Slope supporting layer device for foundation pit, construction method and application of slope supporting layer device

The invention relates to the technical field of slope protection, and provides a slope supporting layer device for a foundation pit, a construction method and application of the slope supporting layer device. The slope supporting layer device comprises implantation nails arranged in a slope of the foundation pit and a tiled layer body arranged on the implantation nails and attached to the slope of the foundation pit; the implanting nails are connected with the tiled layer body in the mode that concrete mortar is tiled and covered on the slope of the foundation pit; the implanting nails are connected with the tiled layer body in a manner that meshes are arranged in the concrete mortar. The slope supporting layer device has the beneficial effects that an interlayer body is arranged in the tiled layer body, the tiled layer body is fixed to the slope of the foundation pit through the implanting nails, laying and covering of the concrete mortar on the slope of the foundation pit are achieved through the tiled laye