China Coal Research Institute Company Limited Beijing Research Center of Mine Safety Engineering and
Technology

为了克服西北地区大型井田逃生距离长、难以保证遇险人员安全撤出的问题,提出了避难硐室结合大直径逃生通道的新型避险逃生方式。为形成硐室和通道内合理的通风系统,采用流体力学和矿井通风理论分析避难硐室需风量,得到通道内的风速为0.8 m/s;选取标准压风管路,并计算压风管出口压力,依据伯努利方程将减压装置出口压力限定在0.12~0.30 MPa,以保证与地面的压差克服通风阻力。计算结果表明:通道内的风速和减压装置出口压力均满足规定,又能够形成有效的通风系统。

In order to overcome a long escape distance in a large minefield and hard to ensure personnel in danger to safe withdraw in the northwest area,a new refug e mode with a combination of the refuge chamber and a large diameter escape channel was provided. In order to form a ventilation system in the chamber and channel,the fluid mechanics and the mine ventilation theory were applied to analyze the ventilation volume required by the refuge chamber. The air velocity within the channel was 0.8 m/ s. A standard compressed air tub was selected. The outlet pressure of the compressed air tube was calculated. Based on Bernoulli equation,the outlet pressure of the p ressure reduction device was limited at0. 12 ~ 0. 30 MPa to ensure the surface pressure difference could overcome the ventilation resistance. The calculation results show ed that the air velocity in the channel and the outlet pressure of the pressure reduction device both could meet the stipulation and could form an effective ventilation syste n.