply inclined thin ore bodies generally refer to ore bodies with an inclination angle of not less than 50° and a thickness of not more than 4m. According to the experience of mining similar ore bodies at home and abroad, the main mining methods currently used are shallow hole retention method, wall cutting and filling method and segmented The open-field method, in which the shallow hole ore retention method is suitable for ore bodies with moderate stability and no cohesion, has problems such as high ore dilution rate, large loss rate, poor operation safety, and backlog of funds during the application process; wall-cutting and filling method It is suitable for ore bodies with a thickness of no more than 1.2m. In the application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mining method for steep-dip thin ore body
  • Mining method for steep-dip thin ore body
  • Mining method for steep-dip thin ore body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Include the following steps:

[0024] In the first step, the ore body 7 is divided into ore blocks, the length of the ore block is 40m, and the height is 20m. Only a small amount of intercolumns 13 are left in the ore block, and the interior of the ore block is segmented, and each section has a height of 6m, 7m, and 7m;

[0025] In the second step, at the two ends of the ore block, the vertical ore body strike direction of the transport roadway 1 outside the vein is excavated into the vein-piercing roadway 3; Segmental rock drilling roadway 6; after the segmental rock drilling roadway excavation is completed, excavate the central advanced patio 4;

[0026] In the third step, the ore mining sequence is from top to bottom, with the central advanced patio 4 as the free surface, and mining from the center to both ends; , the ore 11 that has collapsed during blasting is raked to the corresponding chute part 501 by electric rake 12, and released from the ore-drawing funnel o...

Embodiment 2

[0036] Include the following steps:

[0037] In the first step, the ore body 7 is divided into ore blocks, the length of the ore block is 70m, and the height is 80m. Only a small amount of intercolumns 13 are left in the ore block, and the interior of the ore block is segmented, and each section has a height of 8m;

[0038] In the second step, at the two ends of the ore block, the vertical ore body strike direction of the transport roadway 1 outside the vein is excavated into the vein-piercing roadway 3; Segmental rock drilling roadway 6; after the segmental rock drilling roadway excavation is completed, excavate the central advanced patio 4;

[0039] In the third step, the ore mining sequence is from top to bottom, with the central advanced patio 4 as the free surface, and mining from the center to both ends; , the ore 11 that has collapsed during blasting is raked to the corresponding chute part 501 by electric rake 12, and released from the ore-drawing funnel of the chute;...

Embodiment 3

[0049] Include the following steps:

[0050] In the first step, the ore body 7 is divided into ore blocks, the length of the ore block is 100m, and the height is 100m. Only a small amount of intercolumns 13 are left in the ore block, and the interior of the ore block is segmented, and each section has a height of 10m;

[0051]In the second step, at the two ends of the ore block, the vertical ore body strike direction of the transport roadway 1 outside the vein is excavated into the vein-piercing roadway 3; Segmental rock drilling roadway 6; after the segmental rock drilling roadway excavation is completed, excavate the central advanced patio 4;

[0052] In the third step, the ore mining sequence is from top to bottom, with the central advanced patio 4 as the free surface, and mining from the center to both ends; , the ore 11 that has collapsed during blasting is raked to the corresponding chute part 501 by electric rake 12, and released from the ore-drawing funnel of the chut...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Heightaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a mining method for a steep-drip thin ore body, which belongs to the technical field of mine underground mining. The mining method comprises the following steps: dividing theore body into ore blocks, and tunneling a vein-penetrating roadway in a direction perpendicular to the ore body from an outside-vein transportation roadway at the two ends of each ore block; tunnelinga pedestrian mine slide open yard at a vein of the vein-penetrating roadway, and simultaneously tunneling an in-vein scraper chamber and a sub-section drilling roadway; after tunneling of the sub-section drilling roadway is accomplished, tunneling a center advanced open yard; and recovering the ore blocks from top to bottom, and recovering the next sub section after the last sub section recoveryis ended by adopting a sub-section ore removal way for ore removal. The mining method has the advantage of sub-section ore removal, reduces operation time of each sub section at a working site, effectively controls mixing of surrounding rocks, reduces a rate of dilution, constructs a concrete cushion layer every 1-2 sub sections, can effectively control geopressure show at the working site, improves stability of the working site, reduces the rate of dilution of the ores, improves production efficiency of the working site, and guarantees safety of production operation.

Description

technical field [0001] The invention relates to the technical field of underground mine mining, in particular to a mining method suitable for steeply inclined thin ore bodies. Background technique [0002] Steeply inclined thin ore bodies generally refer to ore bodies with an inclination angle of not less than 50° and a thickness of not more than 4m. According to the experience of mining similar ore bodies at home and abroad, the main mining methods currently used are shallow hole retention method, wall cutting and filling method and segmented The open-field method, in which the shallow hole ore retention method is suitable for ore bodies with moderate stability and no cohesion, has problems such as high ore dilution rate, large loss rate, poor operation safety, and backlog of funds during the application process; wall-cutting and filling method It is suitable for ore bodies with a thickness of no more than 1.2m. In the application process, there are problems such as small p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21C41/16
CPCE21C41/16
Inventor 侯俊唐学义张小瑞程文文闵忠鹏严鹏
Owner CHANGCHUN GOLD RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap