Pre-Excavation Grouting of Contact Zone and Rock Formation

Timothy J. Myers, Holly Rabine, Alex Naudts, David Magill
Geo-Strata 2009

Abstract

The Environmental Protection Agency has cited combined sewer overflow (CSO) discharges as a significant source of pollution to the nation’s surface waters and, in the Clean Water Act of 1972, called for the correction or water quality problems caused by discharges from combined sanitary and storm sewers.  The City of Dearborn, MI has chosen to accomplish this tasks by constructing large-diameter shafts to collect and treat the large combined overflows during storm events.  To facilitate the construction of these shafts, permeation grouting techniques were utilized.