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《Gold》 2018-01
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Research on anti-freezing optimization of ventilation systems for vertical shafts in severely cold areas and its application

Feng Fukang;Yan Peng;Wang Yiyong;Tang Xueyi;Dong Maosheng;Guo Shulin;Changchun Gold Research Institute Co.,Ltd.;Jilin Haigou Gold Mining Co.,Ltd.;  
Shaft icing,cage jamming and pipe cracking resulting from cold weather are among the major risks affecting safe production of mines. Based on investigations of research at home and abroad,the paper made statistical analysis of atmospheric temperature for one year,analyzed the hazards of shaft icing,classification of anti-freezing levels and influence factors of shaft freezing,and with the deep analysis of the mechanism of geothermal preheating technology and the current status of reverse-wind anti-freezing in mine shafts,proposed modification and optimization plans for vertical shaft anti-freezing fit for Haigou Gold Mine. The implementation results show that the anti-freezing effect in auxiliary shafts is good: the temperature in vehicle yard remains above 2 ℃. The high-efficient functioning of ventilation system eliminates potential safety risks due to chaotic ventilation from the root up. The resistance to disasters and anti-freezing capability of mine shafts are greatly improved.
【Fund】: 吉林省科技发展计划资助项目(20160204009SF)
【CateGory Index】: TD724
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