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

Sandstone aggregate mine rock mass blasting mining method

A mining method and mining rock technology, applied in blasting, ground mining, earth square drilling and mining, etc., can solve problems such as large blindness, lack of basis, and high powder ore rate, so as to reduce overall cost, reduce blindness, and reduce fine ore rate effect

Pending Publication Date: 2022-02-08
HONGDA MINING IND +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no basis for the design of blasting parameters in the existing sandstone aggregate mine rock mass blasting mining method. Most of the blasting parameters are randomly adjusted after sensory judgment, which is blind, and it is difficult to guarantee the blasting effect. Still relatively high, generally in the middle rock area (100kg-800kg) the powder ore rate is above 40%

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
  • Sandstone aggregate mine rock mass blasting mining method
  • Sandstone aggregate mine rock mass blasting mining method
  • Sandstone aggregate mine rock mass blasting mining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0068] In a rock mass quarry of a large-scale sandstone aggregate mine, six indicators including rock hardness, rock type, blasting funnel volume, blasting fragmentation distribution index, crack distance, and explosive unit consumption were used to dismantle the entire quarry rock mass according to requirements. Divide the large area above 800kg, the medium area of ​​100kg-800kg and the small area below 100kg. And through the geological record of the rock mass structural plane of the quarry and the blasting funnel test, the blasting fragmentation zoning map of the rock mass is drawn, as shown in figure 1 . The details of rock masses in each block are as follows:

[0069] Large area: rock type is granite, rock hardness f value>12, blasting funnel volume3 , Blasting lumpiness distribution index0.45kg / m 3 , The crack spacing of the main structural plane 130°∠80° is 70-200cm, and the crack spacing of the main structural plane 60°∠60-80°>100cm.

[0070] Middle block area: the r...

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 relates to blasting of mine rock mass, and particularly relates to a sandstone aggregate mine rock mass blasting mining method. The method comprises the following steps of partitioning according to a lumpiness requirement, and drawing a blasting lumpiness partition map of the rock mass; designing blasting parameters according to a lumpiness grading requirement required by a scheduling instruction of the production plan; performing hole distribution blasting mining operation on the lumpiness area; analyzing the lumpiness of the blast pile after blasting, and optimizing blasting parameters; and carrying out the next blasting mining operation according to the optimized blasting parameters. According to the method, the blasting lumpiness partition map is drawn, the rock mass is partitioned according to the lumpiness quality according to the six indexes, the method is more suitable for the reality of sandstone aggregate mine rock mass blasting mining, different rock mass areas can be selected for blasting operation according to the lumpiness proportion of a production plan, and the comprehensive cost of blasting operation can be reduced; in addition, blasting parameters are optimally designed, and a step blasting method of a non-uniform and non-coupling charging structure is adopted so that the comprehensive cost is further reduced, and the fine ore rate is greatly reduced.

Description

technical field [0001] The invention relates to the blasting technology of rock mass in mines, in particular to a mining rock mass blasting method for sandstone aggregate mines. Background technique [0002] The purpose of rock mass blasting in sandstone aggregate mines is to blast out stones with a qualified lump size as required, and the explosion energy of explosives will cause the rocks near the blast hole to be crushed, which cannot meet the lump size requirements, and the powder ore rate needs to be controlled. From an economic and technical point of view, in order to determine reasonable blasting technical parameters, material consumption quotas, control blasting fragmentation, and ensure the lowest comprehensive cost of drilling, blasting, installation, and transportation, the rock mass in the blasting area must be divided according to blasting fragmentation requirements. , that is, it is necessary to give a quantitative evaluation of the maximum block size and avera...

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): F42D1/00F42D1/08F42D3/04E21C41/30
CPCF42D1/00F42D1/08F42D3/04E21C41/30
Inventor 李萍丰刘成建张耿城
Owner HONGDA MINING IND
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com