Beijing Univ of Science and Technology Seeks Patent for Rotary-Break Rock Breaking Method Based on Drill Bit Self-Adaptive Resonance

Published date27 March 2023
The patent application number is CN202210452647 20220427. The patent publication number is CN114776222 (A). International Patent Classification codes are E21B44/00 and E21B7/24. Cooperative Patent Classification codes are E21B44/00 (CN) and E21B7/24 (CN)

An abstract released by the State Intellectual Property Office of China states: "The invention discloses a rotary-break rock breaking method based on drill bit self-adaptive resonance. The rotary-break rock breaking method comprises the steps that a rock constitutive relation database, a drilling parameter database and an underground self-adaptive control closed-loop system are constructed; axial impact of the drill bit is achieved through the axial vibration exciter, and rotary impact resonance of the drill bit is achieved in cooperation with the drilling pressure and the rotating speed of the drill bit. Axial vibration acceleration signals of the drill bit are measured in real...

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