Optimization And Improvement Of Ventilation System Of Z Uranium Mine In Northern Guangdong

Mine ventilation system is a dynamic system that consists of different ventilators and ventilation networks.The main tasks of mine ventilation system contain:(1)delivering appropriate quantity of fresh air to the underground working sites for the sake of personnel breaths;(2)diluting and removing all kinds of poisonous and harmful gases and dust;(3)lowering the environmental temperature at working sites for creating comfortable climate conditions;(4)especially,deploying and controlling the airflows according to the needs of disaster relief when catastrophe happens.With the increasing of mining depth of underground mine,the airflow route gets to be longer and more complicated,more and more quantity of airflow is then required.What's worse,the resistances of mine airflow increase sharply,thus in most cases the original ventilation system cannot satisfy the necessaries for production safety.Therefore,optimization study of mine ventilation system has important practical significance,since it is one of the most principal means to guarantee the mining safety and production efficiency.This thesis is based on the practical situations of Z mine of a uranium corporation in northern Guangdong Province,through the analyses of in-situ measuring data and current status of ventilation system of Z mine,the major problems of this mine's ventilation system have been found out.The ventilation plan of Z mine has been drawn on the basis of analyzing the measuring data.After that,aiming at recent and middle-term plan of exploitation layout of Z mine,productive task and problems needed to be resolved as well as the improving measures for this mine have been proposed in line with the characteristics of Z mine's ventilation system.Thereafter,several feasible programs have been drawn up according to the characteristics of Z mine ventilation system and related improving measures,comprehensive analysis of the ventilation effect and economic cost of each program have been made subsequently.Through the different approaches like technical transformation,equipment replacement,ventilation network optimization,management education,standard management and so on,the integrated optimization scheme for Z mine's ventilation system has been determined.The final scheme meets the needs of continuity and effectiveness.