采空区自然发火位置相似模拟模型

Study on resembling simulation experiment of spontaneous combustion in goaf

为了研究不同类型的采空区漏风对采空区自然发火的影响,依据采空区的漏风状态不同,把采空区划分成不同的火灾危险区域,以此判断采空区发火位置。研制了相似模拟模型,针对采空区自然发火问题进行了多项模拟实验,观测并绘制了不同风量下采空区风压等值线及风流分布图;绘制了采空区不同位置漏风情况下风压等值线及风流分布图;绘制了上隅角设置瓦斯排放风筒后采空区风压等值线及风流分布图;设计了采空区充填带,并获得了采空区风压等值线及风流分布图。

To study the impact of different types of ventilation leakage on spontaneous combustion in goal, and in accordance with the different states of ventilation leakage in goaf ,the goaf is divided into different regions of the fire danger,in order to judge the location of spontaneous combustion in goal. By developing the resembling simulation models, many experiments are carried out to research the spontaneous combustion in goal. Then, the goaf ventilation pressure isoline and ventilation flow distribution are observed and drawn,which are also drawn after the air duct for gas releasing is placed in the upper corner of coal face and after the stowing strips are placed in goal.