China suffers from various disasters for a long time, such as flash floods, debris flows and so on. And China has done a lot of work to control floods. Flash floods and debris flows always occur in mountainous areas. How to move people to safer places? A very important task is to carry out disaster prediction. This report will introduce a new solution for flash floods and debris flows, which is mountain disaster simulation and risk assessment system. The system provides basic data and risk assessment model which are needed for disaster risk analysis, and a variety of online risk assessment tools. In this way, risks can be assessed and risk mapping can be carried out. This system has been used to evaluate disaster risks of the whole Sichuan-Tibet railway, and the evaluation results are with great reference value.
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