土条状坑壁的土体宽度有限,而经典土压力理论却是建立在半无限土体的假定上,因此经典土压力理论的应用受到限制。本文参照库仑土压力理论的基本假定,建立了土条主动土压力的计算方法,提出了临界宽深比ξcr的概念,并结合深圳一工程实例,探讨了土条土压力的分布规律以及在工程中的应用。 The width of the soil of the earth-like pit wall is limited, but the theory of classical earth pressure is based on the assumption of semi-infinite soil, so the application of classical earth pressure theory is limited. Based on the basic assumption of Coulomb's theory of soil pressure, this paper established the calculation method of active earth pressure of soil and proposed the concept of critical width-depth ratio ξcr. Combined with an example of a project in Shenzhen, In the application.