摘要
目前国内在隧洞掘进施工通风中,通常按照掘进通风散烟、瓦斯、有毒气体等最大供风需求量配置风机。然而,在掘进工作面环境条件处于低烟雾、低瓦斯状态时,掘进通风机仍在最大功率下运行,从而造成了极大的能源浪费;同时,风机一但接入电网便处于长期恒速运转,造成“大马拉小车”的现象。事实上,隧洞施工在掘进工作面其所需风量与隧洞长度、隧洞轴线布置、有毒气体浓度、温度等诸多因素有关。因此,对隧洞供风系统进行优化设计与改造,使其具备智能辨识工作面作业环境的功能,实现高效、节能通风意义重大。介绍了对长隧洞施工变频节能通风技术进行的研究。
At present in China,the ventilation fan for tunneling construction is usually configured according to the maximum demand of ventilation such as smoke,gas and toxic gas.However,when the environmental conditions of the tunneling work face are in the state of low smoke and gas,the fan is still running under the maximum power,resulting in a great waste of energy;at the same time,once the fan is powered,it will run at a long-term constant speed,resulting in the phenomenon of“big horse pulling small car”.In fact,the air volume required for tunnel construction in the tunneling work face is related to the tunnel length,tunnel axis layout,toxic gas concentration,temperature and many other factors.Therefore,it is of great significance to optimize the design and transformation of the tunnel air supply system so as to make it have the function of intelligent identification of the working environment of the working face and realize efficient and energy-saving ventilation.This paper introduces the study of frequency conversion and energy-saving ventilation technology in long tunnel construction.
作者
曹优兰
CAO Youlan(Sinohydro Bureau 7 Co.,LTD,Chengdu,Sichuan,610213)
出处
《四川水力发电》
2019年第6期52-56,共5页
Sichuan Hydropower
关键词
长隧洞
施工
变频
通风
华蓥山隧道
long tunnel
construction
frequency conversion
ventilation
Huayingshan Tunnel
