【摘要】：為確定瑞安礦煤堆自燃的環(huán)境風(fēng)速,提高煤堆自燃的預(yù)判能力,使用COMSOL Multiphysics 5.0數(shù)值仿真軟件,開展了5個(gè)不同尺寸分別在孔隙率0.2~0.6和環(huán)境風(fēng)速0.05 m/s~13 m/s條件下堆放180 d的自熱-自燃過程數(shù)值模擬。結(jié)果表明,煤堆自燃風(fēng)速范圍因孔隙率和堆放參數(shù)不同而異,孔隙率越小煤堆的自燃風(fēng)速范圍越寬,且最小、最易、最大自燃風(fēng)速與孔隙率之間具有冪函數(shù)關(guān)系;影響煤堆最小、最易、最大自燃風(fēng)速顯著的參數(shù)分別為頂寬、底寬、高度、角度和孔隙率、孔隙率、高度和孔隙率,并構(gòu)建了三個(gè)自燃風(fēng)速的合理解算方程。
[Abstract]:In order to determine the ambient wind speed of spontaneous combustion of Ruian coal pile and improve the prediction ability of spontaneous combustion of coal pile, five numerical simulation software COMSOL Multiphysics 5.0 was used to simulate the spontaneous combustion process of five different sizes under the conditions of porosity 0.2 鈮，

本文編號(hào)：2507534