透壁式通風(fēng)管-塊石復(fù)合氣冷路基室內(nèi)模型試驗(yàn)研究
發(fā)布時(shí)間:2018-11-27 12:17
【摘要】:為了研究透壁式通風(fēng)管-塊石復(fù)合氣冷路基的降溫效果,針對(duì)年均氣溫約-3.5℃,平均風(fēng)速2.5 m·s-1,主導(dǎo)風(fēng)向?yàn)槲鞅狈较虻母咴h(huán)境條件開(kāi)展室內(nèi)模型試驗(yàn),分析了單一塊石氣冷路基和透壁式通風(fēng)管-塊石復(fù)合氣冷路基的孔隙空氣對(duì)流速度、特征點(diǎn)地溫變化過(guò)程以及模型整體溫度場(chǎng)變化過(guò)程.結(jié)果表明:在透壁式通風(fēng)管的疏導(dǎo)作用下,透壁式通風(fēng)管與塊石層的復(fù)合結(jié)構(gòu)能夠起到強(qiáng)化路基體對(duì)流的效果,復(fù)合路基塊石孔隙中的空氣流速比單一塊石路基提高約20%,由此導(dǎo)致復(fù)合路基模型底部的降溫幅度是單一塊石路基模型的2.2倍.模型整體溫度場(chǎng)表明,復(fù)合路基能夠起到儲(chǔ)存冷量、降低下伏多年凍土地溫的作用.
[Abstract]:In order to study the cooling effect of air-cooled roadbed with permeable ventilation pipe and block stone, an indoor model test was carried out on the plateau environment with average annual temperature of -3.5 鈩,
本文編號(hào):2360729
[Abstract]:In order to study the cooling effect of air-cooled roadbed with permeable ventilation pipe and block stone, an indoor model test was carried out on the plateau environment with average annual temperature of -3.5 鈩,
本文編號(hào):2360729
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