As contamination from liquid wastes and polluted groundwater continue to be a major environmental remediation topic, methods and applications for installing vertical barriers continue to evolve. The need to contain the pollutants to reduce their potential effects has broadened the scope of a vertical barrier. Greater depths than before are required as the contamination continues to migrate downward. The locations selected for a barrier wall vary from placing them around a preplanned disposal site, to installing them next to existing structures.
This variety of applications necessitates the advancement of technologies to install them. A technique currently being used is the Deep Soil Mixing (DSM) method. DSM is capable of reaching depths of 120 feet or more, and installing a barrier with in a few feet of existing structures. Inherent in the system are added benefits of no open excavations and no removal of contaminated soils.
Installation of vertical barriers using deep soil mixing