Abstract: A new type of ripped-stone embankment proposed by author,was an awning-ripped stone embankment utilizing man-made natural convection of heat transfer as a positive measure for cooling embankment.In this paper,natural convection of heat transfer in ripped-stone layer was described for the heat transfer in large porous media.Numerical tests were implemented to investigate the reasonable value of embankment height,thickness of ripped-stone layer and the particle size of the ripped-stone.The optimizing and designing principle were then suggested: ⑴The new proposed embankment type not only was beneficial to thermal stability of embankment in high temperature areas but also could prevent non-uniform settlement resulted by different temperature between two sides of the embankment and avoid porous filling of the sands by wind.⑵It was suggested that embankment height could be 3⁷ m and thickness of ripped-stone layer be 3⁵ times of partical size of ripped-stone.