珲乌高速公路冻土原状样融沉特性试验研究

Experimental Study on the Thaw Settlement Properties of Original Frozen Soil Sample in Hunwu Expressway

冻土融沉是目前工程建设中危及建筑物安全稳定的最大问题。文章依托黑龙江省珲乌高速公路,对其沿线勘察钻孔所取冻土原状样进行融沉压缩试验,通过对数据进行回归分析,研究土样的融沉特性与含水率、干密度之间的关系,并结合实际工程经验提出防治措施,为冻土区高速公路的修建、运营及维护提供参考依据。

The thaw settlement of frozen soil is the biggest problem that threatens the safety and stability of buildings in current engineering construction.Based on Hunwu Expressway in Heilongjiang Province,this article conducted the thaw settlement compression test on the original frozen soil same taken from the surveyed boreholes along the route,and,through regression analysis of the data,it studied the relationship between the thaw settlement characteristics of soil samples and the water content and dry density,then,combined the actual engineering experience,it proposed prevention measures,thereby providing reference for the construction,operation and maintenance of expressways in permafrost regions.