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本文扼要阐述了开展露天矿通风研究、尤其是进行实验室风洞物理模拟研究的必要性。对露天矿通风模拟风洞的研制作了简介,指出了本风洞所具有的特点。文中介绍了最近完成的二项风洞模拟实验:对大冶露天矿深部开采风流结构及其污染物扩散净化能力进行了模拟研究,发现该矿具有比较独特的三维风流结构;对大爆破后靠自然风力稀释烟尘蘑菇云团所需的停工通风时间,分别完成了以风速 U_0和炸药量 A 为单因素变量的两组试验,揭示了通风时间与地表风速 U_0、炸药量 A_0的本质联系,推导出了通风时间的计算式。
This article briefly describes the necessity of conducting open-air mine ventilation research, especially for the laboratory wind tunnel physics simulation. A brief introduction to the research and development of the open air mine ventilation wind tunnel is given, and the characteristics of this wind tunnel are pointed out. In the paper, the recently completed two wind tunnel simulation experiments are introduced: the wind structure and its diffusion and purification capability of deep mining in Daye Open Pit are simulated and the result shows that the mine has a unique three-dimensional wind flow structure; Two sets of experiments were carried out with wind speed U_0 and explosive A as single factor variables, respectively. The essential relationship between ventilation time and surface wind speed U_0 and explosive amount A_0 was revealed. The calculation of ventilation time.