摘要
由于平硐开拓的矿山各平硐口高程变化较大,导致各硐口气温、气压各不相同,加之高山气候条件,各硐口所受影响更为明显,这种自然风压变化极易造成矿井井下风向、风量的不稳定,致使矿井通风困难。为解决四川省内某高山环境平硐开拓矿山受自然风压影响较大、回风线路不畅等问题,研究制定出2种可行的通风技术方案,方案一为东、西两翼对角抽出式通风方式,方案二为东、西两翼进风、中央回风通风方式,并对2种方案的通风阻力、工程量、设备投资及运行成本等关键技术经济指标进行计算和对比。结果表明,方案一在通风阻力、工程量及运行能耗等主要方面均占优势,方案二仅设备投资较方案一少,综合考虑通风系统技术层面、投资建设成本周期及节能等方面,确定方案一为最佳通风技术方案。
The elevations of the flat tunnel openings of the mines developed by the flat tunnels are different,resulting in different temperatures and pressures at each tunnel opening.And the alpine weather conditions make the impact more obvious.The changing natural wind pressure is very easy to cause the instability of the wind direction and air volume in the underground mine,which makes it difficult to ventilate the mine.A mine developed by a flat tunnel in an alpine environment in Sichuan Province is greatly affected by natural wind pressure,and there are still problems such as poor return air lines.For this reason,two ventilation technical solutions have been formulated.The first option is a ventilation method based on the diagonal extraction of the air shafts on the east and west wings,and the second option is the ventilation method of air intake from the east and west wings and the central return air.The technical and economic indicators of the two schemes are compared,including ventilation resistance,engineering quantity,equipment and operating costs.It turns out that considering the ventilation effect,investment cost and energy saving,the first one is the best ventilation solution.
作者
李亚俊
潘文鑫
李印洪
钟生元
LI Yajun;PAN Wenxin;LI Yinhong;ZHONG Shengyuan(Hunan Nonferrous Metallurgical Labor Protection Research Institute;China Nuclear Engineering Consulting Co.,Ltd.)
出处
《现代矿业》
CAS
2020年第10期170-172,共3页
Modern Mining
关键词
高山环境
通风系统
自然风压
alpine environment
ventilation system
natural wind pressure
