کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
275089 1429530 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of atmospheric pressure fluctuations on hill-side coal fires and surface anomalies
ترجمه فارسی عنوان
اثر نوسانات فشار جوی در آتش سوزی زغال سنگ و ناهنجاری های سطحی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
چکیده انگلیسی

This paper presents numerical studies on the effects of atmospheric pressure fluctuations on hill-side coal fires and their surface anomalies. Based on the single-particle reaction–diffusion model, a formula to estimate oxygen consumption rate at high temperature controlled by oxygen transport is proposed. Daily fluctuant atmospheric pressure was imposed on boundaries, including the abandoned gallery and cracks. Simulated results show that the effects of atmospheric pressure fluctuations on coal fires and surface anomalies depend on two factors: the fluctuant amplitude and the pressure difference between inlet(s) and outlet(s) of the air ventilation system. If the pressure difference is close to the fluctuant amplitude, atmospheric pressure fluctuations greatly enhance gas flow motion and temperatures of the combustion zone and outtake(s). If the pressure difference is much larger than the fluctuant amplitude, atmospheric pressure fluctuations exert no impact on underground coal fires and surface anomalies.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mining Science and Technology - Volume 25, Issue 6, November 2015, Pages 1037–1044
نویسندگان
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