Gob-side entry stope face hard roof ground pulse roof cutting method
A technology of back mining and hard roof in the empty roadway, which is applied in the direction of ground mining, tunnels, mining fluids, etc., and can solve the problems of easy deviation of test orientation, inaccurate test data, and increased hidden dangers of coal mine safety production work
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0027] Below in conjunction with accompanying drawing, the present invention will be further described:
[0028] Such as Figure 1 to Figure 9 As shown, a method for ground pulse cutting of a hard roof in an empty roadway mining face of the present invention includes a borehole penetrometer and an electric pulse device 4, and the borehole penetrometer includes a delivery rod 8, a lifter 7, Probe 9, probe 10, hand pump 6 and data acquisition instrument 12, described conveying rod 8 is telescopic rod member, and the lower end of conveying rod 8 is connected with lifter 7, and its outer diameter is less than the borehole 23 to be detected. Inner diameter; the lifter 7 is fixedly installed in the gob-side tunnel 5, the lifter 7 is a liftable structure, and the pitch angle can be adjusted, so that not only the depth of the conveying rod 8 entering the drill hole 23 can be adjusted, but also the conveying rod can be adjusted 8 angles to adapt to the drilling 23 of different angles;...
PUM
Property | Measurement | Unit |
---|---|---|
Aperture | aaaaa | aaaaa |
Diameter | aaaaa | aaaaa |
Diameter | aaaaa | aaaaa |
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