TriAx geogrid has unique physical and mechanical properties, when it is used as reinforcement material for imperfect trench method, it can reduce the earth pressure on the crown of high embankment culvert and obtain good economic and social benefits. 新型三向土工格栅具有独特的物理力学性能,将其用作加筋材料对高填方涵洞进行加筋减载,可获得良好的经济效益和社会效益。