Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Efficient ore removal method for gently inclined thin ore body

A thin ore body, gently inclined technology, applied in ground mining, mining equipment, earth-moving drilling and other directions, can solve the problems of inoperable equipment, increased climbing angle, low mining efficiency, etc., to achieve good practical application value, Improve mining output and overcome inefficiencies

Active Publication Date: 2022-07-29
CHINA MINMETALS CHANGSHA MINING RES INST
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the climbing ability of the rail transport equipment is greatly limited, especially the operation space of the thin ore body is seriously insufficient, it is impossible to operate the ore extraction activities in the gently inclined thin ore body
Under the current circumstances, the efficiency of using rock loaders is not high, and the transportation distance is short, and the maneuverability is not high; while the underground vehicles have relatively high requirements on the scale of the mine and the tunnel engineering; therefore, the use of scrapers is to promote mine efficiency It is an important part of mining, and the climbing ability and effective distance of the scraper are limited. Only when the climbing angle is less than or equal to 12° and the distance is within 100m can the efficiency of the scraper be maximized; when the inclination angle When it reaches 15°~25°, arranging the LHD transport roadway directly along the inclined direction will increase the climbing angle of the LHD, reducing its operating efficiency and making the equipment unable to operate.
Under such circumstances, the use of electric rakes to extract ore is an important choice, but the ore extraction efficiency of the traditional single electric rake serving a single stope is very low, which greatly limits the production capacity of the mine

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
  • Efficient ore removal method for gently inclined thin ore body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] see figure 1 As shown in the figure, this embodiment provides an efficient mining method for a gently inclined thin ore body. The gently inclined ore body has an inclination angle within 30° and a thickness of 1.8m to 3m, which specifically includes the following steps:

[0041] S1. Divide the gently inclined thin ore body to be mined into several stopes, and the specifications of each stope are: the height is 30m, the width is 6-8m, and the length is within 80m; The stope 11 and the second stope 12) are used as the synchronous mining unit 1, and the uphill roadway 2 parallel to each other is arranged in the middle of each stope; the specification of the uphill roadway 2 is 2*1.8m.

[0042] S2, arrange the electric harrow chamber 4 in the outer side of the lower middle section roadway 3 located in the lower wall of the ore body, and install the electric harrow winch 6; the electric harrow chamber 4 is located in the middle position of the two uphill roadways 2 in the sy...

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

No PUM Login to View More

Abstract

The invention provides an efficient ore removal method for a gently inclined thin ore body, which comprises the following steps of: taking two separated stopes as synchronous stoping units, and adopting retreating mining; an electric scraper bucket in the uphill roadway on one side is pulled by an electric scraper wire of the electric scraper winch to move upwards to an ore falling point of the stope; the rotating direction of the scraper winch is changed, the scraper bucket rakes out the ore downwards, and meanwhile, the scraper bucket in the uphill roadway on the other side passively moves upwards to the ore falling point of the stope; and then the rotating direction of the scraper winch is changed again, so that the scraper bucket on the side rakes out the ore downwards. A single chamber and a single scraper winch are arranged to serve double-scraper-bucket combined ore removal of the double stopes, the scraper winches are circularly turned to achieve alternate ore raking and ore removal of the electric scraper buckets on the two sides, the ore removal efficiency in a panel is doubled, and the investment of the scraper winches and the chambers is doubled; the mining cost is reduced while mining and ore removal are improved, good economic benefits are achieved, and good practical application value is achieved.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to an efficient mining method for gently inclined thin ore bodies. Background technique [0002] The mining of sloping-slightly sloping thin veins has always been a difficult problem in the mining industry. Over the years, a large number of engineers and technicians have been continuously exploring and researching. Although progress has been made to a certain extent, it is still not completely effective. technical difficulties. The investigation and statistics of the mining methods of similar inclination-gentle inclination at home and abroad and the corresponding main technical and economic indicators are carried out respectively. Variations of the scheme, in which the room-and-pillar method and the comprehensive method are the main ones. Due to the limitation of mining technical conditions such as the ore body occurrence, the caving ore cannot be completely discharged at the botto...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/22E21F13/00E21F15/00
CPCE21C41/22E21F13/00E21F15/00
Inventor 李伟明覃敏何环莎吕冠颖朱必勇
Owner CHINA MINMETALS CHANGSHA MINING RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products