Gas explosion coal seam permeability increasing extraction method in borehole in later period of induction extraction
A drilling and drainage technology, which is applied in the direction of gas discharge, mining equipment, earthwork drilling, etc., can solve the problems of limited penetration range, uneven and discontinuous detonation gas concentration distribution area, and achieve high transmission efficiency of explosion wave , Increase the development of coal fractures and the uniform distribution of gas concentration
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment
[0028] a. Insert the 20m-long gas extraction pipe 7 into a borehole with a diameter of 94mm and a depth of 100m, then seal the borehole with pressurized cement grouting, install the gas concentration monitoring device 2, carbon monoxide monitoring device 3, temperature The monitoring device 4 is set on the pipeline of the underground negative pressure drainage main pipeline 1, and the spark generator 6 is set on the pipeline of the gas drainage pipe 7. By what means are the spark generator 6 connected to the gas concentration monitoring device 2 and the carbon monoxide monitoring device? Device 3 and temperature monitoring device 4 are isolated and separated by three-way ball valve 5;
[0029] b. When the gas concentration monitoring device 2 monitors that the gas concentration in the gas extraction pipe 7 is 9.3%, close the three-way ball valve 5, and connect the power to the spark generator 6 to cause the gas in the borehole to detonate;
[0030] c. After the gas explosion i...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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