THREE-SHAFT DEEP MIXING METHOD OF SOIL STABILIZATION

摘要

PROBLEM TO BE SOLVED: To surely and efficiently agitate and mix soil and a solidification material in a triple agitating area which is formed of three rotating shafts.;SOLUTION: The rotating shafts 1a on both sides among the three rotating shafts 1 are rotated in the same direction, and the central rotating shaft 1b is rotated in the direction opposite to the rotational direction of the rotating shafts 1a, so that a series of agitating flows, where improved soil continuously flows throughout an agitating area, can be formed. A difference is made between improved soil pressures in the agitating area by making a difference between the amounts of the solidification materials supplied from the respective rotating shafts, so that a horizontal flow of the improved soil in the agitating area can be accelerated. The amount of the solidification material supplied from the respective rotating shafts is changed with time. The amount of the solidification material supplied from the high-load rotating shaft is set larger than that of the solidification material supplied from the low-load rotating shaft.;COPYRIGHT: (C)2006,JPO&NCIPI