OUTER WATERPROOFING METHOD FOR UNDERGROUND STRUCTURE HAVING SMALL WORKING SPACE

摘要

PURPOSE: An outer waterproofing method for underground structure having small working space is provided for accomplishing outer waterproofing of an underground concrete structure having a small working space. CONSTITUTION: The outer waterproofing method for underground structure having small working space comprises a step for fixing a base layer on the outer wall of an underground structure using fixing materials to prevent breaking down of surrounding earth and sand, wherein the fixing materials can be a soil protection panel or a cement slurry wall; a step for forming a waterproofing layer by injecting a waterproofing liquid on the base layer at 100-500 psi and; a step for forming an adhesive layer by applying adhesive paint on the waterproofing layer. Consequently, outer waterproofing of an underground concrete structure having small working space is accomplished conveniently and economically.