Room-and-pillar major-diameter longhole inverted-step-like segmented lateral caving subsequent filling mining method

A filling mining method and large-diameter technology, which can be used in surface mining, underground mining, special mining, etc., and can solve problems such as increased large block rate, uneven ore wall of ore pillars, and increased workload of secondary blasting in the stope, etc.

Inactive Publication Date: 2013-03-06
彭康
View PDF3 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mining method of sectional emptying and subsequent filling requires the excavation of multiple sectional transport level roadways, rock-drilling horizontal roadways, and cutting patios. The mine wall of the pillar is uneven and the integrity is damaged, which leads to the deterioration of the mining conditions of the pillar. At the same

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
  • Room-and-pillar major-diameter longhole inverted-step-like segmented lateral caving subsequent filling mining method
  • Room-and-pillar major-diameter longhole inverted-step-like segmented lateral caving subsequent filling mining method
  • Room-and-pillar major-diameter longhole inverted-step-like segmented lateral caving subsequent filling mining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Specific use cases for the proposed mining method of the present invention are:

[0028] ① Divide the ore body seamless pillars into panel areas, and divide continuous mining units in the panel area, implement the mining sequence of "one mining at a time", that is, mining room first and then mining pillars. The width of the stope is 15m, and the length is the thickness of the ore body. The height is 60m;

[0029] ② Mining project: the bottom is stage transportation level roadway 1 → ore exit contact roadway 2 → rock drilling and ore collection horizontal roadway 3 → "V" type cutting ditch 4 → mine exit roadway 5 → return air connection roadway 6 → return air level Lane 7; the top is rock drilling chamber connecting road 8→rock drilling chamber 9→return air connecting road 6→return air flat road 7, and the size of the roadway depends on the specifications of the trackless equipment;

[0030] ③Smooth blasting is used to form a rock-drilling chamber with a width of 15m an...

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 discloses a room-and-pillar major-diameter longhole inverted-step-like segmented lateral caving subsequent filling mining method for a steeply-inclined medium-thick orebody and gently-inclined and inclined extremely-thick orebodies with steady surrounding rocks at upper and lower panels. The method is characterized in that: an orebody is divided into panels, then the panels are divided into continuous single-stage stoping units, and mining is carried out by using a stoping sequence of stoping one unit every other unit, i.e., mining a room at first and a pillar next; when mining a room, a V-shaped trench bottom structure is employed, a longhole drilling chamber is arranged at the upper part of stope, bar-shaped pillars are left to support the top plate of the chamber, a down-the-hole drill is used for drilling rocks, an explosion mode of light section VCR method underholing inverted-step-like lateral caving with a common emulsion explosive is employed, access roads towards the room for ore removal are arranged in the pillars, and cemented roof-contact filling is employed; and during stoping of the pillars, access roads for ore removal are dug towards the pillars in cemented bodies in the room, a stoping manner for the pillars is identical to that for the room, and non-cemented filling with tailings and waste is employed. The method provided by the invention has the advantages of high security, a low production cutting ratio, great production capacity, low operation cost and small loss and dilution of resources.

Description

technical field [0001] The invention belongs to the technical field of mining, and relates to a room-and-pillar type large-diameter deep hole inverted step-shaped segmented lateral collapse and subsequent filling mining method. ~ Inclined extremely thick large ore body. technical background [0002] At present, most of the large orebodies with steep incline above medium thickness and gently incline to extremely thick are mined by segmented open-stop and then-fill method or the traditional "VCR" method. The mining method of sectional emptying and subsequent filling requires the excavation of multiple sectional transport level roadways, rock-drilling horizontal roadways, and cutting patios. The mine wall of the pillar is uneven and the integrity is damaged, which deteriorates the mining conditions of the pillar. At the same time, the use of fan-shaped holes usually increases the large block rate, which increases the workload of the secondary blasting in the stope and reduces ...

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
Inventor 彭康赵国彦刘志祥王成李启月
Owner 彭康
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