Curvilinear tunnel critical wind speed computing method
A technology of critical wind speed and calculation method, which is applied in mine/tunnel ventilation, calculation, earth-moving drilling and other directions, can solve problems such as the calculation formula of critical wind speed in tunnels without curves, and is beneficial to personnel evacuation, fire safety and economic benefits. Good, fast fire response effect
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[0025] The present invention will be further described below in conjunction with the accompanying drawings.
[0026] Implementation example 1:
[0027] Such as Figure 1 to Figure 3 As shown, in view of the fact that the longitudinal ventilation wind speed in the existing straight tunnel is too conservative and there is no clear formula for calculating the critical wind speed of the curved tunnel, the purpose of really obtaining the "simple calculation formula for the critical wind speed under different curve radii" is specifically designed as follows:
[0028] Relying on the shield-machined circular tunnel of Line 7 of the third-phase subway project in Shenzhen, the maximum radius of the curve between Shangsha Station and Shawei Station is 1500m, the diameter of the outer contour of the tunnel is 6m, and the diameter of the inner contour is 5.4m.
[0029] Use revit2014 to build a 150m-long tunnel with a cross-section such as 1) the actual shield circular tunnel minus the bal...
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