02574nam a2200373 4500 20260817172459.0 200598 th eng .b1013461x AIT Thesis no.WA-85-56 Nati Yanapirut Channel bed degradation caused by construction Bangkok : Asian Institute of Technology, 1985 70 p. Thesis ; no. WA-85-56 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 1985 The study is focused on what factors determine the channel bed degradation caused by constrictions. This investigation is conducted under the static equilibrium theory. Experimental investigation is conducted in a recirculating rectangular flume. the flume is 20 m length, 0.6 m width and 0.8 m depth. Three kinds of sand with median particle diameter 0.5, 0.75 and 1.5 mm are used in this experiment, and 96 runs are performed. The effect of size of sand, Froude number, opening ration, spacing between constriction on the equilibrium depth of scour are studied by verifying the dimensional analysis with the help of experimental data. It is found that the relative depth is not much affected by the size of bed material and Froude number. It is concluded that the relative depth for the scour caused by channel constriction is mainly a function of the constriction ratio and the ratio of spacing and length of the spur dike. An empirical equation is obtained to compute the relative depth. Sediment transport Wang, Tsan-Wen, Chairperson Tawatchai Tingsanchali, Examination Committee Prida Thimakorn, Examination Committee Asian Institute of Technology. Thesis ; no. WA-85-56 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B20186 .b1013461x mnait s 240411 2 951012 m a s 0 mnait mnarc 22 40 Barcode : 30050120573372 CREATED : 2014-02-04 RECORD # : i12785143 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160035084 CREATED : 2016-09-02 RECORD # : i12878716 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 16282 16282 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.WA-85-56 30050120573372 2026-08-17 17:24:59 3 2026-08-17 22 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.WA-85-56 30050160035084 2026-08-17 17:24:59 2026-08-17 40