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Journal articles on the topic 'Emergency spillway'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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1

Tacail, François G., Barry Evans, and Alan Babb. "Case study of a labyrinth weir spillway." Canadian Journal of Civil Engineering 17, no. 1 (1990): 1–7. http://dx.doi.org/10.1139/l90-001.

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A labyrinth weir is an effective and economical means of providing increased spillway capacity under some restricted operating conditions. This type of weir is particularly suited to reservoir sites where a low head to high discharge relation is required, the topography restricts the spillway width, and a self-operating structure is highly desirable for emergency operation. Over the past few decades, labyrinth weir spillways have been constructed throughout the world. Definitive guidelines and theoretical procedures pertaining to hydraulic design of this type of weir are not completely establi

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2

Oshikawa, Hideo, Yuka Mito, and Toshimitsu Komatsu. "An Experimental Study on Flood Control Capability of Dry Dams Constructed in a Series." Journal of Disaster Research 10, no. 3 (2015): 467–74. http://dx.doi.org/10.20965/jdr.2015.p0467.

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The new Cascade concept of flood control is demonstrated in laboratory experiments in which upstream dams in a series of dams constructed along a river overflow from emergency spillways while the final downstream dam is required only to use its normal spillway and never do its emergency spillway. Multiple small dry dams lacking a slide gate in a normal spillway should be constructed in a series rather than as a single large dam to prevent flood disasters and to preserve the natural environment. Dry dams for flood control have recently been reviewed, planned, and built at sites in Japan. In thi

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3

Pildysh, M., R. J. Slopek, J. O. H. Nunn, and R. A. Keys. "Bearspaw Development: design and construction of a side-channel overflow spillway." Canadian Journal of Civil Engineering 17, no. 3 (1990): 423–30. http://dx.doi.org/10.1139/l90-046.

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An emergency spillway with a capacity of 1840 m3/s has been built to increase the spillway capacity of the 30-year-old Bearspaw Development so that it can safely pass the probable maximum flood. A unique aspect of the free-overflow, side-channel emergency spillway is the weir. This consists of an earthfill dyke with a cap and downstream facing of reinforced concrete. Comprehensive hydraulic model testing was undertaken to provide detailed design data and optimize the design of the emergency spillway. The overflow weir substructure is a zoned earthfill dyke with a 2 mm thick polyethylene membra

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4

Roushangar, Kiyoumars, Ali Foroudi, and Mojtaba Saneie. "Influential parameters on submerged discharge capacity of converging ogee spillways based on experimental study and machine learning-based modeling." Journal of Hydroinformatics 21, no. 3 (2019): 474–92. http://dx.doi.org/10.2166/hydro.2019.120.

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Abstract Ogee spillways with converging training walls are applied to lower the hazard of accidental flooding in locations with limited construction operations due to their unique structure. Hence, this type of structure is proposed as an emergency spillway. The present study aimed at experimental and machine learning-based modeling of the submerged discharge capacity of the converging ogee spillway. Two experimental models of Germi-Chay dam spillway were utilized: one model having a curve axis which was made in 1:50 scale and the other with a straight axis in 1:75 scale. Using visual observat

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Freckleton, Derek R., Michael C. Johnson, M. Leslie Boyd, and Dustin G. Mortensen. "Stop Logs for Emergency Spillway Gate Dewatering." Journal of Hydraulic Engineering 137, no. 6 (2011): 644–50. http://dx.doi.org/10.1061/(asce)hy.1943-7900.0000348.

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Mikhasek, Andrey, Maxim Rodionov, Nikolay Malyugin, and Artem Klimov. "Stand-by spillways in phreatic dams." MATEC Web of Conferences 196 (2018): 02008. http://dx.doi.org/10.1051/matecconf/201819602008.

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Hydraulic structures operation is always connected with accident risks. The authors analyzed emergency situations which affected dams located on the territory of the USA and Russia. This analysis showed that the most dangerous accident which took place at hydroelectric complexes is an overfall through the crest of the dam accompanied with the formation of washouts and blow-out waves. The most striking example here is the accident at St. Francis dam. According to most researchers, its main cause was the human factor. To reduce economic losses which are due to an accident on the hydro-technical

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7

PALMERTON, J. B., J. H. MAY, and D. C. BANKS. "Geotechnical Aspects of Headcutting in Emergency Spillway Channels." Environmental & Engineering Geoscience xxviii, no. 1 (1991): 89–94. http://dx.doi.org/10.2113/gseegeosci.xxviii.1.89.

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8

Zhang, Hong Qing, Wei Kai Tan, Yi Long Lou, and Qian Zhao. "Pressure Distribution of Pressure and Non-Pressure Sections of a Hydropower Station Spillway Tunnel." Applied Mechanics and Materials 716-717 (December 2014): 244–47. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.244.

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In this paper, we used VOF combining turbulent model to simulate pressure distribution of pressure section and non-pressure section in a hydropower station spillway tunnel with high head and large discharge in China. The results show that in the pressure section of the spillway tunnel, the values of pressure of emergency gate slot, working gate and the pressing slope, getting from physical model experiment and numerical simulation, are all positive. While in the non-pressure section, the No.1、2、3 aerators of the sudden enlargement and sudden drop occur the maximum pressure. And at the back of

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9

Choi, Hyun Soo, Ju Ha Hwang, Seung Jin Maeng, and Hyung San Kim. "Determining Emergency Levels According to Spillway Overflow Depth for Agricultural Reservoirs." Crisis and Emergency Management: Theory and Praxis 14, no. 10 (2018): 57–71. http://dx.doi.org/10.14251/crisisonomy.2018.14.10.57.

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10

Yeo, Hongkoo, Joongu Kang, and Sanghwa Jung. "An Experimental Study for Construction of Emergency Spillway in Daechung Dam." Engineering 04, no. 09 (2012): 568–77. http://dx.doi.org/10.4236/eng.2012.49072.

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11

Konoshenkov, Aleksandr Alekseevich. "FORMULATION OF CALCULATION MODEL OF GROUND COFFERDAMS DESTRUCTION IN THE EMERGENCY SPILLWAY." Vestnik Gosudarstvennogo universiteta morskogo i rechnogo flota imeni admirala S. O. Makarova 8, no. 4 (2016): 94–104. http://dx.doi.org/10.21821/2309-5180-2016-8-4-94-104.

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12

Oshikawa, Hideo, Yuka Mito, and Toshimitsu Komatsu. "Study of Flood Control Capability and Advanced Application of Multiple Dams Constructed in Series." Journal of Disaster Research 8, no. 3 (2013): 447–55. http://dx.doi.org/10.20965/jdr.2013.p0447.

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The new concept for flood control called ‘Cascade’ method which permits dams to overflow around an upstream region with a sequence of dams constructed in a river is proposed. Multiple small scale dry dams should be constructed in series instead of a large scale dam in order to prevent flood disaster and preserve the natural environment. Recently a flood control dam with a bottom outlet hole as its regular spillway, known as ‘dry dam’, has been reviewed, planned and built in some sites in Japan. Under a condition of a common reservoir capacity, the Cascade type flood control permitting upstream

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13

White, Allen B., Benjamin J. Moore, Daniel J. Gottas, and Paul J. Neiman. "Winter Storm Conditions Leading to Excessive Runoff above California’s Oroville Dam during January and February 2017." Bulletin of the American Meteorological Society 100, no. 1 (2019): 55–70. http://dx.doi.org/10.1175/bams-d-18-0091.1.

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AbstractDuring winter 2016/17, California experienced numerous heavy precipitation events linked to land-falling atmospheric rivers (ARs) that filled reservoirs and ended a severe, multiyear drought. These events also caused floods, mudslides, and debris flows, resulting in major socioeconomic disruptions. During 2–11 February 2017, persistent heavy precipitation in the northern Sierra Nevada culminated in a rapid increase in the water level on Lake Oroville, necessitating the activation of an emergency spillway for the first time since the Oroville Dam was installed and forcing the evacuation

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14

Liu, Lijun, and Zhenyu Wu. "Overtopping Risk Analysis of Earth Dams considering Effects of Failure Duration of Release Structures." Complexity 2020 (August 12, 2020): 1–15. http://dx.doi.org/10.1155/2020/3528350.

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For modern high earth dams, sufficient safety margin is considered in the designs of flood discharge capacity and dam crest elevation to prevent flood overtopping. However, for high earth dams which may induce catastrophic consequences, during their long operational period, extremely hazardous scenarios which could occur and threaten dam safety need to be considered. For the earth dams located in areas with intensive seismicity, there is a possible scenario that the release structures fail due to seismic landslides and gate failures caused by a severe earthquake when the flood begins to enter

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15

Özer, A. T., and L. G. Bromwell. "Protecting roller-compacted concrete armored emergency spillway against uplift with geocomposite drain: Loxahatchee Reservoir example." Geosynthetics International 19, no. 5 (2012): 324–38. http://dx.doi.org/10.1680/gein.12.00019.

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16

NEATHERY, J. S. "1986 Student Professional Paper: Graduate Division: Technique to Evaluate Risk of Emergency Spillway Channel Erosion." Environmental & Engineering Geoscience xxiv, no. 1 (1987): 9–14. http://dx.doi.org/10.2113/gseegeosci.xxiv.1.9.

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17

Shumie, Melese Chanie. "Evaluation of Potential Reservoir Deficiency Due to Climate Change, Kesem Kebena Dam, Ethiopia." Journal of Environmental Geography 12, no. 1-2 (2019): 33–40. http://dx.doi.org/10.2478/jengeo-2019-0004.

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Abstract Flood is an excess inundation of water on a surface and difficult to manage. The flood occurred in previous decades of Afar region of Ethiopia, consequently, leads to the death of human beings, destruction of infrastructures, an annihilation of massive hydraulic structures, and downstream properties. The main responsible factors for the flood incidences of the region are climate change, global warming, deforestation, and desertification. Climate change, however, is the foremost reason of increasing flood hazard. To coincide with this, hydraulic structures are designed based on the pre

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18

Stockstill, Richard L., Stephen T. Maynord, and John E. Hite. "Discussion of “Stop Logs for Emergency Spillway Gate Dewatering” by Derek R. Freckleton, Michael C. Johnson, M. Leslie Boyd, and Dustin G. Mortensen." Journal of Hydraulic Engineering 138, no. 6 (2012): 574–76. http://dx.doi.org/10.1061/(asce)hy.1943-7900.0000535.

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19

Patil, R. G. "Discussion of “Stop Logs for Emergency Spillway Gate Dewatering” by Derek R. Freckleton, Michael C. Johnson, M. Leslie Boyd, and Dustin G. Mortensen." Journal of Hydraulic Engineering 138, no. 6 (2012): 576–78. http://dx.doi.org/10.1061/(asce)hy.1943-7900.0000541.

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20

Johnson, Michael C., M. Leslie Boyd, and Dustin G. Mortensen. "Closure to “Stop Logs for Emergency Spillway Gate Dewatering” by Derek R. Freckleton, Michael C. Johnson, M. Leslie Boyd, and Dustin G. Mortensen." Journal of Hydraulic Engineering 138, no. 6 (2012): 578. http://dx.doi.org/10.1061/(asce)hy.1943-7900.0000556.

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21

Saragih, Jastri Mey, and Hariyadi. "Pengelolaan Lahan Gambut di Perkebunan Kelapa Sawit di Riau." Buletin Agrohorti 4, no. 3 (2016): 312. http://dx.doi.org/10.29244/agrob.4.3.312-320.

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Pengelolaan tata air dan pemadatan tanah merupakan syarat awal pengelolaan lahan gambut di perkebunan kelapa sawit. Kegiatan dilaksanakan di Riau dengan tujuan umum mengetahui dan mengikuti praktek perusahaan dalam mengelola lahan gambut untuk tanaman kelapa sawit, serta dengan tujuan khusus mempelajari sistem pengelolaan tata air perkebunan. Kegiatan dilaksanakan selama 4 bulan mulai Februari – Juni 2013. Pada umumnya sasaran ketinggian air di Perkebunan adalah 25 – 50 cm di bawah permukaan tanah. Sistem drainase terdiri atas kanal utama, kanal cabang, kanal cabang baru, kanal kolektor, parit

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Saragih, Jastri Mey, and Hariyadi. "Pengelolaan Lahan Gambut di Perkebunan Kelapa Sawit di Riau." Buletin Agrohorti 4, no. 3 (2016): 312–20. http://dx.doi.org/10.29244/agrob.v4i3.14341.

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Pengelolaan tata air dan pemadatan tanah merupakan syarat awal pengelolaan lahan gambut di perkebunan kelapa sawit. Kegiatan dilaksanakan di Riau dengan tujuan umum mengetahui dan mengikuti praktek perusahaan dalam mengelola lahan gambut untuk tanaman kelapa sawit, serta dengan tujuan khusus mempelajari sistem pengelolaan tata air perkebunan. Kegiatan dilaksanakan selama 4 bulan mulai Februari – Juni 2013. Pada umumnya sasaran ketinggian air di Perkebunan adalah 25 – 50 cm di bawah permukaan tanah. Sistem drainase terdiri atas kanal utama, kanal cabang, kanal cabang baru, kanal kolektor, parit

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23

EVDOKIMOV, Sergey V., Alexey A. ROMANOV, and Boris G. IVANOV. "LOCAL STUDIES OF ICE COVER EFFECTS ON DAM GATES." Urban construction and architecture 11, no. 2 (2021): 62–66. http://dx.doi.org/10.17673/vestnik.2021.02.10.

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The experience of operation of surface emergency gates in ice-breaking conditions at a number of hydroelectric power plants has shown the insuffi cient eff ectiveness of the methods used to combat freezing of structures. The rules for technical operation of spillway dam gates in winter provide for heating of structures by slots, threshold and skin in conjunction with measures to maintain mines before construction. However, measures to heat gates and build mines are not always suffi ciently justifi ed and justifi ed. In order to obtain full-scale data and scientifi c information for the develop

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24

Yang, Heyi, Guan Chen, Yan Chong, Jiacheng Jin, and Wei Shi. "Quantitative Prediction of Outburst Flood Hazard of the Zhouqu “8.8” Debris Flow-Barrier Dam in Western China." Water 13, no. 5 (2021): 639. http://dx.doi.org/10.3390/w13050639.

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In recent years, the intensified influences of global climate change and human activities have increased the frequency of large-scale debris flow disasters. As a result, main river channels often become blocked, thus forming a disaster chain of rivers dammed by debris flow followed by outburst flooding. In order to quickly and easily reveal the dynamic process of a debris flow dam breach, and quantitatively predict the outburst flood hazard, this study takes the Zhouqu “8.8” debris flow barrier dam in Western China as an example. Based on a stability assessment, China Institute of Water Resour

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25

Dougherty, Erin, Erin Sherman, and Kristen L. Rasmussen. "Future Changes in the Hydrologic Cycle Associated with Flood-Producing Storms in California." Journal of Hydrometeorology 21, no. 11 (2020): 2607–21. http://dx.doi.org/10.1175/jhm-d-20-0067.1.

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AbstractCalifornia receives much of its precipitation from cool-season atmospheric rivers, which contribute to water resources and flooding. In winter 2017, a large number of atmospheric rivers caused anomalous winter precipitation, near-saturated soils, and a partial melting of snowpack, which led to excessive runoff that damaged the emergency spillway of the Oroville Dam. Given the positive and negative impacts ARs have in California, it is necessary to understand how they will change in a future climate. While prior studies have examined future changes in the frequency of atmospheric rivers

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26

Ralph, F. Martin, Forest Cannon, Vijay Tallapragada, et al. "West Coast Forecast Challenges and Development of Atmospheric River Reconnaissance." Bulletin of the American Meteorological Society 101, no. 8 (2020): E1357—E1377. http://dx.doi.org/10.1175/bams-d-19-0183.1.

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Abstract Water management and flood control are major challenges in the western United States. They are heavily influenced by atmospheric river (AR) storms that produce both beneficial water supply and hazards; for example, 84% of all flood damages in the West (up to 99% in key areas) are associated with ARs. However, AR landfall forecast position errors can exceed 200 km at even 1-day lead time and yet many watersheds are &lt;100 km across, which contributes to issues such as the 2017 Oroville Dam spillway incident and regularly to large flood forecast errors. Combined with the rise of wi

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27

Nield, Michael C. "Grout Curtain Construction At Bolivar Dam, Ohio." Environmental and Engineering Geoscience 24, no. 1 (2018): 121–36. http://dx.doi.org/10.2113/gseegeosci.24.1.121.

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Abstract Bolivar Dam, located in eastern Ohio, is an embankment dam constructed by the U.S. Army Corps of Engineers in 1937 as part of the Muskingum River Basin Project for flood control. As a result of seepage concerns observed at the dam during several flood events over the life of the project, seepage reduction measures, including a partial-depth seepage barrier wall through the embankment and a grout curtain in the left abutment, were designed and constructed. These dam safety modifications were constructed between 2014 and 2016. During flood events, Bolivar Dam experiences excessive seepa

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Pavlík, Vladimír. "Effects of polders on the course of floods in the watershed of the Tichá Orlice river." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 56, no. 4 (2008): 135–42. http://dx.doi.org/10.11118/actaun200856040135.

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Polders show an important water-management function in the flood-control protection of watersheds. The course of actual floods in recent decades and effects of the water works on flood flows have proved the suitability of the construction within integrated flood-control measures in particular watersheds of the Czech Republic. To determine the transformation effect of flood-control measures in watersheds mathematical modelling is an important method, which is used not only in the preparation and design of retention areas but also in dealing with the flood protection of towns and villages. Easy

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Akbari, M., A. Afshar, and S. J. Mousavi. "Multi-objective reservoir operation under emergency condition: Abbaspour reservoir case study with non-functional spillways." Journal of Flood Risk Management 7, no. 4 (2013): 374–84. http://dx.doi.org/10.1111/jfr3.12061.

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30

OGBOGU, SYLVESTER, and WILLIAMS ADU. "Life history and larval density of Cheumatopsyche digitata Mosely (Trichoptera: Hydropsychidae) in Opa Reservoir spillway, Ile-Ife, southwestern Nigeria." Zoosymposia 5, no. 1 (2011): 401–7. http://dx.doi.org/10.11646/zoosymposia.5.1.32.

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The life history and density of Cheumatopsyche digitata Mosely (Trichoptera: Hydropsychidae) were examined below Opa Reservoir in Ile-Ife, southwestern Nigeria. This caddisfly is the only species that occurs immediately below the impoundment auxiliary spillway where it closely associates with an aquatic bryophyte, Fontinalis sp. We collected larvae every month between July 2004 and June 2005 as long as larvae were available in the study site. The instar growth ratio was fairly constant and ranged from 1.198 to 1.402 (mean ± standard error = 1.285 ± 0.073) but mean head capsule width increased

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31

Kellerer-Pirklbauer, Andreas, Michael Avian, Douglas I. Benn, Felix Bernsteiner, Philipp Krisch, and Christian Ziesler. "Buoyant calving and ice-contact lake evolution at Pasterze Glacier (Austria) in the period 1998–2019." Cryosphere 15, no. 3 (2021): 1237–58. http://dx.doi.org/10.5194/tc-15-1237-2021.

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Abstract. Rapid growth of proglacial lakes in the current warming climate can pose significant outburst flood hazards, increase rates of ice mass loss, and alter the dynamic state of glaciers. We studied the nature and rate of proglacial lake evolution at Pasterze Glacier (Austria) in the period 1998–2019 using different remote-sensing (photogrammetry, laser scanning) and fieldwork-based (global navigation satellite system – GNSS, time-lapse photography, geoelectrical resistivity tomography – ERT, and bathymetry) data. Glacier thinning below the spillway level and glacier recession caused floo

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32

Oshikawa, Hideo, and Toshimitsu Komatsu. "Flood Control Mechanism of Multiple Dams Constructed in a Series Based on Cascade Method." Journal of Disaster Research 10, no. 3 (2015): 475–85. http://dx.doi.org/10.20965/jdr.2015.p0475.

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Using numerical simulation, we clarified the mechanism that the flood control capability is dramatically strengthened by using multiple serial dams efficiently, based on a new flood control concept that let dams overflow through emergency spillways. Numerical analysis results for a group of dry dams were used to quantitatively evaluate this effect and to derive an empirical formula. The conventional flood control approach sets the design high water discharge of individual dams, even when dams are constructed serially, ensuring that no overflows occurs in any of the dams, here called the “conve

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33

MUHAMMAD, S. A., A. ADNAN, A. AMIR, I. A. ALI, and D. T. SALISU. "EFFECTS OF HUMAN ACTIVITIES ON THE UTILIZATION OF SOME DAMS IN KANO STATE." Journal of Agricultural Science and Environment 18, no. 1 (2019): 151–58. http://dx.doi.org/10.51406/jagse.v18i1.1921.

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Rapid population growth coupled with climate variability especially inconsistent rainfall necessitates the construction of dams/reservoirs to augment the inadequacy of rainfall for food production, water supply and sustainable development. This study identified and assessed the effects of human activities on the function and utilization of some dams in Kano State, through field observations, interview and analysis of relevant data. The results indicated that various human activities such sand excavation along the spillway, clearing of vegetation for irrigation and farming within the perimeters

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34

Belikov, V. V., and V. N. Koterov. "Predicting the Influence of a Water-Ice Cloud Behind Boguchanskaya HPP Spillways Nos. 1 and 2 on Hydroproject Facilities in Winter Under Emergency Operating Conditions." Power Technology and Engineering 49, no. 4 (2015): 258–68. http://dx.doi.org/10.1007/s10749-015-0611-5.

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Мелихов, Виктор, Viktor Melihov, Евгений Комаров, Evgeniy Komarov, Ольга Комарова, and Ol'ga Komarova. "IRRIGATION - THE BASIS FOR INCREASING THE STABILITY OF ENTOMOCENOSES IN ARID CONDITIONS OF SOUTHEAST OF RUSSIA." Vestnik of Kazan State Agrarian University 14, no. 1 (2019): 34–39. http://dx.doi.org/10.12737/article_5ccedba9876757.12168511.

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The article presents materials of perennial (1988–2017) studies on solving problems of stabilizing the phytosanitary situation in irrigated agrocenoses. The paper presents the results of studying the species abundance and insects, the patterns of their change under the influence of irrigation in the Lower Volga region. The effect of irrigation on the change in environmental conditions by the parameters of productivity of agrobiocenoses and microclimate is shown. The difference in air temperature in irrigated by sprinkling and non-irrigated agrocenoses immediately after watering reaches 7-8° C.

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Warman, Gusti Imam, and I. Gde Budi Indrawan. "Site Investigation For Construction Of Emergency Spillway At The Jatigede Dam." Journal of Applied Geology 7, no. 1 (2015). http://dx.doi.org/10.22146/jag.16919.

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An emergency spillway has been planned to be constructed at the Jatigede Dam, West Java, to allow floodwater to flow downstream and to prevent the capacity of the main spillway to be exceeded during large flood events. The complex geology of theJatigede Dam area, however, poses a challenge to determine the suitable location for the emergency spillway construction, either in the area to the west or to the east of the embankment dam. An engineering geological mapping and landslide susceptibilityzoning were conducted to determine the engineeringgeological characteristics of the area surrounding t

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37

"Rock material performance during emergency spillway flows." International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts 29, no. 2 (1992): A76. http://dx.doi.org/10.1016/0148-9062(92)92154-5.

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"Geotechnical aspects of headcutting in emergency spillway channels." International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts 29, no. 1 (1992): A51. http://dx.doi.org/10.1016/0148-9062(92)91455-e.

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39

"Technique to evaluate risk of emergency spillway channel erosion." International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts 24, no. 6 (1987): 217–18. http://dx.doi.org/10.1016/0148-9062(87)92269-8.

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40

Singh, Amarjit. "THE KA LOKO TRAGEDY." Proceedings of International Structural Engineering and Construction 7, no. 1 (2020). http://dx.doi.org/10.14455/isec.res.2020.7(1).ldr-05.

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The North Shore of Kauai is known for its beautiful beaches, scenery, and tropical paradise. However, the community has faced adversity and tragedy due to the lack of necessary engineering inspections, failure to apply for building permits, negligence, and complacency on behalf of property owner James H. Pflueger, the State of Hawaii, and County of Kauai. The Ka Loko dam broke on March 14, 2006 and the rushing waters wreaked havoc on the community causing mass destruction and ultimately claimed the lives of seven individuals. Multiple civil lawsuits and a criminal case followed where the owner

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41

Mei, Shengyao, Shengshui Chen, Qiming Zhong, and Yibo Shan. "Effects of Grain Size Distribution on Landslide Dam Breaching—Insights From Recent Cases in China." Frontiers in Earth Science 9 (April 14, 2021). http://dx.doi.org/10.3389/feart.2021.658578.

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Landslide dams are common geological features in mountainous areas, which may have serious consequences due to sudden breaching of the dam. An effective emergency response requires rapid and accurate forecasts regarding the landslide dam breach process. However, most existing models use physical, mechanical, and erosion properties of the mean or characteristic grain sizes to represent the landslide deposits. The grain size distribution and variations in soil erodibility with the depth in the landslide dam are not considered, resulting in an incorrect estimation of the breach flow hydrograph. I

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Shayanseresht, Saeed, and Mohammad Manafpour. "A Comparative Assessment of Various Turbulence Models Applied for Simulation of Air-Water Flow Over Chute Spillway." Periodica Polytechnica Civil Engineering, August 16, 2021. http://dx.doi.org/10.3311/ppci.18036.

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Abstract:

Chute aerators have been largely used to reduce cavitation hazard in high head spillways. There is no definite turbulence model for simulating these devices in smooth spillways in spite of its importance in critical conditions. A simulation in two-phase air-water chute flow and its aerator with five different turbulence models (RNG, Standard and Realizable k–ε Models, SST and Standards k–ω Models) has been numerically investigated by Fluent software. Finite Volume and VOF methods were used for discretization of flow equations and free surface modeling. Flow depth, velocity and bottom pressure

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