Assembling type recyclable deep foundation pit support system and construction technology thereof

The invention discloses an assembling type recyclable deep foundation pit support system and a construction technology thereof. The support system comprises one type selected from an assembling frame,a plurality of wood planks, a plurality of base plates, a plurality of anchor heads, a plurality of anchor rods and a plurality of anchor cables, wherein the assembling frame is composed of a plurality of standard frame units, a plurality of side frame units and a plurality of angle frame units; and the anchor rods or the anchor cables fix the standard frame units, the side frame units and the angle frame units on the side walls of a foundation pit through anchor rod connecting holes or anchor cable connecting holes in the base plates and the anchor heads on the outer sides of the base plates. The invention further provides the construction technology. The support system assemblies and combines profile steel and the wood planks to realize the purpose of the deep foundation pit soil body support; the assembling pr