با سلام خدمت کاربران در صورتی که با خطای سیستم پرداخت بانکی مواجه شدید از طریق کارت به کارت (6037997535328901 بانک ملی ناصر خنجری ) مقاله خود را دریافت کنید (تا مشکل رفع گردد).
ردیف | عنوان | نوع |
---|---|---|
1 |
Experimental study on the explosion-propagation law of coal dust with different moisture contents induced by methane explosion
مطالعه تجربی در مورد قانون انفجار انتشار غبار ذغال سنگ با رطوبت مختلف ناشی از انفجار متان-2020 This study aimed to explore the explosion-propagation lawof coal dustwith differentmoisture contents induced
by methane explosion. An experimental system of explosion of mixed gas–coal and dust in a straight pipe was
established in our laboratory. The evolution of overpressure and the flame-propagation law of deposited-coaldust
explosion with different moisture contents were then studied. Experimental results indicate that when
the moisture content is less than 15.12%, the deposited coal dust in the pipeline explodes under the induction
of gas explosion.Meanwhile, the total amount of deposited coal dust in the pipeline remains constant; the overpressure
peak value and flame-propagation velocity after coal-dust explosion initially increase and then decrease
with increased coal-dust moisture content. When the moisture content of the deposited coal dust is 9.57%, the
overpressure and flame-propagation velocity of the depositional coal-dust explosion reach the maximumvalues
of 0.766MPa and 468.553 m/s, respectively. However,when the moisture content exceeds 20.28%, coal dust cannot
induce an explosion, and the deposited coal dust can resist a gas explosion. Overall, this research provides
theoretical references for methane-induced coal-dust-explosion resistance in coal mines. Keywords: Moisture content | Coal dust | Mixed explosion | Explosion resistance |
مقاله انگلیسی |