Method for temporary support of ground for quasi-vertical face earthworks, involves injecting stabilized resin type materials, and performing earthworks excavation on front height exceeding specific value after setting injection processes

摘要

The method involves providing tubular frames or metal sections. Injection filling of a deep part of a nailing is performed in concrete end. An anchoring portion is located below a base of a projected excavation. An equipment for pressure injection relative to a reaction of the nailing, is anchored. Ultrafine particles e.g. micrometric particles and nanometric particles are injected in an upper part. Stabilized resin type materials are injected. Earthworks excavation is performed on a front height exceeding 6 m after setting injection processes.