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《Journal of Central South University(Science and Technology)》 2012-12
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Comprehensive analysis techniques for mine fire accident investigation

NIU Hui-yong1,2,DENG Jun1,3,ZHOU Xin-quan4,WANG Hai-qiao1,2(1.School of Energy and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;2.Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines,Hunan University of Science and Technology,Xiangtan 411201,China;3.School of Energy Engineering,Xi’an University of Science and Technology,Xi’an 710054,China;4.State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology(Beijing),Beijing 100083,China)  
In order to ensure the scientific and objective investigation of the mine fire accident,theory model of roadway longitudinal temperature attenuation was established during unsteady heat exchange.Through analyzing the sphere of influence on mine fire disaster and the extent of damage to equipment and components in underground,the feasibility analysis for the interior and appearance of material evidence in mine fire which will be applied to coal mine fire accident investigation was carried out.Through analyzing the change of the electrical properties,microstructure,hardness and strength of different materials in coal mine when the fire happens,the change law of capability of common material during the different degrees of thermal in mine was obtained.According to the characteristics of mine fire,the quantitative relationship between temperature and damage was erected.The results show that when the mine fire investigation is carried out,the reason of fire can be cleared based on the changes of materials and equipment destroyed by fire,and the highest temperature and combustion duration of the fire can be anti-pushed,therefore,occurrence and development of fire can be deduced,and the technical support of material evidence analysis can be provided for coal mine fire accident investigation.
【Fund】: 国家自然科学基金资助项目(51274099);; 湖南省教育厅资助项目(10C0660);; 湖南省高校科技创新团队支持计划项目(2008);; 湖南科技大学重点学科学术创新团队支持计划项目(2012)
【CateGory Index】: TD752
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