FORM DEVICE FOR HORIZONTAL SECTION CONSTRUCTION OF UNDERGROUND WATERWAY, FOR APPLYING TO CONSTRUCTION OF USUAL HORIZONTAL SECTION WATERWAY HAVING MINUTE SLANT

摘要

PURPOSE: A form device for horizontal section construction of an underground waterway is provided to improve work efficiency of repeated injecting and hardening works of concrete by facilitating separation of the form device from a lining wall and movement to the next placing position. CONSTITUTION: A form device for horizontal section construction of an underground waterway(1) comprises horizontal support parts(10) constituting a base frame continued along a horizontal section excavation ground(2); a waterway-forming wall part(20) having a cylindrical sidewall constituting the inside of the waterway to the circumference of the horizontal support part; a rear support part(30) supporting the horizontal support part on the placed water way of the rear of the waterway-forming wall part; and a front support part(40) supporting the horizontal support part on the excavation ground of the front of the waterway-forming wall part.