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Note: A novel experimental setup for high-pressure abrasive liquid nitrogen jet.

Shikun Zhang1, Zhongwei Huang1, Huaizhong Shi1

  • 1State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China.

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Summary

A novel setup enables experimental investigation of abrasive liquid nitrogen (L-N2) jets for rock breakage. This technology leverages L-N2

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Geotechnical Engineering

Background:

  • Abrasive liquid nitrogen (L-N2) jets offer a unique low-temperature approach for rock breakage.
  • Understanding the interaction between L-N2 jets and rock is crucial for developing advanced excavation technologies.

Purpose of the Study:

  • To introduce and validate a new experimental setup for studying abrasive L-N2 jet rock breakage.
  • To enable investigation of various parameters influencing the rock-breaking efficiency of L-N2 jets.

Main Methods:

  • Development of a specialized experimental setup incorporating power, nitrogen-gas pressurization, particle mixing, and impingement systems.
  • Capability to generate both pre-mixed and post-mixed abrasive L-N2 jets.
  • System allows for systematic variation of injection and particle parameters.

Main Results:

  • Successful implementation of the experimental setup for abrasive L-N2 jet rock breakage studies.
  • Demonstrated ability to investigate the effects of different operational parameters.
  • Experimental data generated supports the advancement of L-N2 jet technology.

Conclusions:

  • The developed setup is effective for studying abrasive L-N2 jet rock breakage.
  • The findings contribute to the broader application of L-N2 jets in rock excavation.
  • Further research using this setup can optimize L-N2 jet rock-breaking processes.