Design and numerical analysis of a large‐diameter air reverse circulation drill bit for reverse circulation down‐the‐hole air hammer drilling

Design and numerical analysis of a large‐diameter air reverse circulation drill bit for reverse circulation down‐the‐hole air hammer drilling

Abstract Reverse circulation down‐the‐hole (RC‐DTH) air hammer drilling is a fast and cost‐effective method for hard rock drilling. As the air RC drill bit is the heart for RC‐DTH air hammer drilling system to form the reverse circulation, a large‐diameter RC drill bit was innovatively designed and...

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Bibliographic Details
Main Authors: Xinxin Zhang, Yongjiang Luo, Xin Gan, Kun Yin
Format: Article
Language:English
Published: Wiley 2019-06-01
Series:Energy Science & Engineering
Subjects:
RC drill bit
RC‐DTH air hammer
reverse circulation
suction ability
Online Access:https://doi.org/10.1002/ese3.321

Internet

https://doi.org/10.1002/ese3.321

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