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The the Yunnan Baoshan to Tengchong highway , located in Tengchong - gengma \The seismic zone in Yunnan earthquake damage the largest seismic zone . At the same time , western red mudstone layer permeable weak , strong hydrophilic , water softening ( or expansion ) , dehydration easy to collapse ( or contraction ) , low intensity, is a poor engineering properties of rocks . Therefore, the seismic stability of the region slope structure has a strong practical significance . This paper firstly summarizes the slope seismic stability theory , the history of western Yunnan earthquake , red - layer soft rock embankment engineering properties research , analyzed the seismic stability of internal and external factors affect the red layers embankment , embankment structure characteristics and seismic properties . Secondly, with the ANSYS finite element software , a detailed analysis of the quantitative impact of seismic wave parameters and embankment structure parameters on the seismic stability of embankment , including in the embankment height , slope angle , slope morphology , different seismic waves incident angle and different seismic intensity under the conditions of the dynamic response of the embankment structure , obtained the power of the red layers embankment structure under seismic action in response to the law . Finally, engineering practice , the to embankment stability factor as the center , using ANSYS software combined with the strength reduction theory , simulation analysis of seismic stability of the slope in the plastic zone to carry out and the nodal displacements mutation - based criteria . Embankment stability factor of the slope height , slope , seismic wave incidence angle and other factors , draw a red bed in West region embankment structures in different seismic intensity , seismic wave angle of incidence as well as the conditions of the embankment slope value corresponding critical slope high degree of relying on the project and similar projects embankment slope seismic design provides a reference. This paper has been significant social development projects in Yunnan Province, Yunnan Baoshan to Tengchong highway technology and culture demonstration project \
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