In goaf the float coal spontaneous combustion disaster affects seriously the safe production of the coal mine.
采空区浮煤自燃灾害严重影响了煤矿的安全生产。
The major effect factors of heat accumulating has temperature, float coal thickness, air leak intensity and voidage.
影响煤体热量积聚的主要因素有温度、浮煤厚度、空隙率和漏风强度。
This paper proposed to use coal tar and other processed products instead of partial heavy oil for float glass plants and analyzed related market supply, economic and technical feasibility.
主要提出了浮法玻璃工厂使用煤焦油及其深加工产品替代部分重油的可行性，分析了有关的市场情况、经济性和技术可行性。
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