Guidelines for the design, adjustment, and operation of models for the study of river sedimentation problems
Franco, John J.
Instruction ReportAbstract: Streams in which sedimentation problems are encountered are extremely complex and developments within these streams depend on many factors, most of which are interrelated. Few basic principles are available to the design engineer in the solution of problems concerned with channel improvement and stabilization, and many of the plans and types of structures used have been based on experience and general judgment. Because of the difficulties and costs involved in experimenting with the actual river and the impracticality of comparing the effectiveness of various concepts and designs under the same conditions, the development of new principles and procedures or the optimum solution to many problems have to depend to a considerable extent on river model investigations coordinated with results in the field. This report is a general guide for laboratory engineers and technicians concerned with model investigations of sedimentation problems in alluvial streams. Alluvial streams, whether large or small, have many of the same general characteristics and their development depends on the same basic laws. Movable-bed models used to study river sedimentation problems are essentially small rivers patterned after reaches of larger rivers and are adjusted to reproduce the essential characteristics of those reaches. Engineers experienced with laboratory procedures and the basic laws affecting developments in natural streams can design and adjust models for the study of specific or general problems. This report describes many of the principles and procedures used in the design, adjustment, and operation of movable-bed models and the factors to be considered in the development of improvement plans and in the interpretation of model results. Appendices cover the characteristics of model bed material, slopes required, and check list for model design and operation.
Hydraulics Laboratory (U.S.)Engineer Research and Development Center (U.S.)
Alluvial streams; Alluvial rivers; Movable -bed models; Hydraulic models; Bed materials (Models); Sediment transport; Sedimentation; Deposition; Guidelines; Procedures; Design; Stream beds
Instruction report (U.S. Army Engineer Waterways Experiment Station) ; H-78-1.
Approved for public release; distribution is unlimited.