Abstract: The current state of the practice of the installation of soil cement mixed columns has the following disadvantages: low level of automation; poor quality assurance and over simplified design and construction parameters. This paper presents the development of an intelligent controlled soil cement mixed column installation system as well as the evaluation of this automation system. The following results can be obtained: the intelligent soil cement mixed column installation system can remotely collect the construction parameters automatically. This system can automatically control the length, plumbness and cement ratio of the columns, therefore, the quality of the soil cement mixed columns is improved. The subsurface conditions can be determined from the electric current in the drilling system and the variable frequency slurry injection method can be introduced to enhance the ground improvement results based on the sitespecific conditions that the drilling rod encountered.

Key words: soil cement mixed columns;intelligent, remote monitoring, soil layer detections, variable frequency slurry injection