Fabricated prestressed foundation pit supporting plate

The utility model provides an assembly type prestress foundation pit supporting plate which is used for solving the problems that in the prior art, the workload of foundation pit supporting construction is large, and efficiency is not high. In order to achieve the purpose and other related purposes, the utility model provides an assembly type prestress foundation pit supporting plate which comprises two parallel supporting stand columns, and a plurality of prestress arch-shaped plates are all located between the two supporting stand columns and are vertically arranged in parallel. One end of the prestressed steel cable is fixedly connected with one supporting stand column, and the other end of the prestressed steel cable penetrates through the prestressed arched plate left and right and is fixedly connected with the other supporting stand column. The two supporting stand columns are firstly inserted into soil, then the soil between the two supporting stand columns is dug out, then the prestressed arch plate i