Foundation pit excavation method for soft plastic ground

The invention provides a foundation pit excavation method for the soft plastic ground, and relates to the technical field of underground engineering. Through a earth excavation method of timely pavingto form a hardened layer on an excavation surface, the hardened layer can meet the requirement of carrying capacity of construction machinery operation, and the stability of a slope surface in the process of slope laying can be enhanced, the damage of soil flowing deformation to the excavation surface can be effectively controlled, so that the stability of the underlying soil free face of an excavator is maintained, smooth earth excavation construction is realized, and the technical problems in the prior art, such as the abnormal operation of field construction machinery and destruction of the foundation pit excavation surface caused by the soil flowing deformation are alleviated. According to the foundation pit excavation method for the soft plastic ground, a feasible construction methodcan be provided for earth