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Description of the geology of the Gallipolis Locks and Dam site and a discussion of how the existing foundation conditions is the purpose of this report. The Gallipolis Locks and Dam is on the Ohio River at mile 279.2 near the town of Gallipolis, Ohio. Geologically, the area lies in the Kanawha section of the Appalachian Plateau Physiographic Province. The Pennsylvanian Age Rocks are mostly sandstones, shales, claystones, coals and sillstones. The principal features of the project are two adjacent, parallel lock chambers constructed as conventional concrete gravity-wall structures founded on rock. The report describes in detail the procedures used to establish foundation grades, and to excavate and treat the foundations. Pertinent correspondence relating to foundation conditions along with typical foundation treatment photographs is included. Geologic cross sections, foundation treatment profiles and boring logs are part of this report.
PARTIAL CONTENTS: Progress Before construction Feb 5 1988; Progress during construction Sept 1 1988; Predrainage Well; Piezometer; Slurry Trench; General Excavation; Flatfoot Creek; Downstream Cofferdam; Exploratory Drilling; Blasting equipment and layout; Rock Excavation; Foundation Cleanup; Aerospray 70 application; River wall foundation photographs.
The Gallipolis Locks and Dam are located on the Ohio River at mile 279.2 and include a 600- by 110-ft main chamber and a 360- by 110-ft auxiliary chamber. As a result of increasing traffic and tow sizes, these locks have become a serious bottleneck to vessel movement along one of the major arteries of the United States inland waterway system. This report includes the results of an investigation to determine the physical capacity of the existing Gallipolis Locks, considering both operational and minor structural changes that could possibly improve the locking efficiency at these locks. Several alternative operating policies, some requiring structural improvements, were analyzed and compared by employing computerized TOWGEN/WATSIM (tow/generator/waterway simulator) model package. Some proposed improvements were analyzed through the use of hand-computational and/or graphical techniques. The prototype data used in the investigation were collected and summarized through the Performance Monitoring System (PMS) of the Corps of Engineers Inland Navigation Systems Analysis (INSA) program. The report includes discussions of the data formats required by the model, calibration of the model, and analysis of model output. A number of capacity curves are presented to show the relation between increasing commodity tonnages, tow delays, and lock utilization. Lock capacity levels, in terms of tonnage per month and tonnage per year, are tabulated for convenient comparison of all potential operational and structural improvements.
CONTENTS: Outlet Structure Core Logs; River Inlet Core Logs; Land Culvert Core Logs; Middle Culvert Core Logs; River Culvert Core Logs; Downstream Approach wall Core Logs; Upstream Approach Wall Core Logs; River wall Core Logs; Middle Wall Core Logs; Land Wall Core Logs; Sill Core Logs; and, Exp.l and II Logs after grouting.