试验测试了EPS材料的材料特性,调查了301国道博克图-牙克石段的湿地多年冻土环境,勘察了湿地多年冻土路段,设计了3种铺设EPS板的加强和改良地基路基的设计方法并且实施,设计了地温、孔隙水压力、地表沉降和土层分层沉降的测试布置,测试了铺设EPS板对地温的影响。EPS板可以起到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。 The material properties of EPS material were tested. The permafrost environment of the 301 national highway in Bocku-Yakushi section was investigated, and the permafrost sections in wetland were surveyed. Three design methods for strengthening and improving the subgrade were designed And the design of the ground temperature, pore water pressure, surface subsidence and settlement of the soil settlement test arrangements, testing the impact of laying EPS board on the ground temperature. EPS board can reduce the surface to the deep heat flow, reduce the upper limit of permafrost down underground, reduce permafrost ablation, to maintain the stability of the road.