Site investigation and geological exploration of Yardang landform intensive area are carried out

where local railway of Yuqia to Yiliping in Qinghai Province passes through.Based on physical and mechanical test results

a stability analysis of typical Yardang landform is performed by using ABAQUS

and its natural stability is evaluated by a static analysis.According to the results of the train vibration test

dynamic response characteristics

with different slope angle models

are calculated to reveal the failure mechanism of Yardand landform due to train vibration.The research results show that the effect of slope angle is very small for the stability of Yardang landform in natural state.Under train vibration loading

the total displacement and stresses of the slope model are significantly increased;with the increase of the train running distance

the peak acceleration of the Yardang model decreases sharply.As slope angle increases

the acceleration of the slope model is gradually amplified from slope bottom to top.At last

the distance range which has significant influences on the stability of Yardang landform around the line under train vibration loading is put forward

and reasonable slope angle of roadbed is also given.