CONSTRUCTION METHOD OF UNDERGROUND CONTINUOUS WALL AND DESIGN METHOD OF SOIL MORTAR COMPOSITION

PROBLEM TO BE SOLVED: To propose a construction method of an underground continuous wall and a design method of a soil mortar composition to ensure a construction of the underground continuous wall to be carried out with no limit in construction conditions such as construction depth, structure, and like.SOLUTION: For a construction method of an underground continuous wall provided with an excavating process to excavate an excavated trench 6 by excavating natural ground using an excavating machine with excavating cutters and a driving mechanism thereof, a composing process to mix an injection liquid and excavated soil using a drill machine in the excavated trench 6, and an insert process to insert a core member 4 into the excavated trench 6, an injection liquid contains a fixation agent, a two-type admixture with dispersion effect and delay effect, and a retardant.SELECTED DRAWING: Figure 4 【課題】施工深度や構造等の施工条件に限定されることなく確実に施工を行うことを可能とした地中連続壁構築方法およびソイルモルタルの配合設計方法を提案する。【解決手段】掘削用カッタと掘削用カッタの駆動部とを有する掘削機本体により地山を掘削して掘削溝６を形成する掘削工程と、掘削溝６内において、掘削機本体を利用して注入液と掘削土とを混合撹拌する造成工程と、掘削溝６内に芯材４を建て込む建込工程とを備える地中連続壁構築方法であって、注入液には、固化材と、分散効果および遅延効果を備える２剤混合型の混和材と、遅延剤とが含まれている。【選択図】図４