多年冻土地基隔热保温技术研究综述

Summary of Insulation Technology Foundation at Permafrost Zone

多年冻土上部活动层每年随着季节变化发生冻结、融化,从而引发冻胀、融沉等危害。由于地基土的不均匀性,使得建筑物在冻土区的地基土融化时常常产生不均匀沉降及裂缝。因此,研究多年冻土区水工建筑物地基隔热保温技术对保护多年冻土,防止建筑物发生冻胀及融沉具有十分重要的指导意义。针对冻土区隔热保温措施及技术进行简要归纳,并对我国出现的种类繁多的保温材料进行探讨,从不同冻土基础上应用不同的保温技术进行分类总结,在此基础上对多年冻土区隔热保温技术进行预测和展望。

The upper portion of the active layer of permafrost each year as the seasons change to freezing occurs,thaw,causing frost heave,thaw settlement hazards. Due to the physical properties of soil itself uneven heat,as well as on the geometry of space soil temperature unevenness,so that the building at the time of melting are often uneven soil subsidence and cracks,therefore,in permafrost regions hydraulic building foundation insulation technology for permafrost protection,to prevent the occurrence of frost heave and thaw settlement building has a very important significance. Review of domestic and foreign foundations in permafrost regions to achieve the application of thermal insulation technology,materials,construction programs and research,combined with the existing research results,summarized basic insulation technology research status and development trend in permafrost regions.