are described. And according to the mechanical properties and hydraulic performances of the subsoils and the behaviors of geosynthetics
the varions kinds of geosynthetics such as composite geotechnical membrane
asphaltic glass-woven fabrics
asphaltic cottonglue fabrics etc. are adopted to prevent mud boil at roads so as to make the roads in good conditions. The engineering practice shows that these measures can decrease the frozen phenomena of subsoil and they are effective methods for preventing mud boil at roads.