由于现场取土困难，或者条件限制不便做土的力学指标试验时，挡土墙设计中往往凭经验取一个综合内摩擦角φ０来代替墙背粘性填土的指标Ｃ、φ值，并按无粘性土的有关公式计算土压力。这样必然造成土压力计算值的“失实”，对于高挡土墙尤为严重。如果设计的挡土墙稳定系数仍取［Ｋｃ］＝１．３、［Ｋ０］＝１．５，那么很可能会带来不良的后果。针对这种情况，本文通过计算，分析了稳定系数［Ｋｃ］、［Ｋ０］的主要影响因素，提出了较为合理的取值范围。 Due to the difficulty of taking soil in the field or the inconvenience of soil mechanics index test, the design of retaining wall often adopts an integrated internal friction angle of φ0 instead of the index C, φ of wall-filling adhesive filling, Soil clay is calculated using the formula for clay. This will inevitably lead to the “false” calculation of earth pressure, especially for high retaining walls. If the design of retaining wall stability factor still take [Kc] = 1.3, [K0] = 1.5, then it is likely to have adverse consequences. In response to this situation, the main influencing factors of the stability coefficients [Kc] and [K0] are analyzed and calculated, and a reasonable range of values ​​is proposed.