The stability of a reinforced slope is influenced by not only the Earthquake Influence Coefficient

and cohesive strength

friction angle and the gravity of the filled soil

but also the horizontal width and the length of the geogrid.Through calculating the safety factor of a reinforced slope

this article analyzes how much these influential parameters will affect the slope’s stability

which can be summarised as follows: the earthquake influence coefficient

—1.47;the cohesive strength of the filled soil

0.014;the friction angle

0.039;gravity

—0.01;the horizontal width of the geogrid

—0.02;the length of the geogrid

0.033.This study provides theoretical support for the slope design

which is of substantial importance in engineering practice.