摘要
综放工作面采空区浮煤自燃主要取决于浮煤厚度、氧浓度、漏风强度、工作面推进速度和自然发火期 5个参量 ,工作面正常生产时 ,采空区自燃三带处于一个动态的稳定状态 .根据综放工作面采空区自然发火特点 ,将松散煤体自然发火数学模型简化 ,建立了综放工作面采空区温度变化的动态数学模型 ,用计算机动态模拟采空区浮煤自然升温过程 ,及时反映采空区温度分布状态及其动态变化规律 ,对采空区浮煤自燃危险性进行超前预测 ,指导综放工作面的安全生产 .
Float coal self ignite mainly rests with float coal thickness, oxygen concentration, air leak intensity, advance velocity and spontaneous combustion period in goaf. As the production is normal in working face, the three zones are dynamic stable state in goaf. According to the characteristic of coal spontaneous combustion in goaf in fully mechanized caving face, simplified mathematical model of coal spontaneous combustion, dynamic mathematical model of temperature change is set up in goaf. Computer dynamically simulates the process of coal spontaneous elevating temperature, and temperature distribution and its dynamic change rule is timely reflected in goaf. The risk of coal self ignite is forecasted in advance by dynamic simulation in gob, and guide safety in production.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2002年第1期54-58,共5页
Journal of China Coal Society
基金
国家自然科学基金资助项目 (5 99740 2 0 )
