CONSTRUCTION METHOD FOR UNDERGROUND BURIAL STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a construction method for an underground burial structure that reduces construction costs and curtails a construction period. ! SOLUTION: A construction method for an underground burial structure, which is for constructing soil improvement structures 40a to 40l by underground burial, transversely across a conforming section 10 to a non-conforming section 20, comprises: a section wall burial process in which a section wall for sectioning a scheduled formation area from outside is buried; a removal process in which soil of the scheduled formation area, where a section wall has been buried in the section wall burial process, is removed; a formation process in which a contaminant diffusion prevention area 30 is formed by filling sound soil in the scheduled formation area from which soil has been removed in the removal process; another removal process in which a section wall buried along the periphery of the contaminant diffusion prevention area 30 that has been formed in the f