高海拔內(nèi)燃牽引特長(zhǎng)隧道運(yùn)營(yíng)通風(fēng)技術(shù)研究
[Abstract]:The purpose of this study is to set up one inclined well and three transverse tunnels in the basin Inla tunnel of Qinghai-Tibet Railway, which is a plateau and an extra-long tunnel with internal combustion in alpine region. The special climatic conditions and the influence of the opening of transverse tunnel on the ventilation of tunnel operation need to be studied urgently. In this paper, based on the detection value of emission index of NJ 2 diesel locomotive and the field observation results of natural wind in the tunnel site area of Lari line, the influence of transverse tunnel on the natural ventilation effect of Panyin tunnel is simulated and analyzed by using RNG k-蔚 turbulence model. The relationship between the natural wind inside and outside the tunnel and the influence of thermal potential pressure on the natural wind in the tunnel are determined. The conclusions are as follows: (1) the recommended scheme of operation ventilation is 2, 4 # horizontal tunnel exhaust wind, Lhasa end, Xigaze end, 3 # horizontal hole inlet wind; (2) combined with disaster prevention, jet fan is selected and fan is installed in the tunnel, and the wind direction should be consistent with the direction of the garage after opening. (3) the results of this study are of positive significance to promote the development of long tunnel operation and ventilation technology in plateau area of China.
【作者單位】: 蘭州交通大學(xué);
【基金】:鐵道部科技開(kāi)發(fā)計(jì)劃項(xiàng)目(20070301)
【分類(lèi)號(hào)】:U453.5
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