Installation, Pressurization, and Grouting of Hydraulic Flat Jacks in Morrow Point Powerplant

摘要

The 5 phases covered in the hydraulic flat jack program at Morrow Point Powerplant, Colo., are calibration and testing, installation, instrumentation and measurements, pressurization, and grouting. The flat jacks were embedded in the concrete walls on opposite sides of the underground chamber, utilizing the interior walls and floors as load-bearing struts. The jacks were intended to keep the internal concrete structures in contact with the rock excavation in the area of a large shear zone. (Author)