Static and dynamic analysis of safety of steel outburst prevention air door

doi:10.16265/j.cnki.issn1003-3033.2017.12.013

Abstract

Abstract: In order to analyze the safety of a steel outburst prevention air door, a formula for calculating the peak of the load under gas outburst was derived based on mine site data and the theoretical formula. A time course curve equation of the impact load was derived based on the air door pressure data obtained from analog experiments. Static and dynamic characteristics of a steel outburst prevention air door structure under gas outburst were studied by using the numerical simulation method, and a comparison was made between the structure and the brick structure in the mine.The research shows that when the distance between the outburst point and the surface is 1 100 m, steel structure steel plate thickness of 3 mm meets the safety standards, that the stability of steel structure is not as good as the brick structure, but conforms to the safety standard, that in the transient dynamic analysis, the steel structure and the brick structure are similar in the trend in change of stress, and that the safety of the steel air door structure meets the brick structure safety standards.

Key words: gas outburst, impact load, numerical simulation, steel outburst prevention air door, safety design

CLC Number:

X936

DAI Shuhong, WANG Zhengting, XU Yan. Static and dynamic analysis of safety of steel outburst prevention air door[J]. China Safety Science Journal, 2017, 27(12): 74-79.

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