路基是高速铁路安全系统的关键和薄弱环节 ,建在软土上的高填路堤边坡是否稳定 ,更是直接关系到路基乃至整个高速铁路系统的安全 ,采用桩—网复合地基形式修建高路堤是一个好办法 ,这种路堤形式尚不多见。笔者结合其特点 ,从理论上提出了一种新的边坡安全实用计算方法 ;讨论了影响边坡安全的主要因素 ;验证了这一计算方法的合理性 Subgrade is the key and weak link of high-speed railway safety system. Whether the high embankment slope built on soft soil is stable or not is directly related to the safety of the subgrade and even the whole high-speed railway system. The construction of high embankment using pile-net composite foundation Is a good way, this form of embankment is still rare. In combination with its characteristics, the author put forward a new practical method of slope safety in theory, discuss the main factors affecting slope safety, and verify the rationality of this method