Abstract
The Qinghai-Tibet Railway goes through continuous high altitude permafrost regions on the Qinghai-Tibet plateau. The melting of ice in permafrost will lead to weaken the road foundation, cause the roadbed to collapse and other adverse effects. In order to obtain the detailed change information of the permafrost, understand climate change process and relationship of subgrade stability and permafrost changes, we discussed the 44 different forms of subgrade monitoring sites established to monitor the ground temperature and the roadbed deformation and a visualization and analysis software of permafrost change process to analyze the long-term monitoring data in this paper. The system offers the basic data for further permafrost researching and for scientific basis of subgrade stability early warning. And it also provides a new research idea for geo-data visualization and analysis.
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