Aiming at a high slope embankment research,through exploration of field geology relief and traffic situation,the lacing retaining wall finite modes of two dimension hierarchy oblique slopes were built.

The determination of stability safety factor of high slope rock-fill embankment using Bishop method;

Studies on structural performance of embankment slopes reinforced by geogrids with model tests;

Based on necessity of erosive protection for embankment slope and deficiency of research on erosion calculation model of slope, the hydraulics particularity of embankment slope is analyzed and the processes of water-erosion of slope are described on energy by the conservation and transform principle of master energy.

Field investigation of soil erosion was conducted on embankment slopes of both Qinhuangdao-Shenyang special line of passenger trains and Jiaozhou-Xinyi railway after precipitation, and factors leading to great difference of erosion degree between the two experimental plots were analyzed.

In order to learn the displacement characteristics of geogrid reinforced embankment with steep slope,according to centrifuge model test and long term in situ observation of geogrid strain,displacement distribution on embankment sections and geogrid strain trends were obtained.