CROSSING WALL FORMATION METHOD BY CONTINUOUS MIXING TREATMENT CONSTRUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a crossing wall formation method by a continuous mixing treatment construction method capable of utilizing the characteristics of ground improvement by the continuous mixing treatment construction method and applying a connection structure so that integration strength of mutual wall bodies in a crossing part can be increased sufficiently. SOLUTION: A digging mechanism is pulled up when the digging mechanism forming an improved earth wall W2 by posterior work execution reaches a side face in front of an improved earth wall W1 which is constructed previously to pass it in such a way that an upper part of the improved earth wall W1 by previous work execution is cut out partially, and the digging mechanism is inserted down to the original depth again when it reaches a face on the opposite side of improved earth wall W1. After that, continuous formation of the improved earth wall by posterior work execution is continued.