Numerical simulation study on the airtightness of protective sealed doors in coal mine movable refuge chambers
LIU Zhitong
Abstract：To investigate the impact of various factors on the airtightness of protective sealed doors in coal mine movable refuge chambers,an accurate three-dimensional model of the protective sealed door was established using numerical simulation methods.Under the load of explosion flow field in under-ground mine tunnels,the relative jumping displacement between the locking mechanism and the door frame was calculated under different conditions,including varying numbers of locking mechanisms,different properties of sealing strips,and different strengths of door frames.Comparative analysis was conducted on how these factors affect the airtightness of the protective sealed doors.The study pro-vides basic patterns regarding the influence of locking mechanisms,sealing strips,and door frames on the jumping displacement related to airtightness.This research offers technical references for the de-sign and optimization of protective sealed doors in refuge chambers.
Keywords：airtightnessprotective sealed doorfinite elementrefuge chamberexplosion loads
Publication Date：2024-08-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 60-64,54 )