【摘要】 通过调查 30 1国道博～牙段的湿地冻土环境 ,对湿地多年冻土路段 ,提出了 6种加强和改良地基路基的处理方案 ,测试了地温、地表沉降、孔隙水压力和土层分层沉降及EPS材料的特性 ,研究了铺设EPS板对地温的影响。结果表明EPS板可以减少地表向深层的热流量、减少地下多年冻土层上限的下移、减缓多年冻土层的消融 ,保持道路的稳定更多还原

【Abstract】 Through the examination of the environment of wetland perennially frozen soil in the Bo\|Ya section of national highway 301 six types of soil treatment methods have been presented.The earth temperature,surface settlement, pore water pressure, the settlement in layers and the characteristic of EPS material are tested, and the effect of EPS boards on earth temperature is also studied. It is shown that the heat flow from earth surface to deep layer can be lower by using EPS boards. The go\|down movement of the upper limit of perennially frozen soil layer can be reduced, and the frost boil of the soil can be decreased.更多还原