Soil Improvement Method Utilizing A High Speed Water and Air Jet: On the Development and Application of Columnar Solidified Construction Methhod (Column Jet Method)

摘要

As a part of developing underground construction method using highspeed water jet, an induced injection method primarily aiming at soil improvement has been developed. In this method, ground is broken with high speed water-air jet to form a cavity and an injection material such as cement milk is injected thereto. This method enables construction of columnar solidified body with accuracy at a desired position. This report introduces a series of research works starting from the development and ending in actual application of this method.