摘要
掘进作业中产生的粉尘若不能及时地稀释并排出,容易形成积聚现象,对作业人员的身体健康造成极大的危害。研发了一种适合于金属矿山矿用局部通风机风量补给及测定组合装置,并在山东省某金矿-300 m水平探矿穿脉独头作业面进行了试验。结果表明:引入该装置后,随着掘进作业推进,在不变更原局部通风机台数和型号的情况下,通过对风筒内的风压和风量进行可控式补偿,作业面排尘风速始终维持在0.36 m/s左右,满足《金属非金属矿山安全规程》(GB 16423—2020)的相关通风设计要求。该装置实现了局部通风机风量补给和测定一体化,较好地解决了因掘进距离变长、通风阻力增大造成经柔性风筒送达工作面风量减小以及风量测定安全性低、精准度差的问题,对于改善井下作业环境、保障金属矿山独头掘进安全生产具有重要意义。
If the dust generated during excavation operations cannot be diluted and discharged in a timely manner,it is easy to accumulate and cause great harm to the physical health of the workers.A combined device for supplying and measuring the air volume of local ventilation fans suitable for metal mines has been developed and tested on a-300 m horizontal exploration single end mining face in a gold mine in Shandong Province.The test results show that after the introduction of this device,as the excavation operation progresses,without changing the original number and model of local ventilation fans,the dust exhaust wind speed of the working face is always maintained at around 0.36 m/s by controllable compensation of the air pressure and air volume in the air duct,meeting the relevant ventilation requirements of the Safety Regulations for Metal and Non-metal Mines(GB 16423-2020).This device realizes the integration of local ventilation fan air supply and measurement,effectively solving the problems of reduced air volume delivered to the working face through flexible air ducts due to longer excavation distance and increased ventilation resistance,as well as low safety and accuracy of air volume measurement.It is of important significance for improving the underground working environment and ensuring the safety production of metal mine single head excavation.
作者
周伟
李刚
贾敏涛
吴冷峻
纪旭波
林喜村
谢辉
余茂杰
ZHOU Wei;LI Gang;JIA Mintao;WU Lengjun;JI Xubo;LIN Xicun;XIE Hui;YU Maojie(State Key Laboratory of Safety and Health for Metal Mines,Maanshan 243000,China;Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.,Maanshan 243000,China;Shandong Humon Smelting Co.,Ltd.,Yantai 264000,China;Tongling Nonferrous Metals Group Holdings Co.,Ltd.,Tongling 244000,China)
出处
《金属矿山》
CAS
北大核心
2023年第7期153-158,共6页
Metal Mine
基金
“十四五”国家重点研发计划项目(编号:2022YFC2904104)
金属矿山安全与健康国家重点实验室开放基金项目(编号:2021-JSKSSYS-06)。
关键词
矿井通风
局部通风机
风量补给
风压测定
输出风量
mine ventilation
local ventilator
air supply
wind pressure measurement
output air volume
