Simulation analysis on structure safety of coal mine mobile refuge chamber under explosion load

Huanjuan Zhao, Xin ming Qian*, Jing Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

In order to check structural strength of coal mine mobiles refuge chamber, and do security evaluation of the mobile refuge chamber, a refuge chamber model was established, then a finite element method was instituted for it to ensure the refuge chamber would not be severely damaged when gas or coal dust explosion suddenly happened. A triangle shock wave with 1.2. MPa over-pressure, 300. ms lasting time was settled. Explicit nonlinear dynamic analysis program was used to simulate response of the refuge chamber. The maximum stress was 244. MPa, located in central part of sides and tail end of the last capsule. The maximum displacement was 29.32. mm, located in central part of sides and tail end of the last capsule. The calculation indicated that the refuge chamber was not obviously damaged. It could reliable work to meet safety requirements. Compared with the reported experimental results, the simulation method was verified. Based on analysis, suggestions were put forward for further improving.

Original languageEnglish
Pages (from-to)674-678
Number of pages5
JournalSafety Science
Volume50
Issue number4
DOIs
Publication statusPublished - Apr 2012

Keywords

  • Coal mine
  • FEA
  • Refuge chamber
  • Shock wave
  • Structure safety

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