Air reverse circulation at the hole bottom in ice-core drilling
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Glaciology"
DOI: 10.1017/jog.2018.95
Abstract: Ice-core drilling to depths of 200–300 m is an important part of research studies concerned with paleoclimate reconstruction and anthropogenic climate change. However, conventional drilling methods face difficulties due to firn permeability. We have developed… read more here.
Keywords: ice core; core drilling; drilling; air reverse ... See more keywords
Application of slip line theory and core drilling in the prediction of rock c-φ parameters
Sign Up to like & getrecommendations! Published in 2020 at "European Journal of Environmental and Civil Engineering"
DOI: 10.1080/19648189.2020.1755369
Abstract: The cohesion c and the internal friction angle φ (hereinafter referred to as the c-φ parameters) are the basic parameters that characterise rock strength. This paper proposes a method that makes us... read more here.
Keywords: theory core; slip line; line theory; application slip ... See more keywords
Research on a High-Precision Measurement Algorithm Using FOG-Based Single-Axis RINS for Core Drilling
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2023.3253890
Abstract: It is much important for core drilling to measure the orientation and trajectory of the drill bit precisely. Presently, with the higher and higher accuracy requirements of orientation and positioning, the utilization of inertial navigation… read more here.
Keywords: core drilling; high precision; algorithm; based single ... See more keywords