下向进路分层无分段充填开采通风系统改进
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摘要
针对某金矿现场采用的下向进路分层无分段充填采矿法通风系统所存在的问题,对原有通风系统进行了技术改造,研发了一种新型的"充填回风井封堵板加可伸缩刚性风筒"辅助通风装置,并在1111#采场进行了工业性试验。结果表明:通风系统改造后,每个作业循环除尘时间缩短了0.9 h,节约新鲜风32 99.4 m3;解决了下向进路分层无分段充填采矿过程中存在的工作面新、污风混杂,通风效果差等问题,提高了采场工作效率。该研究成果可为类似条件下的金属矿山通风系统改造提供借鉴。
According to the existing problems of ventilation system of slicing and back-fill mining without sub-level in downward drift in a certain gold mine,the original ventilation system is modified. A new type of"back-fill return air shaft plugging plate with expansible rigid fan tube"auxiliary ventilation device is researched and developed,and then is applied into1111#stope for the industrial tests. The results show that: after the ventilation system improved,the time of dust removal at each operation cycle is shortened to 0. 9 h,and 32 99. 4 m3 of fresh air can be saved. The problems in the process of back-fill mining without sub-level in downward drift layer are solved,such as the confounding of fresh and dirty air in the working face,and the poor ventilation effect,and the working efficiency of the stope is improved. The research results could provide theoretical guidance for improving the ventilation system of the metal mines under the similar condition.
According to the existing problems of ventilation system of slicing and back-fill mining without sub-level in downward drift in a certain gold mine,the original ventilation system is modified. A new type of"back-fill return air shaft plugging plate with expansible rigid fan tube"auxiliary ventilation device is researched and developed,and then is applied into1111#stope for the industrial tests. The results show that: after the ventilation system improved,the time of dust removal at each operation cycle is shortened to 0. 9 h,and 32 99. 4 m3 of fresh air can be saved. The problems in the process of back-fill mining without sub-level in downward drift layer are solved,such as the confounding of fresh and dirty air in the working face,and the poor ventilation effect,and the working efficiency of the stope is improved. The research results could provide theoretical guidance for improving the ventilation system of the metal mines under the similar condition.
引文
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[3]祝启坤,叶镇杰.金属矿山受控循环通风风量计算[J].金属矿山,1997(10):35-38.Zhu Qikun,Ye Zhenjie.Air quantity calculation of the controlled circulation ventilation in metal mines[J].Metal Mine,1997(10):35-38.
[4]柳明明.Ventsim三维通风仿真系统在金属矿山的应用[J].金属矿山,2010(10):120-122.Liu Mingming.Application of Ventsim 3D ventilation simulation system in metal mines[J].Metal Mine,2010(10):120-122.
[5]谭允祯.矿井通风系统管理系统技术与理论[M].北京:煤炭工业出版社,1998.Tan Yunzhen.Management Technology Theory of Mine Ventilation System[M].Beijing:China Coal Industry Publishing House,1998.
[6]陶树银,熊正明,程哲,等.金属矿山矿井通风系统优化研究[J].矿业研究与开发,2012,32(2):58-60.Tao Shuyin,Xiong Zhengming,Cheng Zhe,et al.Study on the optimization of ventilation system of metal mine[J].Mining Research and Development,2012,32(2):58-60.