The Research And Applying Of Oxidizing Law Of 8th Coal In ZhangJi North Mining

The problem of coal spontaneous combustion always puzzles the safety manufacture of coal mining in our country, predominating coal spontaneous combustion mechanism and investing the law of coal oxidizing under low temperature condition are the bases of coal spontaneous combustion prevention. This paper widely reads coal oxidizing under low temperature literatures of home country and out country, also summarizes the invested productions of pre-humans systemically, processes with the essence of coal absorbing oxygen and releasing heat under low temperature, by contrast with the heating analysis, low temperature oxidizing, absorbing oxygen and conducting heat experiments of the fresh coal and oxidized coal analyzes the low temperature oxidizing principles of 8 lay coal of Zhang Ji North mine, also measures the distributing and changing orderliness of oxygen concentration , oxidizing output and losing coal temperature in 11418 first work face goaf by pre- burying pipes and thermoelectric pairs method. The paper also combining with the thermodynamics and diathermanous theory simulates the 8 lay coal goaf temperature changing disciplines under different mining velocity condition in fact, ascertains the index gas for forecasting 8 lay coal spontaneous combustion and ignition, therefore provides credible theory and practical gist for Zhang Ji North mine.