Modeling laser-spallation rock drilling

  • Xu Z
  • Yamashita Y
  • Reed C
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Abstract

High-power lasers can weaken, spall, melt, and vaporize Earth materials, with thermal spallation being the most energy-efficient rock-removal mechanism. The most interesting focus of recent laser rock-drilling research is on developing a laser rock-spallation technique to drill large and deep holes in rocks. Laser spallation has a rock-removal rate higher than conventional rotary drilling and flame-jet spallation. Research also is focused on the use of laser rock spallation to make perforation channels with improved permeability of the perforated rocks.

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Authors

  • Z. Xu

  • Y. Yamashita

  • C. B. Reed

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