Evaluation model of permafrost thermal stability and thawing sensibility under engineering activity

In order to evaluate the sensible influence of engineering disturbance on frozen soil environment, the evaluating model of permafrost thermal stability and thawing sensibility is proposed. According to the monitor data of frozen soil along Qinghai–Xizang Highway (QXH), the evaluating model of permafrost thermal stability and thawing sensibility is calculated to analyze the relationships among thermal stability and thawing sensibility, mean annual ground temperature (MAGT), permafrost table temperature and seasonal thawing depth. The results show that thermal stability and thawing sensibility can reflect the effect of engineering disturbance on frost environment better.