Application Research of Electric Current Method in Controlling the Pile Length of DMC Construction

Deep mixing column (DMC) is a commonly used effective reinforcement in the treatment for Soft Foundation. In the DMC construction, due to the changes of strata, the work of the bit in mixing process will also change, then it lead to the electric current changes. By analyzing the construction process of DMC, This article proposes using the electric current method to control the DMC length in the soft foundation reinforcement, and through theoretical analysis and field experimental study, we conclude that it is a very good response to the depth of strata Changes through using the electric current numerical changes, when the electric current numerical value reaches a certain value, it meets the design requirements of the depth, then we should stop stirring the pile.