spontaneous combustion coal

The formation and harm of spontaneous combustion in coal field are generally described.

煤层自燃形成的煤田火区是煤矿区重要灾害之一.

On a global scale, there are many coalfields suffered from spontaneous combustion of coal seam problems.

在全球范围内, 许多煤田都存在煤层自燃问题.

In Zhunnan Jurassic coal-field, the spontaneous combustion of coal very serious, and there are long history.

准南煤田侏罗系煤层自燃严重, 火烧历史悠久.

The spontaneous combustion of coal seam of the major problems in safe production of coal mine.

煤层自燃问题一直困扰着我国煤矿的安全生产.

The connection profile between the spontaneous combustion period and the high temperature movement was get through altering air leak intension, boundary condition and granularity parameter of coal sample.

并通过改变漏风强度、散热边界条件、煤样破碎粒度参数对模型进行反复计算，得出各参数与煤自然发火期及高温点移动的关系曲线；

The spontaneous combustion of coal seam endangers the safe production.

井下煤层自燃严重危害着安全生产.

Test Research on Preventing Spontaneous Combustion in Gob with Pre-injecting Inhibitor into Coal Application of Reinforcement Technology with Grunting in Full-mechanized Mining through Empty Roadway

煤层预注阻化剂防治采空区煤自然发火试验研究注浆加固技术在综采面过空巷中的应用

And the propensity of spontaneous combustion in caving zones, can be divided into three zones. The simulation results have guidance for the accurate monitoring distribution and development of high temperature spots of coal in tunnels.

并根据自燃倾向性对巷道冒落区进行三区划分，模拟结果对于准确监测巷道冒落区煤层内高温点的分布与发展情况具有指导意义。

Spontaneous combustion is easily to take place in mined out area of fully mechanized top coal caving workface.

开展采空区稳定性方面的研究，对保证矿山持续发展和人民生命财产安全有非常重要的意义。

The theories on the flow pattern of the air inside gangue hills and lacunaris medium dynamics was used to deduce a mathematical model which is sufficient to describe the dynamic process of sufficient and necessary conditions for spontaneous combustion of coal gangue.

利用矸石山内气体的流动状态和多孔介质动力学理论，推导出能够描述矸石山自燃发火充分必要条件的动态演变过程的数学模型；