一种应用于防治冲击地压的专用钻头
By designing a special drill bit with a skirt plate, auger blades, and a hollow shaft structure, the problem of poor discharge of coal cuttings and drill slag inside the borehole was solved, improving the borehole forming rate and slag discharge efficiency, and preventing rockbursts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA UNIV OF MINING & TECH (BEIJING)
- Filing Date
- 2023-09-11
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the borehole formation rate of rockburst relief drilling is low, mainly because coal cuttings and drill slag in the borehole cannot be discharged in time, leading to borehole blockage and ineffective pressure relief.
A special drill bit was designed to achieve rapid collection and transportation of coal cuttings and drill slag through the combination of a skirt plate, auger blades and a hollow rotating shaft. The drive turbine and ratchet structure ensure unidirectional flow of drill slag, avoid reverse flow, and improve slag discharge efficiency.
It improves the borehole formation rate, reduces the amount of drill cuttings in the borehole, enhances the cuttings removal capacity, ensures smooth borehole operation, prevents borehole blockage, and effectively prevents rockburst.
Smart Images
Figure CN117231120B_ABST