Junjian Xu

Title: Junjian Xu: Innovations in Coal Seam Drilling and Cutting

Introduction

Junjian Xu is an inventor based in Chongqing, China, whose work focuses on technologies for coal seam pressure relief, permeability improvement, and gas control. His listed portfolio includes 2 patents. He is associated with CCTEG Chongqing Research Institute.

Latest Patents

Xu’s recent inventions address abrasive jet cutting and coordinated drilling and cutting in coal seams.

“Rear-Mounted Double-Channel Abrasive Jet Cutting Device” conveys high-pressure water and abrasive through separate channels. This design helps prevent wear to hoses and drilling tools caused by mixed conveyance, reduces pressure loss in the water channel, and improves coal-breaking performance and equipment service life.

“High Pressure Water Jet Automatic Drilling and Cutting Collaborative System and Method for Coal Seams” combines a control platform with automatically regulated pumping and drilling equipment. The platform uses geological information to determine construction parameters, monitors operations, and supports real-time feedback and adjustments. The system is designed to improve operator safety while reducing labor intensity and personnel requirements.

Career Highlights

Xu’s patent work reflects an emphasis on practical engineering systems for coal seam operations. His inventions combine specialized equipment with monitoring and control processes to support safer, more coordinated drilling and cutting.

Collaborations

Xu is associated with CCTEG Chongqing Research Institute. His listed coworkers include Yongjiang Zhang and Lindong Guo.

Conclusion

Junjian Xu’s inventions focus on improving the performance, coordination, and safety of coal seam drilling and cutting through specialized jet-cutting equipment and automated operational systems.