کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
283911 1430649 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vacuum chamber suppression of gas-explosion propagation in a tunnel
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
پیش نمایش صفحه اول مقاله
Vacuum chamber suppression of gas-explosion propagation in a tunnel
چکیده انگلیسی

To control and reduce the harm of a gas explosion, a new method is proposed for suppressing gas-explosion propagation in a tunnel by using a vacuum chamber. We studied the suppression effect on gas explosions by placing a vacuum chamber at different positions along the tunnel. The results indicate that: 1) the vacuum chamber can absorb the explosion wave and explosion energy as much as possible at the beginning of the gas explosion, and; 2) when the vacuum chamber is used the closer it is to the ignition source the more significant the suppression effect. In addition, by using the vacuum chamber: 1) the flame propagation velocity decreases from ultrasonic to subsonic; 2) the flame propagation distance is remarkably shortened; 3) the maximum peak value of overpressure (pm) decreases from 0.34 to 0.17 MPa or less, and; 4) the impulse of the blast wave (I decreases from 20 to 8 kPa·s or less.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of China University of Mining and Technology - Volume 18, Issue 3, September 2008, Pages 337-341