It has found reasonable ways brought roadbed to resultant stabilization owning to synthesize many factors such as earthiness,hydroclimate,wheather etc to find self weight and external load of roadbed.
Boats could carry heavy weights, but canals could not cross hilly terrain; turnpikes could cross the hills, but the roadbeds could not stand up under great weights.
异是高原冻土地区公路路基发生翻浆的一个重要因子。
了合理的通车碾压工后沉降期及相应制约因素,综合了土质水文、气候天气等制约因素,
路基自重外荷载作用,使路基达到最终稳定的合理途径。
， 
河无法穿
丘陵地形;
路可以穿过山丘， 
