AI SearchAnalysis of scour hole formation in a plunge pool using a physical model (Record no. 4993)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04544nas a2200409 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817162428.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 091207s2009 th uu|m rtt 0| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12070762 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.WM-08-04 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Heng Sokchhay |
| 245 10 - TITLE STATEMENT | |
| Title | Analysis of scour hole formation in a plunge pool using a physical model |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2009 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 89, [3] leaves : |
| Other physical details | ill. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. WM-08-04 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 2008 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Plunge pool scour due to water jet impingement from flip bucket spillways is a major concern for stabilization of the hydraulic structures. Scour hole prediction using physical model is a potential tool to foresee its characteristic during the design stage. This study is aimed at predicting scour hole characteristic performed in the plunge pool bed of Nam Ngum 3 (NN3) Spillway in Lao PDR. The whole tasks were carried out using NN3 Spillway Physical Model constructed in the hydraulic laboratory of Water Engineering and Management department, Asian Institute of Technology, Thailand, with an undistorted scale of I :75 and the chute spillway composes of 4 radial gates. Both cohesive (cement mortar) and non-cohesive (gravel) material were used as trial bed materials. After several tests, cement mortar was selected as an ideal material for producing scour because the scour hole result was steep (front slope = 320%) and its maximum scour depth and impact location matched with some empirical formulas. The ideal mixing ratio by volume of cement mortar is Sand(40):Cement(1):Water(5), unit is bucket. The equilibrium phase of scour process was considered to occur at 1 hour (model dimension) after starting experiment because the energy of falling water was dissipated enough in the scour hole and the change in scour depth was not so significant after that period. Scour hole mainly depends on spillway's operation and natural topography of the river downstream. In this case, scour erosion developed toward the left bank because water impinged on the right bank and changed its direction to the left bank. The test showed that the ultimate scour depth measured from tailwater surface is around 93.77 m at maximum discharge (8,182 m³). The energy dissipated by both tailwater and scour hole were computed and the corresponding erosion volumes were also determined. The design spillway can dissipate energy about 33.32% of the total energy at maximum discharge. There are 28 empirical formulas which were used to estimate the ultimate scour depth. Their statistic performances showed that the combination formula of Mason-B (1979), Taraimovich (1978) and Mason-A (1985) yielded the most proper result. Additionally, the combined formula, Kawakami (1973)-Taraimovich (1978) was the most appropriate formula for impact location computation. Finally, based on the experimental data, a new empirical equation for maximum scour depth prediction was proposed. It is proportional to unit discharge and falling head (difference between reservoir water level and bucket lip) and inverse proportional to tail water depth. The new formula provided the satisfactory result in comparing with the existing formulas |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Scour (Hydraulic engineering) |
| Geographic subdivision | Laos |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Spillways |
| Geographic subdivision | Laos |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Babel, Mukand Singh, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Sutat Weesakul, |
| Relator term | Examination committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Clemente, Roberto S., |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tawatchai Tingsanchali, |
| Relator term | Examination committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | AIT Fellowship, |
| Relator term | Scholarship donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. WM-08-04 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B04299 ">http://203.159.5.9/ait-thesis/detail.php?q=B04299 </a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b12070762 |
| b | mnait |
| c | u |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240329 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 091207 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | u |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120550388 |
| CREATED | CREATED : 2014-03-31 |
| RECORD Id | RECORD # : i12783316 |
| LPATRON | LPATRON : 1030104 |
| LCHKIN | LCHKIN : 2021-05-05 |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 2 |
| -- | TOT CHKOUT : 6 |
| -- | TOT RENEW : 7 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120233225 |
| CREATED | CREATED : 2016-01-04 |
| RECORD Id | RECORD # : i12921294 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 17/08/2026 | 50.00 | AIT Thesis no.WM-08-04 | 30050120550388 | 17/08/2026 | 3 | 17/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no.WM-08-04 | 30050120233225 | 17/08/2026 | 17/08/2026 | 40-Archives |