降低井下宣传牌板局部风阻对策探讨

建立了井下巷道内常用的棱台、半圆柱、棱柱三种形状宣传牌板局部风阻计算模型,通过能量守恒方程验算,提出了降低局部通风阻力的措施建议。研究结果表明,在相同条件下,半圆柱式和棱柱式宣传牌板所产生的通风阻力明显小于棱台式宣传牌板所产生的通风阻力,并且半圆柱式效果要优于棱柱式。

Discussion on Decreasing Local Wind Resistance of underground Propagation Plate

Based on the check of energy conservation equation,the paper puts forward measures of reducing local ventilation resistance by establishing a local wind resistance calculation of three types of board,which is commonly used in underground roadway,such as prism, semi-cylinder and prism.Research indicated that under the same conditions,the ventilation resistance produced by semi-cylindrical publicity boards and prismatic publicity boards is significantly less than the ventilation resistance produced by prism-type publicity boards,and semi-cylindrical effect is better than the prism.