Impact analysis on blast airtight door of new mine refuge chamber

CHANG De-gong， GAO Xin-jun1， FEI Zhen-zhong2， LI Song-mei1
(1. College of Electromechanical Engineering， Qingdao University of Science and Technology， Qingdao 266061， China；2. Marine Chemicals Research Institute， Qingdao 266071， China)

Abstract： Aiming at the blast airtight door of the new mine refuge chamber will be withstood the shock loads， when gas exploded underground，a new airtight structure of the refuge chamber door was proposed based on analyzing the existing doors. The impact load distribution on the door after the explosion was obtained through the dynamic analysis software ANSYS Autodyn to simulate the gas explosion underground. The strength of the overall door structure and each part were analyzed and computed by using ANSYS Workbench， therefore，the stress of the components at different explosion points and the position of the maximum stress were obtained，and the impact resistance of the new structure was researched. The analysis results indicate that the maximum stress of each component is within the allowable range of the selected materials，and verify the new structure design of the door is reasonable，which also provides certain reference for the development of the refuge chamber.
Key words： blast airtight door； explosive shock load； ANSYS； impact analysis