Assessment And Improvement Of The Mine Ventilation System Of Fankou Lead & Zime Mine

Firstly, this paper briefly summarized the mine ventilation theory and technology, the mine ventilation network analysis and optimization, the mine dust prevention and airflow cleaning, the mine ventilation energy reduction, etc. Then, the geology conditions, mining methods, mining development and ventilation system of Fankou Lead & Zinc Mine were described. The significant meaning of conducting the in-situ measurement, assessment and improvement of the Fankou mine ventilation was pointed out. Based on a detailed investigation on the mine ventilation system, a great number of data were achieved. Accordingly, some important conclusions and proposals for improving the mine ventilation system were put forward.The main problems of Fankou mine ventilation system, particularly the deep part of ore deposits, are in following aspects, e.g. less total inlet airflow rate, high temperature, big energy consumption, higher air velocity in cage shaft, dust pollution in main slope and ore pass, diesel exhaust, etc. After analyzing these existing problems, several effective measures were selected and applied. These approaches are as below: cleaning the inlet airflow by spraying, developing new inlet airflow shaft, increasing the air flow-rate for working faces, reducing air temperature, adjusting the operation time and operating conditions of main fans and so on. After using above technical measures, more than two millions kW energy was reduced. The dust concentration in main slope is below the threshold limit value by spraying. The hazard content of diesel exhaust gases releasing by the LHD were reduced effectively through adding some additives in fuel. At last, the paper also provided chief conclusions of the total research project.