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Optimal refuge chamber position in underground mines based on tree network.

Zhixuan Shao1, Yu Cheng Yang1, Mustafa Kumral1

  • 1Mining and Materials Engineering Department, McGill University, Montréal, Canada.

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|January 3, 2023
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Summary

This study optimizes underground refuge chamber locations for worker safety. It proposes new methods to determine the best placement, ensuring rapid access during emergencies and considering varying worksite risks.

Keywords:
Mine designMine safetyP-centre problemcovering problemrefuge chamber locationunderground mining network

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Area of Science:

  • Mining Engineering
  • Operations Research
  • Safety Management

Background:

  • Underground mining safety is paramount, aiming for zero accidents and fatalities.
  • Refuge chambers are critical for worker survival during emergencies.
  • Optimal placement of refuge chambers is essential due to varying worker distribution and site conditions.

Purpose of the Study:

  • To determine optimal locations for refuge chambers in underground mining networks.
  • To develop a formula for quantifying worksite importance.
  • To present feasible localization strategies for refuge chambers.

Main Methods:

  • Modeling the underground network as a tree structure.
  • Developing a formula to quantify the importance of each worksite.
  • Implementing a recursive solution for the 'Absolute Weighted P-centre Problem'.
  • Applying a spiral approach to the 'Total Covering problem'.

Main Results:

  • The proposed methods successfully identify viable refuge chamber locations.
  • The solutions effectively address varied maximum safety distance requirements for different working areas.
  • Case studies demonstrate the practical application and functionality of the approaches.

Conclusions:

  • The developed strategies provide effective solutions for refuge chamber localization in underground mines.
  • Optimal placement enhances worker safety by ensuring rapid emergency access.
  • The methods account for the dynamic nature of underground operations and associated risks.