【作者】 高洋；

【导师】 孟宪锐；

【作者基本信息】 中国矿业大学（北京） ， 采矿工程， 2014， 博士

【摘要】 随着煤炭开采向深部发展，瓦斯涌出量逐渐增大，煤自燃问题也日益严重，瓦斯与煤自燃共生灾害也越来越多。为了解决这一问题，提出用物质导数的概念来研究瓦斯与煤自燃的相互作用，用在舱体内的相似模拟实验和Fluent数值模拟分析了采空区自燃三带的瓦斯涌出和运移情况，并用Origin软件对实验数据进行了分析。研究了采空区的特征及渗透率和孔隙率对瓦斯流动和煤自燃的影响，Bleeder system和Bleederless system两种通风系统对防治瓦斯和煤自燃所起的作用，以及采空区内渗透率增大100倍时两种通风系统内的温度变化。通过研究，得到了采空区内瓦斯与煤自燃之间的相互作用关系，高瓦斯涌出对煤自燃有抑制作用，同时煤自燃也会影响采空区内的瓦斯运移。掌握了瓦斯在采空区内不同区域、不同温度下的涌出情况和运移分布规律，采空区内渗透率的增大对Bleederless system的升温影响较大，为进一步防治瓦斯与煤自燃提供了保障。更多还原

【Abstract】 With the development of coal mining to the deep, gas emission increases, spontaneouscombustion of coal is also serious increasingly, gas and spontaneous combustion symbioticdisasters are increasing. To solve this problem, using the material derivative to study gas and coalspontaneous combustion, analyzes gas emission and transport conditions of three zones in the gobused the similar simulation experiments and Fluent numerical simulation in the chamber and theexperimental data was analyzed by Origin software. Studied the affect between characteristics andpermeability and porosity in the gob and gas flow and spontaneous combustion of coal, the role ofBleeder system and Bleederless system played in prevention and treatment of spontaneouscombustion of coal and gas, as well as changes of temperature in the mined area when thepermeability increases100times in two ventilation systems. Through the research, get theinteraction between gas and spontaneous combustion of coal in the mined-out area, high gasemission inhibit the spontaneous combustion of coal, while spontaneous combustion of coal in themined out area will also affect gas migration, mastered the situation of gas emission, transport anddistribution in different regions of the gob area under different temperatures, increasedpermeability of the gob area has a greater impact to the Bleederless system and provided aguarantee to the further prevention of gas and spontaneous combustion of coal.更多还原