Construction method for soil nailing wall support encountering gravel layer

The invention relates to a construction method for a soil nailing wall support meeting a gravel layer. The construction method comprises the steps that a foundation pit is excavated, and a 300 mm soil layer is reserved on a foundation part and manually cleaned; a drainage hole and a drainage ditch are manually excavated, a concrete layer is poured, a water guide pipe is installed in the drainage hole, the water guide pipe is reserved by selecting a PVC pipe with the pipe diameter specification of phi 50, the length of the buried part is 500 mm, a layer of filter screen cloth is arranged, and an alkali-resisting glass fiber net is hung at the position of a sand layer; spraying slope concrete for the first time; soil nails are manufactured and installed; manufacturing and installing a reinforcing mesh; removing loose soil on the slope surface before binding a reinforcing mesh, and spraying concrete for the second time; and concrete curing. According to the construction method, the glass fiber net is additionall