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

Drilling-explosion-pumping triadic pressure-relief outburst-prevention method

A three-in-one, outburst prevention technology, which is applied in the fields of earthwork drilling, gas discharge, safety devices, etc., can solve the problems of heavy drilling construction workload, low outburst prevention efficiency, and small effective impact range of drilling, etc. Highlight the danger, easy to operate, and reduce the effect of outstanding potential energy

Inactive Publication Date: 2009-12-30
CHINA UNIV OF MINING & TECH
View PDF0 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the measures used to eliminate conflicts in high-gassy and low-permeability coal seams mainly include deep hole loosening blasting, hydraulic punching, hydraulic slotting, and coal seam water injection. For the problem of low outburst prevention efficiency, it is necessary to adopt pressure relief and anti-reflection methods to expand the effective impact range of drilling and improve the overall outburst elimination effect

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
  • Drilling-explosion-pumping triadic pressure-relief outburst-prevention method
  • Drilling-explosion-pumping triadic pressure-relief outburst-prevention method
  • Drilling-explosion-pumping triadic pressure-relief outburst-prevention method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be further described below in conjunction with the embodiment in the accompanying drawings:

[0017] The three-in-one pressure relief and anti-outburst method of drilling, blasting and pumping of the present invention:

[0018] (1) On the coal seam 1 in front of the coal mining or excavation face, the control holes 9 and the blasting holes 4 are alternately arranged along the bedding or through the bedding; a single row or multiple rows are arranged to drill several long boreholes. Ordinary drilling construction technology is basically the same, you can choose spiral or round drill pipe according to your needs;

[0019] (2) First carry out construction work on alternately arranged control holes 9 one by one. The depth of the control holes 9 along the bedding is 8-15m, and the depth of the through-bedding drilling is 20-40m. hole operation, and connect the borehole to the drainage pipe network through the drainage hole pipe, manifold pipe and ...

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 a drilling-explosion-pumping triadic pressure-relief outburst-prevention method, which is most suitable for regional pressure-relief outburst-prevention of a high gas and low permeability outburst coal seam. The method comprises the following steps: alternately arranging hole positions of control holes and blast holes of an along bed or a cross seam on a coal seam in front of a coal mining or tunneling working surface; performing construction work on the control holes one by one which are arranged alternately, and performing gas drainage pressure-relief on the coal seam; and constructing the blast holes one by one which are arranged alternately, placing emulsion explosive, detonating a detonating cord for detonation until finishing all operation of the blast holes of the working surface, and performing cycle operation on the next working surface. The method can improve the air permeability of a coal body by 20 to 50 times, has full entire pressure relief and function of effectively preventing outburst, and provides excellent conditions for high work efficiency and safe mining; and the method has the advantages of simplicity, convenient operation and good using effect, and improving the labor efficiency and reducing the labor intensity.

Description

technical field [0001] The invention relates to a three-in-one pressure relief and outburst prevention method of drilling, blasting and pumping. It is especially suitable for regional pressure relief and outburst prevention in high-gas and low-permeability outburst coal seams. Background technique [0002] Coal and gas outburst is one of the serious natural disasters in the process of coal mining, especially with the efficient intensification of coal production and the increase of mining depth, the amount of gas gushing out is increasing, and the risk of gas explosion and gas outburst is dangerous. More and more serious, gas disasters have become the most important factor restricting the development of efficient and intensive mining technology and safe production. Therefore, how to effectively solve the problem of gas gushing in the process of mining high-gas coal seams is of great significance to the safe production of coal mines. Since the 1970s, my country has carried o...

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): E21F7/00
Inventor 林柏泉翟成孙鑫吴海进
Owner CHINA UNIV OF MINING & TECH
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com