By now

most reinforced soil wall filled by sands can work successfully

but when filled by loess

mid-low liquid limit and high liquid limit clay

the reinforced soil wall can not work naturally. In this paper

systematic direct-shear tests in large direct-shear apparatus were carried out for the clay reinforced by geobelt under different normal stresses and water contents. Based on the test results

one destroyed reinforced soil wall created in Nanjing City of Jiangsu Province is analyzed under design condition and work condition by finite element method. Based on the calculation

the crack line of flexible reinforcement soil wall is analyzed; and some important failure reasons are found and the some essential advise and measures for the clay-filled reinforced earth wall are also brought forward

which is very useful to design and research in the future.