图 1  城市隧道分岔段火灾实验平台

Figure 1.  Experimental platform for fires in urban bifurcated tunnels

图 2  热电偶排列示意

Figure 2.  Thermocouple arrangement

图 3  不同纵向通风下主隧道温度场分布

Figure 3.  Temperature field distribution in main tunnel with different longitudinal ventilation

图 4  不同纵向通风下分岔隧道温度分布

Figure 4.  Temperature distribution in bifurcated tunnel with different longitudinal ventilation

图 5  不同空气幕射流速度下$v^{2} / (g H)$与$\Delta T_{\max } / T_{\infty}$之间的关系

Figure 5.  Relationship between $v^{2} / (g H)$ and $\Delta T_{\max } / T_{\infty}$at different jet velocities of air curtain

图 6  ${v_{{\mathrm{air}}}}/{(gH)^{1/2}}$与系数m和n之间的关系

Figure 6.  Relationship between${v_{{\mathrm{air}}}}/{(gH)^{1/2}}$and coefficients m and n

图 7  不同空气幕射流速度下无量纲预测与实验的最大温升对比

Figure 7.  Comparison of dimensionless predicted and experimental maximum temperature rise at different jet velocities of air curtain

图 8  不同空气幕角度下${{{v^2}} \mathord{\left/ {\vphantom {{{v^2}} {(gH)}}} \right. } {(gH)}}$与${{\Delta {T_{\max }}} \mathord{\left/ {\vphantom {{\Delta {T_{\max }}} {{T_\infty }}}} \right. } {{T_\infty }}}$的关系

Figure 8.  Relationship between $v^{2} / ({gH})$and $\Delta T_{\max } / T_{\infty}$at different angles of air curtain

图 9  sin A与系数α和β之间的关系

Figure 9.  Relationship between sin A and coefficients α and β

图 10  不同空气幕角度下无量纲预测与实验的最大温升对比

Figure 10.  Comparison of dimensionless predicted and experimental maximum temperature rise at different angles of air curtain

图 11  不同空气幕厚度下$v/{(gH)^{1/2}}$与${{\Delta {T_{\max }}} \mathord{\left/ {\vphantom {{\Delta {T_{\max }}} {{T_\infty }}}} \right. } {{T_\infty }}}$之间的关系

Figure 11.  Relationship between $v/{(gH)^{1/2}}$ and $\Delta T_{\max } / T_{\infty}$at different angles of air curtain

图 12  T/H与系数a、b和c之间的关系

Figure 12.  Relationship between T/H and coefficients a, b, and c

图 13  不同空气幕喷射宽度下无量纲预测与实验的最大温升对比

Figure 13.  Comparison of dimensionless predicted and experimental maximum temperature rise at different jet widths of air curtain