Energy Saving Calculation Method for Closed Controlled Circulation Ventilation in Extra-long Highway Tunnel
A technology for circulating ventilation and highway tunnels, which is used in mine/tunnel ventilation, earthwork drilling, design optimization/simulation, etc. It can solve problems such as urban planning constraints, high ventilation costs for extra-long tunnels, and energy-saving calculation methods that have not yet been formed.
Active Publication Date: 2020-07-28
HUNAN UNIV OF SCI & TECH
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Problems solved by technology
However, problems such as the high cost of ventilation for extra-long tunnels and the location of shaft excavation restricted by geology and urban planning are still prominent, and the energy-saving calculation method for closed-type controllable circulation ventilation of extra-long highway tunnels has not yet been formed.
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[0087] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0088] see figure 1 , figure 2 The closed-type controllable circulating ventilation system of the extra-long highway tunnel includes a circulating air duct 5 arranged in the bypass tunnel of the tunnel and parallel to the tunnel. Between the tunnel entrance 1 and the induced air section 3 of the circulating air duct 5 is the upstream tunnel 2, and the circulating air Between the ejection section 7 of the road 5 and the tunnel exit 9 is the downstream tunnel 8, the circulating air duct 5 communicates with the tunnel through the air induction section 3 and the ejection section 7 at both ends, and the tunnel is between the upstream tunnel 2 and the downstream tunnel 8 A short path 10; a dust collector 11 is arranged in the circulating air duct 5, the 4 is the dust collector inlet, and the 6 is the dust collector outlet.
[0089] When the prese...
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The invention discloses a closed type controllable circulating ventilation energy saving amount calculating method for an extra-long highway tunnel. The method mainly includes the steps of firstly, determining a total consumed power calculating formula of a closed type controllable circulating ventilation system; secondly, determining a total consumed power calculating formula in a conventional air supply and discharge vertical shaft ventilating mode; thirdly, calculating the energy saving amount of the controllable circulating ventilation system compared with the conventional air supply and discharge vertical shaft ventilating mode. Under the circumference of determining the air discharge flow and air volume, main branch friction air resistance coefficient and effective air volume coefficient of the conventional air supply and discharge vertical shaft ventilating mode, the effective air volume coefficient of the given closed type controllable circulating ventilation system, the dust purification efficiency of a dust collector and the equivalent coefficient of a circulating air duct friction air resistance coefficient, the ventilation power consumption value saved for implementingthe closed type controllable circulating ventilation system can be calculated, and therefore the pre-evaluation implemented by the controllable circulating ventilation system can be rapidly and quickly completed.
Description
technical field [0001] The invention belongs to the technical field of disaster prevention and reduction in tunnels, and in particular relates to a method for calculating energy saving for closed-type controllable circulation ventilation of super-long highway tunnels. Background technique [0002] Highway tunnels are long and narrow spaces that are semi-submerged or shallowly buried. The treatment of pollutants such as smoke and dust generated by cars driving in tunnels has always been an important issue of concern to the industry. Generally, mechanical ventilation is used to dilute pollutants such as smoke and CO, and the dirty air is discharged to the environment outside the tunnel, and it belongs to the direct current system scheme. The ventilation system of long-distance or extra-long-distance road tunnels must cooperate with ventilation shafts to meet the wind demand for diluting pollutants in the tunnel. The ventilation of extra-long highway tunnels specifically invol...
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IPC IPC(8): E21F1/00G06F30/20
CPCE21F1/003G06F30/20
Inventor 李轶群陈世强王海桥郝小礼陈永平李石林
Owner HUNAN UNIV OF SCI & TECH