發(fā)布時(shí)間：2019-08-17 12:36

【摘要】：干寒區(qū)"鍋蓋效應(yīng)"會(huì)引起路基、道基上部含水率增加,進(jìn)而誘發(fā)路基、道基強(qiáng)度降低及鹽脹等問(wèn)題,最終導(dǎo)致路面、道面破壞,影響正常通車、通航。干寒區(qū)"鍋蓋效應(yīng)"水分來(lái)源主要為冷凝或冷凍作用,基于這一機(jī)理認(rèn)識(shí),針對(duì)干寒區(qū)"鍋蓋效應(yīng)"的致災(zāi)機(jī)理進(jìn)行闡述;結(jié)合蘭州中川機(jī)場(chǎng)、敦煌機(jī)場(chǎng)兩個(gè)工程案例進(jìn)行災(zāi)害的成因分析和討論,提出了災(zāi)害的防治建議。
[Abstract]:The "pot cover effect" in dry and cold region will lead to the increase of moisture content in the upper part of the roadbed, and then induce the subgrade, the strength of the road foundation and salt expansion, etc., which will eventually lead to the destruction of the pavement and pavement, and affect the normal traffic and navigation. The water source of "pot cover effect" in dry cold region is mainly condensation or freezing. Based on this mechanism, this paper expounds the disaster mechanism of "pot cover effect" in dry cold area, analyzes and discusses the causes of disasters combined with two engineering cases of Lanzhou Zhongchuan Airport and Dunhuang Airport, and puts forward some suggestions for disaster prevention and control.
【作者單位】： 北京航空航天大學(xué)交通科學(xué)與工程學(xué)院;
【基金】：國(guó)家“973計(jì)劃”項(xiàng)目(2014CB047006) 國(guó)家自然科學(xué)基金項(xiàng)目(11272031)
【分類號(hào)】：V351.11
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本文編號(hào)：2527785