CORE MATERIAL FOR EARTH RETAINING AND ITS EXECUTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for executing a core material for earth retaining capable of easily conducting the pull-out works of the core material at a low cost without having an effect such as noises, vibrations or the like on peripheral environment even in earth retaining having large depth. SOLUTION: The surfaces of the core materials 1 for earth retaining are covered previously with bentonite sheets 2, and the bentonite sheets are supplied with water by a water spray or the like and the core materials 1 are built in the case of the execution of works of earth retaining. Since frictional force between the core material built into a ground and a pit wall is relaxed by a mud-like bentonite by previously supplying water and swelling bentonite, the core material can be pulled out easily by multi-pully pull-out using a crane or the like in the case of core-material removal after the execution of works of earth retaining.