“…The single factor analysis method is used to study the effects of inverted T-type retaining wall structure dimensions and mechanical parameters of filling, in which the width of the heel bottom plate b 1 , the width of bottom plate b 3 , the bottom plate thickness H 2 , the soil–wall interface element reduction coefficient K, the soil interface friction angle φ and the soil cohesion C are selected influencing factors for the failure characteristics of sliding surface and the earth pressure distribution law of retaining wall in active limit state. Geometric dimensions of the retaining wall and mechanical parameters for working conditions are shown in Table 2 , in which the retaining wall’s height H = 6m, the wall stem is entirely vertical with a width of b 2 = 0.5m, the buried depth at the bottom of the wall D is always greater 0.5m than the bottom plate thickness; a correlation of the investigated range of soil parameters to conventional values for retaining wall design would be insightful; the values of soil parameters are determined according to the engineering geological manual on soil properties [ 28 ] and other relevant retaining wall papers [ 29 – 32 ]. In Group 1, the wall heel width b 1 is 1m, 2m, 3mand 4m, respectively; In Group 2, the wall toe width b 3 is 1m, 2m, 3m and 4m, respectively; In Group 3, the bottom plate thickness H 2 is 0.5m, 0.75m, 1.0m and 1.25m, respectively; In Group 4, the soil–wall interface element reduction coefficient K is 0, 0.333, 0.666 and 1, respectively; In Group 5, the soil cohesion C is 5KPa, 15KPa, 25KPa and 35KPa, respectively; In Group 5, the soil internal friction angle φ is 10°, 20°, 30° and 40°, respectively.…”