MONITORING AND STABILITY SIMULATION ANALYSIS OF A CERTAIN EXPRESSWAY SLOPE
Taking the landslide disease of K303+460～K303+590 section of a expressway as the object,combined with on-site investigation and deep horizontal displacement monitoring,the main factors of the landslide were analyzed,and the Midas GTS NX finite element software was used to simulate the stability of the slope under rainfall infiltration.The results show that the landslide in this section is the result of the comprehensive effect of stratigraphic lithology,geological structure,super precipitation and cutting excavation during highway construction.The simulation shows that under the action of heavy rainfall for three consecutive days,the safety factor of the slope gradually decreases,from 1.289 in the natural state to 1.159,and the safety factor decreases by 10.1％after three consecutive days of rainfall,and the slip zone gradually expands to the bottom of the slope.
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