Underground diaphragm wall guide wall assembly type telescopic formwork

The invention relates to an underground diaphragm wall guide wall technology in the fields of foundation pit support engineering of municipal administration, housing construction, water transportationand the like. The invention provides an underground diaphragm wall guide wall assembly type telescopic formwork. The formwork comprises formwork bodies, and two inner supporting rods and two outer sleeve rods are symmetrically distributed on the inner side of each formwork body. Hinge bases are fixedly arranged at the positions, where the supporting rods are located, of the inner side of each formwork body, the inner supporting rods and the outer sleeve rods are movably connected with the formwork bodies through shafts and the hinge bases respectively, 6-10 positioning transverse through holes are formed in the center lines of the inner supporting rods at intervals of 100 mm, and two sleeve rod transverse through holes are formed in the ends, away from the hinge bases, of the outer sleeverods at intervals of 50 m