Civil Design of Underground Hydro Power Projects
Various reasons exist for the development of underground schemes. Limited space at dam sites in deep and narrow river valleys makes it favourable to separate the power house from the dam...
Rock Engineering at Cat Arm Hydroelectric Development
Cat Arm Hydroelectric Development in Newfoundland, Canada, develops 129 MW from 384 m of head. The project was constructed between 1981 and 1984 and comprises 5 large dams, 5 small dams,...
The Effect of Geology on the Dinkey Creek Project
The proposed Dinkey Creek Project is located about 40 miles northeast of Fresno, California. The project consists of a 360-foot high rockfill dam, two powerhouses, 41,600 feet of power...
Adapting Tunneling to Rocks of the Sierra Nevada
Exploration programs were completed to select the most economical tunnel routes which are not only the shortest but are those which can be excavated by tunnel boring machines with the...
Lake Tap?Crater Lake
The Crater Lake Phase of the Snettisham Hydroelectric Project has been designed and is currently under construction. This paper describes the design and construction of the lake tap which...
High Pressure Grouting of the Bath County Tunnel System
A major grouting program was completed at the Bath County Pumped Storage Project between March and September 1985. High pressure grouting for seepage reduction was completed in a total...
Subsurface Savings
Less conservatism than usual in designing building foundations is being accepted or demanded by some owners to save money. The article describes four examples of cost-cutting innovations,...
The MPSP System: A New Method of Grouting Difficult Rock Formations
In unstable rock masses the traditional stage grouting methods may prove impractical or ineffective. A recent innovation has been the Multiple Packer Sleeved Pipe (MPSP) System. Akin to...
Highway Damage Due to Subsidence
In this study subsidence profiles over three longwall panels, which were mined beneath state highways in Southeastern Ohio, were obtained. Immediate and short term subsidences were recorded....
Rock Armouring to Unconventional Breakwaters: The Design Implications for Rock Durability
This paper identifies the need for quantitative durability testing of rock for use on dynamically stable rock armored slopes. The derivation and use of a suite of engineering tests for...
Application of Computational Model on Berm Breakwater Design
The development of a computational model on dynamic stability is summarized. The model is able to predict profiles of slopes with an arbitrary shape under varying wave conditions. The...
Implementation and Performance of Berm Breakwater Design at Racine, WI
A large berm-type breakwater has been constructed at the entrance to Racine Harbor, Wisconsin, on the western shore of Lake Michigan. The breakwater is approximately 450 feet long, in...
Unconventional Rubble-Mound Breakwaters?Concerns
A Seminar on Unconventional Rubble-Mound Breakwaters was held in Ottawa, Canada, on the 15th and 16th of September 1987. This paper is an attempt to summarize the general discussion that...
Riprap Design by Modified Safety Factor Method
The Safety Factor method for designing riprap is based upon straight forward physics combining rock properties and flow characteristics. M.A. Stevens developed the method by summing the...
Breakwater Breakthrough�Bold New Breakwaters
A new rubble-mound breakwater design is a departure from the conventional approach detailed in the U.S. Army Corps of Engineers Shore Protection Manual. The new concept, called the berm...
Investigation of Excavatability in the Piedmont
The lateral and vertical variability of rock weathering in the Piedmont presents significant problems in evaluating the probable cost of excavation for deep basements, pipeline, road cuts,...
Design of Drilled Piers in the Atlantic Piedmont
The philosophy and methods of drilled pier foundation design in the Atlantic Piedmont are described. Consideration is also given to the unique characteristics of decomposed metamorphic...
Restoration of a Construction-Scarred Dune
The rehabilitation and extension of the north and south jetties at the entrance to Siuslaw River required the contractor to stockpile jetty stone in nearby surge piles in order to maintain...
Foundations and Excavations in Decomposed Rock of the Piedmont Province
The five papers in this volume deal with foundations and excavations in the Piedmont Province of the USA. This is a region underlain by very old metamorphic rocks that are overlain by...
Gradation and Layer Thickness Effects on Riprap
Since riprap has become a costly and in some areas, scarce commodity, proper design maximizing the level of protection with a minimum rock size and layer thickness is an important goal....
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