Searched for:
(1 - 20 of 54)

Pages

document
Cornish, B.A. (author)
With the aid of a grant from the Water Research Foundation of Australia, the Water Research Laboratory has undertaken an investigation into surface treatments for small farm dams Vegetal cover with natural gr asses and low cost soil and bitumen admixtures are under study. As a preliminary to laboratory and field testing, a survey of available...
report 1965
document
Lillevang, O.J. (author)
Wave and sand movement conditions must be right for a coastal groin to produce the beneficial effects it was built to achieve. Some groins produce no shoreline improvement; some groins prove harmful; some that act beneficially also cause harm elsewhere, and disputes follow. Design data are sparse, so experience and judgment become important...
report 1965
document
Gronewald, G.J. (author), Duncan, W.W. (author)
This is a progress report on the Homer Spit Beach Erosion Study. Information is presented regarding the rapid acceleration of the erosion processes due to the subsidence of the Homer Spit during the 27 March 1964 earthquake. The effect on existing groins both before and after the quake are discussed. Immediately after the quake, emergency...
report 1965
document
Kidby, H.A. (author), Oliver, J.G. (author)
The study area encompasses 18 miles of Oregon coastline known as Clatsop Beach, which lies between the Columbia River south jetty and Tillamook Head, south of Seaside, Oregon. The physical changes (including man-made changes such as jetty construction which was initiated in 1885) that have occurred in the area since 1792 are described and...
report 1965
document
Lai, K.K. (author), Stone, D.M. (author), Hattersley, R.T. (author)
Model studies formed a basis for investigating the hydraulics of bywash spillways for farm darns When constructed in natural earth such spillways are trapezoidal in cross section The surface of the spillway needs protection from scour and this protection is usually in the form of grass. These tests extended to variations in spillway geometry and...
report 1966
document
Cornish, B.A. (author), Yong, K.C. (author), Stone, D.M. (author)
As part of a program of research aimed at improving the design and construction of farm dams, the Water Research Laboratory, has with the aid of a grant from the Water Research Foundation of Australia, undertaken a study of the protection afforded to spillways by various low cost surfacing techniques. These include vegetal cover by natural...
report 1967
document
Yong, K.C. (author), Stone, D.M. (author)
Third report on use of grass on farm spillways; tests on slopes 1:10 to 1:2.5 (prototype scale tests). Permissible velocities suitable for design were given.
report 1967
document
Yong, K.C. (author)
This report is the fourth in a series dealing with the use of natural grasses and bituminous and soil admixtures for surfacing farm dam bywash spillways. When the work reported here was completed, the test channels were demolished to make way for new construction, and no further tests of this nature are contemplated. The previous report (Yong...
report 1968
document
Bakker, W.T. (author), Joustra, D.Sj. (author)
The aims of this paper are: 1. To publish some available coastal measurements and computations of more than local importance. 2. To investigate the influence of groynes in practice. 3. To investigate the motion of the gullies in the outer deltas. The following conclusions are drawn: 1. The gross littoral drift along the Dutch coast is of the...
report 1970
document
Wiggers, J.B.M. (author)
report 1970
document
Jong, R.J. de (author)
report 1970
document
Whitehead, E. (author)
Guidance on the use of grass to stabilise surfaces subject to erosion by intermittent flow. Provides information on the erosion resistance and frictional resistance of grass. Includes recommendations on grass mixtures, etc. Extensive literature survey
report 1976
document
Gossé, J.G. (author)
A knowledge of the distribution of sediment in terms of bed and suspended load is essential for a good working description, both qualitative and quantitative, of a coastal sea. A variety of physical, chemical and biological processes in coastal waters are directly connected to, or influenced by, the sediment regime present there. Physical...
report 1977
document
Anonymous, A. (author)
CONDITIONS LEADING TO CHANNEL EROSION FACTORS INFLUENCING DESIGN REQUIRED INFORMATION FOR DESIGN OF CHANNELS DESIGN PROCEDURE FOR ARMORFLEX LlNED CHANNELS EXTENT OF PROTECTIVE LlNING SELECTION OF FILTER FABRIC BACKFILL AND VEGETATION
report 1981
document
Bolton, P. (author)
The terms 'wash load', 'suspended bed material load' and 'bed load' are not clearly defined but, if applied with care, provide a useful basis for sub-dividing the total discharge of sediment in a river for the purpose of measurement. The accuracy with which each of the three types of sediment transport must be measured will depend on their...
report 1983
document
Ribberink, J.S. (author), Van der Sande, J.T.M. (author)
The problem of aggradation in a river due to overloading is tackled with a mathematical model consisting of a set of one-dimensional (in space) basic equations in which the water motion is assumed to be quasi-steady and the sediment transport is determined by local conditions. Analytical solutions are presented of a linearized simple-wave model,...
report 1984
document
Mastbergen, D.R. (author), Kemenade, A.J.M. van (author), Winterwerp, J.C. (author), Pernis, W.J. van (author), Groot, M.B. de (author)
report 1987
document
Klein Breteler, M. (author), Laboyrie, J.H. (author), Verheij, H.J. (author)
Erosion of banks and dikes subjected to water motion can be prevented, for instance by application of cellular concrete revetment blocks. This type of revetment combined the merits of a closed block revetment and a slope revetment consisting of loose materials. Advantages are high permeability, high stability against wave attack and low block...
report 1988
document
Delo, E.A. (author)
This report is an update of the working manual part of 'The hydraulic engineering characteristics of estuarine muds' Report No SR77, December 1986, made in the light of research conducted at Hydraulics Research Ltd (HR) and invited comments received from end users in the industry. A considerable research programme has been undertaken by HR since...
report 1988
document
Laboyrie, J.H. (author), Klein Breteler, M. (author), Verheij, H.J. (author)
report 1988
Searched for:
(1 - 20 of 54)

Pages