地铁区间隧道竖井送风有效风量研究*

为得到地铁区间隧道竖井送风有效风量的无量纲计算模型，通过推导地铁区间隧道竖井送风有效风量的无量纲公式，并采用数值模拟方法明确竖井送风有效风量与火源功率、火源距离、阻塞比和竖井送风量之间的量化关系。结果表明:火源功率、火源距离与竖井送风有效风量之间不存在函数关系；阻塞比对竖井送风有效风量影响显著，随着阻塞比的增大，有效风量逐渐减小，单侧列车停靠时，无量纲有效风量Qe*与阻塞比β呈-1.08次方减小关系，两侧列车停靠时，无量纲有效风量Qe*与阻塞比β呈-0.22次方减小关系；有效风量随竖井送风风量的增大逐渐增大，且有效风量增大比例高于送风风量，单侧列车停靠时，无量纲有效风量与无量纲送风风量呈1.11次方增大关系，两侧列车停靠时，无量纲有效风量与无量纲送风风量呈1.07次方增大关系。

Study on effective air volume of shaft air supply in subway running tunnel

In order to obtain the dimensionless calculation model of the effective air volume of the subway tunnel shaft ventilation,the dimensionless formula of effective air volume of the shaft air supply in subway running tunnel was derived,and the numerical simulation method was used to clarify the quantitative relationship between the effective air volume of shaft air supply and the fire source power,fire source distance,blockage ratio and shaft air supply volume.The results showed that there was no functional relationship between the fire source power,fire source distance and the effective air volume of shaft air supply.The blockage ratio had significant influence on the effective air volume of shaft air supply,and the effective air volume decreased gradually with the increase of blockage ratio.When the train stopped on one side,the dimensionless effective air volume Qe* presented a -1.08 power decreasing relationship with the blockage ratio β,and when the trains stopped on both sides,the dimensionless effective air volume Qe* presented a -0.22 power decreasing relationship with the blockage ratio β.The effective air volume increased gradually with the increase of shaft air supply volume,and the increase proportion of effective air volume was higher than that of air supply volume.When the train stopped on one side,the dimensionless effective air volume presented a 1.11 power increasing relationship with the dimensionless air supply volume,and when the trains stopped on both sides,the dimensionless effective air volume presented a 1.07 power increasing relationship with the dimensionless air supply volume.