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Journal articles on the topic 'Dam break'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 March 2023

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1

Ahmadi, Sayed, and Yoshimichi Yamamoto. "A New Dam-Break Outflow-Rate Concept and Its Installation to a Hydro-Morphodynamics Simulation Model Based on FDM (an Example on Amagase Dam of Japan)." Water 13, no. 13 (June 25, 2021): 1759. http://dx.doi.org/10.3390/w13131759.

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Dams are constructed to benefit humans; however, dam-break disasters are unpredictable and inevitable leading to economic and human life losses. The sequential catastrophe of a dam break directly depends on its outflow hydrograph and the extent of population centers that are located downstream of an affected dam. The population density of the cities located in the vicinity of dams has increased in recent times and since a dam break hydrograph relies on many uncertainties and complexities in devising a dam-break outflow hydrograph, more researches for the accurate estimation of a dam-break flood propagation, extent and topography change becomes valuable; therefore, in this paper, the authors propose a novel and simplified dam-break outflow rate equation that is applicable for sudden-partial dam breaks. The proposed equation is extensively affected by a dam-break shape. Therefore, the inference of a dam-break shape on a dam-break outflow rate is investigated in the current study by executing hydraulic experiments in a long, dry bed, frictionless and rectangular water channel connected to a finite water tank to acquire a mean break-shape factor. The proposed equation is further validated by regenerating the Malpasset dam-break hydrograph and comparing it to the existing methods and also by installing it on an existing 2D hydro-morphodynamics flood simulation model. Finally, Amagase Dam’s (arch-reaction dam in Japan) break simulation is executed as a case study. The results of the simulations revealed that the greater the height of a dam-break section, the more devastating its flood consequences would be.

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2

Luo, Chen, Ke Xu, and Yunsheng Zhao. "A TVD discretization method for shallow water equations: Numerical simulations of tailing dam break." International Journal of Modeling, Simulation, and Scientific Computing 08, no. 03 (September 2017): 1850001. http://dx.doi.org/10.1142/s1793962318500010.

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In view of the disastrous consequences of tailings dam break and its unique evolutionary process in complex areas, this paper constructs two-dimensional shallow water equations, rheological equations and mathematical models of tailings sand flows on the basis of Navier–Stokes equations (N–S equations). It performs total variation diminishing (TVD) discretization on these equations, develops forward simulation programs in MATLAB2016 and conducts numerical analyses on three kinds of dam breaks (ideal dam break, asymmetric dam break and dam break with obstacles in the downstream area). The results show that TVD discretization is effective in capturing shock waves. According to the analysis on consequences of Huangmailing Tailings Dam break, the author obtains the maximum distance of tailings sand flow, the flow rate of tailings and the time that tailings reach destinations in the downstream area, thereby providing scientific basis for disaster analyses on similar tailings dam breaks and supplying technical support for emergency rescues after disasters.

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3

Wang, Xiao Ling, Qing Song Wang, Rui Rui Sun, and Xue Fei Ao. "Study on the Gray Fuzzy Comprehensive Evaluation Model about Dam-Break Consequences." Advanced Materials Research 594-597 (November 2012): 1965–68. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.1965.

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The comprehensive evaluation of the dam-break consequences is an issue of crucial importance for defending natural disasters, protecting socio-economic and sustaining ecological development. The consequences of dam-break were analyzed, including life loss, economic loss and the social and environmental influence. The loss of life evaluation based on the improved Graham method was introduced. Depth, velocity and other hydraulic parameters of dam-break flood were obtained by the three-dimensional numerical simulation, which has proved to be a useful tool for dam-break consequences. AHP method was adopted to measure the weight of each factor. Grey fuzzy comprehensive evaluation of dam-break consequences was proposed. QING LINJING reservoir in Shenzhen was taken as a case. The results show that it will cause serious incidents once QING LINJING reservoir dam breaks.

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4

Gu, Hao, Xiao Fu, Yantao Zhu, Yijun Chen, and Lixian Huang. "Analysis of Social and Environmental Impact of Earth-Rock Dam Breaks Based on a Fuzzy Comprehensive Evaluation Method." Sustainability 12, no. 15 (August 3, 2020): 6239. http://dx.doi.org/10.3390/su12156239.

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A large proportion of the dams in China are earth-rock dams. Regarding the well-studied loss of life and economic consequences due to dam breaks, this paper introduces the causes and modes of earth-rock dam breaks and the corresponding dam-break losses in terms of the social and environmental aspects. This study formulates the evaluation index system and criteria of earth-rock dam breaks’ impact on society and the environment based on a fuzzy comprehensive evaluation method. The results show that the evaluation grade of the social and environmental impact of the dam break of the Liujiatai Reservoir was “serious”. Therefore, similar dams in China should take corresponding measures in advance to reduce the social and environmental impact of earth-rock dam breaks.

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5

Purnama, N., R. Jayadi, and Istiarto. "Dam break analysis using 1D geometry at Jatigede Dam, Sumedang." IOP Conference Series: Earth and Environmental Science 930, no. 1 (December 1, 2021): 012088. http://dx.doi.org/10.1088/1755-1315/930/1/012088.

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Abstract Dam breaks can result in flash floods which have enormous destructive power. This destructive force becomes even more significant when the dam break occurs in a dam with a large capacity. An example is the Jatigede Dam, which has a capacity of 1,060 million m3. To determine the flash flood characteristics and potential impact of the collapse of the Jatigede Dam, an analysis of the dam break was carried out using HEC-RAS software. The dam break scenario uses a Probable Maximum Flood (PMF) inflow with the partial opening of two spillway gates in the middle, which causes the dam overtopping. The Froehlich and Von Thun, and Gillette regression methods were used to defining the breach parameters. Based on the dam break analysis, the simulated flash flood of the Von Thun-Gillette method resulted in a higher velocity and lower water surface elevation than the Froehlich method. The difference in the velocity, dimension of the breach shape, water surface elevation, and discharge is caused by the breaching shape and breach formation time.

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6

Milleanisa, K. E., P. T. Juwono, R. Asmaranto, and M. Ayu. "Dam Break Analysis of Gembong Dam Using Zhong Xing HY21." IOP Conference Series: Earth and Environmental Science 930, no. 1 (December 1, 2021): 012091. http://dx.doi.org/10.1088/1755-1315/930/1/012091.

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Abstract Dams are a form of effort to conserve or protect water resources. The function of the Dam as a reservoir for water, irrigation, power generation, and flood control. However, in addition to its huge benefits, dam construction also can endanger the community’s safety, namely in the form of dam breaks. The main causes of dam break are overtopping and piping. So that analysis is needed related to dam break to minimize the impact. Based on the Zhong Xing HY21 software, the most severe impact of the break of the Gembong Dam was due to overtopping using the QInflow PMF design flood of 724.142 m3/s. It resulted in an inundation area of 54.682 km2 with a maximum inundation height of 5.129 m. As a result of the break of the Gembong Dam, 37 villages downstream of the Gembong Dam were flooded. There are 80.819 people affected by this risk. It is stated that all affected villages are at the 4th hazard classification level or very high hazard.

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7

Xu, Fu-gang, Xing-guo Yang, Jia-wen Zhou, and Ming-hui Hao. "Experimental Research on the Dam-Break Mechanisms of the Jiadanwan Landslide Dam Triggered by the Wenchuan Earthquake in China." Scientific World Journal 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/272363.

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Dam breaks of landslide dams are always accompanied by large numbers of casualties, a large loss of property, and negative influences on the downstream ecology and environment. This study uses the Jiadanwan landslide dam, created by the Wenchuan earthquake, as a case study example. Several laboratory experiments are carried out to analyse the dam-break mechanism of the landslide dam. The different factors that impact the dam-break process include upstream flow, the boulder effect, dam size, and channel discharge. The development of the discharge channel and the failure of the landslide dam are monitored by digital video and still cameras. Experimental results show that the upstream inflow and the dam size are the main factors that impact the dam-break process. An excavated discharge channel, especially a trapezoidal discharge channel, has a positive effect on reducing peak flow. The depth of the discharge channel also has a significant impact on the dam-break process. The experimental results are significant for landslide dam management and flood disaster prevention and mitigation.

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8

Goto, Dustin, and Amarjit Singh. "Ka Loko Dam Break." Journal of Legal Affairs and Dispute Resolution in Engineering and Construction 2, no. 4 (November 2010): 198–207. http://dx.doi.org/10.1061/(asce)la.1943-4170.0000036.

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9

Waskito, Tri Nugroho, M. Bisri, Lily Montarcih Limantara, and Widandi Soetopo. "Simulation of Saguling Dam Break Using the HEC-RAS Software." Journal of Hunan University Natural Sciences 49, no. 8 (August 30, 2022): 241–49. http://dx.doi.org/10.55463/issn.1674-2974.49.8.29.

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The Saguling dam is built on the cascade system of the Citarum river. The Saguling dam is located upstream of the system over the Cirata and Jatiluhur dams. Besides having the many benefits (irrigation, recreation, flood control, water storage, etc.), the Saguling dam saves the risk of big dangers in the case of the failure. The general failure or dam break reason of the Saguling dam can happen due to the internal and external factors. The internal factor is an occurrence of breach in the dam body that causes the process of piping in the top, center and low part of the dam body. Another internal factor is the mal-function of the spillway if the water discharge is too much. The external factor is the big flood discharge that can cause the overtopping. This research intends to conduct the simulation of dam failure or dam breaks in the Saguling dam. The methodology consists of data collection for the material of dam break analysis 2D like hydrology data, digital map, and technical data of dam. Then, the collected data was analyzed using the HEC-RAS software. Considering the possibilities of failure risk of Saguling dam, the simulation analysis of dam failure or dam break was performed for some scenarios and their impacts on the downstream part of the dam. The results show that the Saguling dam with the overtopping scenario has the worse impact than the piping scenario with the maximal inundation area and the possibility area of 19.39 km2. The simulation of the Saguling dam failure or dam break produces the flood discharge whose flow will reach the Cirata reservoir in 3 hours.

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10

Li, Changwen, Huabin Gao, Zhaoming Xu, and Yan Huang. "Sensitivity Analysis of Rock-Fill Dam Break Flood on Different Dam Break Durations." Open Journal of Safety Science and Technology 11, no. 03 (2021): 89–103. http://dx.doi.org/10.4236/ojsst.2021.113007.

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11

Mei, Guo Dong, and Zong Zhi Wu. "Research on the Dam-Break Hazard Vulnerability Assessment Index System and Methods of Tailings Pond." Applied Mechanics and Materials 204-208 (October 2012): 3450–56. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.3450.

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The method, using slope buckling safety factor to measure the degree of dam-break hazard, results in the unscientific conclusions of identical dam-break risk with respect to the desolate & uninhabited gobi desert and densely populated & highly economic-developed city. On the basis of vulnerability theory, a dam-break hazard vulnerability assessment index system, which comprehensively considering the inherent risks of dam-break and the intrinsic vulnerability of hazard-affected bodies, was established. The production of dam-break hazard-causing factor intensity, including the current dam height, reservoir capacity & downstream main ditch longitudinal, and accident probability by the Monte Carlo method is the inherent risk level of dam-break. The result by the multiplying physical exposure and the intrinsic vulnerability, including household fitness index & the emergency self-help index, as well as the disaster relief capacity is the hazard-affected body vulnerability. Results are contributable to further consummate the vulnerability risk assessment technology and the reliability of dam-break hazard.

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12

Shen, Zhao Wei, Cun Hong Pan, Sui Gao Ye, Hai Yan Lu, and Li Hui Wang. "The Economic Loss Estimate of Dam Break Based on 2D Dam Break-Wave Numerical Simulation." Applied Mechanics and Materials 405-408 (September 2013): 2457–62. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.2457.

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A 2D numerical model based on Boltzmann equation and an unstructured FVM grid with a kinetic flux vector splitting (KFVS) scheme was developed to simulate dam break-wave. As an example, propagation of the dam-break wave of one reservoir dam at Yuhang District of Hangzhou in Hangzhou was simulated by this model. Using regional economy, population, and geography data of 2008, the economic loss caused by dam failure was evaluated. The result shows that total economic loss is about 20% of the GDP in Yuhang, which is close to the conclusion of some existing researches. It is foreseeable that this method would to be used more widely in Zhejiang for dam safety management.

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13

Khan, Rehan, Milind Debe, Supriya Sonpipale, Karan Pawar, and Dr Ankur Kapoor. "Dam Break Analysis of Mullaperiyar Dam using HEC-RAS." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (May 31, 2022): 3493–98. http://dx.doi.org/10.22214/ijraset.2022.42856.

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Abstract: Mullaperiyar dam, with an active capacity of 2,99,13,00,000 m3 is constructed on the Periyar River in Kerala. It is a controversial issue between two states Kerala and Tamil Nadu. Even though the dam is situated in Kerala but the benefits of the dam is being enjoyed by Tamil Nadu. The age of the dam is 119 years which is more than its design period i.e. 50 years. As it is an old dam, there is a threat for a dam to fail, Hence the dam is taken for the present study. This paper presents a case study of Dam Break Analysis of Mullaperiyar Dam using HEC-RAS software which involves the prediction of a dam break, River reach, Discharge, unsteady flow equation, etc. Keywords: Mullaperiyar Dam, Dam Break Analysis, HEC-RAS, Periyar River. Etc

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14

Leal, João Gouveia, Rui Miguel Ferreira, and António Heleno Cardoso. "Dam-Break Wave-Front Celerity." Journal of Hydraulic Engineering 132, no. 1 (January 2006): 69–76. http://dx.doi.org/10.1061/(asce)0733-9429(2006)132:1(69).

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15

Hunt, B. "An inviscid dam-break solution." Journal of Hydraulic Research 25, no. 3 (May 1987): 313–27. http://dx.doi.org/10.1080/00221688709499273.

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16

Wang, Xiao Ling, Zheng Yin Zhou, Rui Rui Sun, and Sha Sha Zhou. "Fuzzy Hierarchy Comprehensive Evaluation on Dam-Break Risk Analysis." Advanced Materials Research 383-390 (November 2011): 2151–55. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.2151.

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Consequences of dam-break are affected by many factors, which are of a certain degree of ambiguity. Influencing factors of dam-break consequences are summarized in this paper. At first, weights of influencing factors are determined by means of Analytic Hierarchy Process （AHP）, thereafter, the fuzzy hierarchy synthesis evaluation model for dam failure is developed. Finally, Qing Linjing reservoir located in Shenzhen of China is taken as a case. The fuzzy comprehensive evaluation for the risk analysis of dam-break and the risk grades of dam-break consequences are obtained. The results indicate that it is reasonable and valuable to evaluate the risk of dam-break by using fuzzy comprehensive evaluation.

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17

Peng, M., and L. M. Zhang. "Dynamic decision making for dam-break emergency management – Part 1: Theoretical framework." Natural Hazards and Earth System Sciences 13, no. 2 (February 18, 2013): 425–37. http://dx.doi.org/10.5194/nhess-13-425-2013.

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Abstract. An evacuation decision for dam breaks is a very serious issue. A late decision may lead to loss of lives and properties, but a very early evacuation will incur unnecessary expenses. This paper presents a risk-based framework of dynamic decision making for dam-break emergency management (DYDEM). The dam-break emergency management in both time scale and space scale is introduced first to define the dynamic decision problem. The probability of dam failure is taken as a stochastic process and estimated using a time-series analysis method. The flood consequences are taken as functions of warning time and evaluated with a human risk analysis model (HURAM) based on Bayesian networks. A decision criterion is suggested to decide whether to evacuate the population at risk (PAR) or to delay the decision. The optimum time for evacuating the PAR is obtained by minimizing the expected total loss, which integrates the time-related probabilities and flood consequences. When a delayed decision is chosen, the decision making can be updated with available new information. A specific dam-break case study is presented in a companion paper to illustrate the application of this framework to complex dam-breaching problems.

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18

Shahrim, M. F., and F. C. Ros. "Dam Break Analysis of Temenggor Dam Using HEC-RAS." IOP Conference Series: Earth and Environmental Science 479 (July 14, 2020): 012041. http://dx.doi.org/10.1088/1755-1315/479/1/012041.

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19

Nabilah, R. A., D. Sutjiningsih, E. Anggraheni, and S. Murniningsih. "Dam break analysis of Situ Gintung Dam collapse reconstruction." IOP Conference Series: Earth and Environmental Science 599 (November 25, 2020): 012064. http://dx.doi.org/10.1088/1755-1315/599/1/012064.

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20

Kho, F. W. L., P. L. Law, S. H. Lai, Y. W. Oon, L. H. Ngu, and H. S. Ting. "Quantitative dam break analysis on a reservoir earth dam." International Journal of Environmental Science & Technology 6, no. 2 (March 2009): 203–10. http://dx.doi.org/10.1007/bf03327623.

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21

Wang, Xiao Ling, Xue Fei Ao, Rui Rui Sun, and Wei Ping Guo. "The Comprehensive Risk Analysis of Dam-Break Consequences Based on Numerical Simulation." Applied Mechanics and Materials 229-231 (November 2012): 1850–53. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.1850.

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Dam break is a serious social disaster, which causes a great deal of damage to the society and environment. In this paper, a 3D turbulence model coupled with the Volume of Fluid (VOF) method for the dam-break flood propagating is established, the loss of life resulting from dam failure is calculated by the modified Graham method, a statistical method is used for the economic loss, the main factors for social and environmental impacts are introduced, and finally the linear weighting method is carried out for comprehensive evaluation and analysis of dam-break consequences. The dam-break consequences of Dongwushi reservoir in Handan is taken as a case, the life loss, the economic loss, as well as social and environmental impacts are analyzed, and then a comprehensive evaluation of the dam-break consequences carried out.

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22

Aureli, Francesca, Andrea Maranzoni, and Gabriella Petaccia. "Review of Historical Dam-Break Events and Laboratory Tests on Real Topography for the Validation of Numerical Models." Water 13, no. 14 (July 17, 2021): 1968. http://dx.doi.org/10.3390/w13141968.

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Dam break inundation mapping is essential for risk management and mitigation, emergency action planning, and potential consequences assessment. To quantify flood hazard associated with dam failures, flooding variables must be predicted by efficient and robust numerical models capable to effectively cope with the computational difficulties posed by complex flows on real topographies. Validation against real-field data of historical dam-breaks is extremely useful to verify models’ capabilities and accuracy. However, such catastrophic events are rather infrequent, and available data on the breaching mechanism and downstream flooding are usually inaccurate and incomplete. Nevertheless, in some cases, real-field data collected after the event (mainly breach size, maximum water depths and flood wave arrival times at selected locations, water marks, and extent of flooded areas) are adequate to set up valuable and significant test cases, provided that all other data required to perform numerical simulations are available (mainly topographic data of the floodable area and input parameters defining the dam-break scenario). This paper provides a review of the historical dam-break events for which real-field datasets useful for validation purposes can be retrieved in the literature. The resulting real-field test cases are divided into well-documented test cases, for which extensive and complete data are already available, and cases with partial or inaccurate datasets. Type and quality of the available data are specified for each case. Finally, validation data provided by dam-break studies on physical models reproducing real topographies are presented and discussed. This review aims at helping dam-break modelers: (a) to select the most suitable real-field test cases for validating their numerical models, (b) to facilitate data access by indicating relevant bibliographic references, and (c) to identify test cases of potential interest worthy of further research.

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23

Li, Zongkun, Wei Li, and Wei Ge. "Weight analysis of influencing factors of dam break risk consequences." Natural Hazards and Earth System Sciences 18, no. 12 (December 19, 2018): 3355–62. http://dx.doi.org/10.5194/nhess-18-3355-2018.

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Abstract. There are numerous influencing factors of the risk consequences of dam break. The scientific and reasonable index system and its weight distribution are some of the key elements for comprehensive evaluation of the dam break risk. Taking into consideration 20 factors, including hazards, exposure and vulnerability, the evaluation index system of the consequences of dam break risk is constructed. Using the Statistical Cloud Model (SCM) to improve the entropy method, we establish the weight calculation model of the influencing factors of dam break risk consequences. The results shows that the top five factors with the highest weight are risk population, flood intensity, alert time, risk understanding and distance from the dam. Compared to traditional algebraic weight calculation methods, the result is basically consistent with the algebraic weight distribution, and increases the range by 2.03 times, supporting a more scientific basis for recognizing and evaluating dam break risk consequences.

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24

Ayu, M., P. T. Juwono, R. Asmaranto, and K. E. Milleanisa. "Dam Break Analysis of Salomekko Dam Using Zhong Xing HY21." IOP Conference Series: Earth and Environmental Science 930, no. 1 (December 1, 2021): 012092. http://dx.doi.org/10.1088/1755-1315/930/1/012092.

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Abstract Every Dam must have an emergency plan document in which there is a dam collapse analysis. Based on previous research, it is stated that dam collapse often occurs due to runoff and piping. In this case, the Dam that will be studied is Salomekko Dam, located in Bone Regency. Salomekko Dam is located in the Salomekko Hamlet of Ulu Balang Village, Salomekko Subdistrict, Bone Regency, South Sulawesi Province, which provides water for agricultural irrigation. Analysis of the collapse of the Salomekko Dam was carried out due to overtopping and piping. The stillness of the air overflows through the top of the Dam. At the same time, the piping is caused by seepage in the dam body, which carries the dam material gradually. Analysis of the Salomekko Dam collapse using the Zhong Xing HY21 application can produce maps of flood inundation distribution, flood outflow hydrographs, and flood times. Based on these results, it can also have a hazardous impact to define boundaries of disaster-affected areas.

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25

BALMFORTH, N. J., J. VON HARDENBERG, and R. J. ZAMMETT. "Dam-breaking seiches." Journal of Fluid Mechanics 628 (June 1, 2009): 1–21. http://dx.doi.org/10.1017/s0022112009005825.

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Experimental and theoretical models are used to explore the break of a moraine dam by catastrophic erosional incision initiated by an overtopping wave. The experiments are conducted in a rectangular tank with an erodible barrier made from sand and grit. Theory combines shallow-water hydrodynamics with an empirical model of erosion. The models confirm that dams can be broken by a catastrophic incision. However, the displacement wave does not break the dam in its first passage but excites a long-lived seiche that repeatedly washes over the dam. The cumulative erosion of the downstream face by the overtopping seiches eventually allows an incipient channel to form, and catastrophic incision follows. Estimates are presented of the strength of the initial disturbance required to break the dam, the maximum discharge and the duration of the runaway incision.

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26

Putri, Putu Indah Dianti, Rifqi Fauzan Iskandar, Mohammad Bagus Adityawan, Hadi Kardhana, and Dian Indrawati. "2D Shallow Water Model for Dam Break and Column Interactions." Journal of the Civil Engineering Forum 6, no. 3 (September 16, 2020): 237. http://dx.doi.org/10.22146/jcef.54307.

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Dam break causes disastrous effects on the surrounding area, especially at the downstream, therefore, there is a need for accurate and timely predictions of dam break propagation to prevent both property damage and loss of life. This study aimed to determine the movement of dam-break flow in the downstream area by solving the Shallow Water Equations (SWE) or Saint Venant Equations which are based on the conservation of mass and momentum derived from Navier Stokes equation. The model was generated using a finite difference scheme which is the most common and simplest method for dam-break modeling while Forward Time Central Space (FTCS) numerical scheme was applied to simulate two-dimensional SWE. Moreover, the accuracy of the numerical model was checked by comparing its results with the analytic results of one-dimensional cases and a relatively small value of error was found in comparison to the analytic models as indicated with the RMSE values close to 0. The numerical to the two-dimensional models were also compared to a simple dam break in a flume and dam break with column interactions and the wave propagation in both cases was observed to become very close at a certain time. The model, however, used numerical filter (Hansen) to reduce the oscillations or numerical instability. The simulation and analysis, therefore, showed the ability of the numerical scheme of FTCS to resolve both cases of the simple dam break and dam break with column interactions in the Two-dimensional Shallow Water.

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27

Umbara, Raditya Panji. "Simulasi Numerik Persamaan Gelombang Air Dangkal untuk Kasus Bendungan Bobol." Jurnal ALAMI : Jurnal Teknologi Reduksi Risiko Bencana 5, no. 1 (July 29, 2021): 31–38. http://dx.doi.org/10.29122/alami.v5i1.4725.

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Technological failure and natural disasters that caused the dam-break resulted in huge losses, both material loss and loss of life. The mathematical model for the dam-break can use the shallow water equation. In this paper, modeling the dam-break in two dimensions is solved by using the finite volume method with a stagerred-grid scheme. The staggered-grid scheme produces more accurate and robust when compared to the Lax-Friedrics scheme. The stability of the water waves on the part of the damaged dam wall is also well preserved using a staggered-grid scheme. Modeling a dam-break with real bathymetric data will be a challenge for further research, because it involves a more complex geometry.

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28

Mei, Guo Dong, and Zong Zhi Wu. "Study on Social Risk Evaluation Index System for Tailings Pond Dam-Break Based on the Vulnerability Theory." Advanced Materials Research 594-597 (November 2012): 2301–8. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.2301.

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In allusion to the status quo of deficient in evaluation theory and methods on the social risk of dam-break, this paper established 24 index systems for the evaluation of dam-break social risk composed by the dam-break hazard intensity, accident probability, hazard-affected body inherent vulnerability and disaster relief capacity. The quantitative calculation formula has also been put forward for evaluation indexes. In line with the Delphi method, a judgment matrix on the social risk caused by dam-break has been constructed, and has obtained the weight of each index by virtue of analytic hierarchy process. The results show the internal friction angle, the downstream main ditch longitudinal gradient, the current dam height and the monitoring & forecasting capacity are the key indicators that affect the social risks of dam-break. The results of this study help to further enhance and improve the technical level of risk evaluation for the tailings pond.

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29

Hu, Liangming, Xu Yang, Qian Li, and Shuyu Li. "Numerical Simulation and Risk Assessment of Cascade Reservoir Dam-Break." Water 12, no. 6 (June 17, 2020): 1730. http://dx.doi.org/10.3390/w12061730.

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Despite the fact that cascade reservoirs are built in a large number of river basins nowadays, there is still an absence of studies on sequential embankment dam-break in cascade reservoirs. Therefore, numerical simulations and risk analyses of cascade reservoir dam-break are of practical engineering significance. In this study, by means of contacting the hydraulic features of upstream and downstream reservoirs with flood routing simulation (FRS) and flood-regulating calculation (FRC), a numerical model for the whole process of cascade reservoir breaching simulation (CRBS) is established based on a single-embankment dam-break model (Dam Breach Analysis—China Institute of Water Resources and Hydropower Research (DB-IWHR)). In a case study of a fundamental cascade reservoir system, in the upstream Tangjiashan barrier lake and the downstream reservoir II, the whole process of cascade reservoir dam-break is simulated and predicted under working schemes of different discharge capacities, and the risk of cascading breaching was also evaluated through CRBS. The results show that, in the dam-break of Tangjiashan barrier lake, the calculated values of the peak outflow rate are about 10% more than the recorded data, which are in an acceptable range. In the simulation of flood routing, the dam-break flood arrived at the downstream reservoir after 3 h. According to the predicted results of flood-regulating calculations and the dam-break simulation in the downstream reservoir, the risk of sequential dam-break can be effectively reduced by setting early warnings to decrease reservoir storage in advance and adding a second discharge tunnel to increase the discharge capacity. Alongside the simulation of flood routing and flood regulation, the whole process of cascade dam-break was completely simulated and the results of CRBS tend to be more reasonable; CRBS shows the great value of engineering application in the risk assessment and flood control of cascade reservoirs as an universal numerical prediction model.

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30

Kung, Chen Shan. "Uncertainty in Dam Break Flow Simulation." Hydrology Research 20, no. 4-5 (August 1, 1989): 249–56. http://dx.doi.org/10.2166/nh.1989.0019.

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The flow caused by a dam breaking across its entire length can be approximated by a one-dimensional, unsteady flow model in form of the St. Venant equations. In this model, the flow is governed by the river geometry and the river roughness, which is quantified by Manning's coefficient. The roughness characteristics are generally difficult to estimate under natural conditions. Thus, the estimates of the Manning's coefficient will in general be subject to uncertainty. In this paper, the uncertainty in the discharge and depth hydrographs due to the uncertainty in estimating the roughness characteristics of a river, is investigated. A specific case of the Noppikoski dam in Sweden that failed in 1985 is used to illustrate the sensitivity of the flow simulation on the roughness coefficient. The analysis shows that the uncertainty in the dam break flow simulation due to the uncertainty in estimating Manning's coefficient, is significant. The uncertainty is larger at greater distances from the dam, and is greater for the discharge hydrograph than for the depth hydrograph.

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31

Shu, Yong Bao, Pei Liang Li, and Zhong Xue Li. "Risk Assessment Regarding Tailings Dam Break." Advanced Materials Research 433-440 (January 2012): 1864–68. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.1864.

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An assessment approach in regard to tailings dam break would be analyzed and established in aspects of life, property and environment & resources loss in the essay. Tailings bam break hits local social economy varying with region as a result of particular and specialized space diversity. With the simple and practicable approach, it is quite reasonable to accomplish quantitative assessment of risk as well as review controlling priority to potential risk arising from tailings reservoir.

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32

Mohapatra, Pranab K. "Rating Curves for Dam-Break Flows." Journal of Hydrologic Engineering 15, no. 1 (January 2010): 57–60. http://dx.doi.org/10.1061/(asce)he.1943-5584.0000143.

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Miller, Sky, and M. Hanif Chaudhry. "Dam‐break Flows in Curved Channel." Journal of Hydraulic Engineering 115, no. 11 (November 1989): 1465–78. http://dx.doi.org/10.1061/(asce)0733-9429(1989)115:11(1465).

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Paquier, A., and O. Robin. "CASTOR: Simplified Dam-Break Wave Model." Journal of Hydraulic Engineering 123, no. 8 (August 1997): 724–27. http://dx.doi.org/10.1061/(asce)0733-9429(1997)123:8(724).

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Khan, Abdul Aziz, Peter M. Steffler, and Robert Gerard. "Dam-Break Surges with Floating Debris." Journal of Hydraulic Engineering 126, no. 5 (May 2000): 375–79. http://dx.doi.org/10.1061/(asce)0733-9429(2000)126:5(375).

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Zoppou, C., and S. Roberts. "Explicit Schemes for Dam-Break Simulations." Journal of Hydraulic Engineering 129, no. 1 (January 2003): 11–34. http://dx.doi.org/10.1061/(asce)0733-9429(2003)129:1(11).

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Chanson, H., S. Jarny, and P. Coussot. "Dam Break Wave of Thixotropic Fluid." Journal of Hydraulic Engineering 132, no. 3 (March 2006): 280–93. http://dx.doi.org/10.1061/(asce)0733-9429(2006)132:3(280).

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Stolle, Jacob, Behnaz Ghodoosipour, Caren Derschum, Ioan Nistor, Emil Petriu, and Nils Goseberg. "Swing gate generated dam-break waves." Journal of Hydraulic Research 57, no. 5 (September 17, 2018): 675–87. http://dx.doi.org/10.1080/00221686.2018.1489901.

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Zhao, Xuanyu, Dongfang Liang, and Mario Martinelli. "MPM simulations of dam-break floods." Journal of Hydrodynamics 29, no. 3 (June 2017): 397–404. http://dx.doi.org/10.1016/s1001-6058(16)60749-7.

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Liong, S. Y., C. C. Tan, W. A. M. Alwis, and S. Selvalingam. "Computer-aided dam break flow routing." Advances in Engineering Software and Workstations 13, no. 3 (May 1991): 110–15. http://dx.doi.org/10.1016/0961-3552(91)90001-k.

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41

Pilotti, Marco, Andrea Maranzoni, Luca Milanesi, Massimo Tomirotti, and Giulia Valerio. "Dam-break modeling in alpine valleys." Journal of Mountain Science 11, no. 6 (November 2014): 1429–41. http://dx.doi.org/10.1007/s11629-014-3042-0.

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., Anila C. George. "DAM BREAK ANALYSIS USING BOSS DAMBRK." International Journal of Research in Engineering and Technology 04, no. 23 (October 25, 2015): 103–8. http://dx.doi.org/10.15623/ijret.2015.0423018.

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George, Anila C., and B. Thulasidharan Nair. "Dam Break Analysis Using BOSS DAMBRK." Aquatic Procedia 4 (2015): 853–60. http://dx.doi.org/10.1016/j.aqpro.2015.02.107.

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44

Brufau, P., and P. Garcia-Navarro. "Two-dimensional dam break flow simulation." International Journal for Numerical Methods in Fluids 33, no. 1 (May 15, 2000): 35–57. http://dx.doi.org/10.1002/(sici)1097-0363(20000515)33:1<35::aid-fld999>3.0.co;2-d.

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45

Goater, Alexander J. N., and Andrew J. Hogg. "Bounded dam-break flows with tailwaters." Journal of Fluid Mechanics 686 (September 27, 2011): 160–86. http://dx.doi.org/10.1017/jfm.2011.317.

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AbstractThe gravitationally driven collapse of a reservoir into an initially stationary layer of fluid, termed the tailwater, is studied using the nonlinear shallow water equations. The motion is tackled using the hodograph transformation of the governing equation which allows the solutions for velocity and depth of the shallow flowing layer to be constructed by analytical techniques. The front of the flow emerges as a bore across which the depth of the fluid jumps discontinuously to the tailwater depth. The speed of the front is initially constant, but progressively slows once the finite extent of the reservoir begins to influence the motion. There then emerges a variety of phenomena depending upon the depth of the tailwater relative to the initial depth of the reservoir. Provided that the tailwater is sufficiently deep, a region of quiescent fluid emerges adjacent to the rear wall of the reservoir, followed by a region within which the velocity is negative. Also it is shown that for non-vanishing tailwater depths, continuous solutions for the velocity and height of the flowing layer breakdown after a sufficient period and develop an interior bore, the location and time of inception of which are calculated directly from quasi-analytical solutions.

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46

Yakti, Bagus Pramono, Mohammad Bagus Adityawan, Mohammad Farid, Yadi Suryadi, Joko Nugroho, and Iwan Kridasantausa Hadihardaja. "2D Modeling of Flood Propagation due to the Failure of Way Ela Natural Dam." MATEC Web of Conferences 147 (2018): 03009. http://dx.doi.org/10.1051/matecconf/201814703009.

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A dam break induced-flood propagation modeling is needed to reduce the losses of any potential dam failure. On the 25 July 2013, there was a dam break generated flood due to the failure of Way Ela Natural Dam that severely damaged houses and various public facilities. This study simulated the flooding induced by the failure of Way Ela Natural Dam. A two-dimensional (2D) numerical model, HEC-RAS v.5, is used to simulate the overland flow. The dam failure itself is simulated using HECHMSv.4. The results of this study, the flood inundation, flood depth, and flood arrival time are verified by using available secondary data. These informations are very important to propose mitigation plans with respect to possible dam break in the future.

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Ju, Hai Yan, Gui Qing Gao, Qiu Xiang Li, and Jian Hua Li. "Analysis of Safety and Risk Factors about the Tailings Dam in the Mental Mines." Advanced Materials Research 594-597 (November 2012): 299–302. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.299.

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Tailings dam is a potential risk source in the metal mines, once the tailings dam break, it will not only lead to tremendous loss in people’s lives and property, but also result in serious environmental pollution. Basing on the accidents of tailings dam failure at home, the dam failure causes are analyzed, some technology and management suggestions about decreasing dam-break accident are put forward, which provide reference for safety management to tailings dam.

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Ravena Maitsa, Tias, M. Gilang Indra Mardika, Mohammad Bagus Adityawan, Dhemi Harlan, Dyah Kusumastuti, and Arno Adi Kuntoro. "2D numerical simulation of urban dam break and its effect to building using lax scheme with numerical filter." E3S Web of Conferences 156 (2020): 04003. http://dx.doi.org/10.1051/e3sconf/202015604003.

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Dam-break is one of the disasters that can occurred due to earthquake. The earthquake vibration may damage the dam construction and therefore causing a dam-break flow. The flow can cause severe destruction to the downstream urban area. Dam-break modeling offers a way to analyze its effect of buildings. In this study, a 2D model for analyzing dam break flow is developed based on the Saint Venant equations and solved using Lax Scheme. The initial condition of the modelling is a rectangular channel with obstacles at both sides of the channel and two similar columns in the middle of the channel. These obstacles are considered as buildings in an urban area. Numerical filter is used to increase the stability of the simulation. The developed model is able to perform well in simulating a case of urban dam-break based on a previous experiment. In addition, the applied numerical filter is able to handle shock, therefore maintaining the stability of the model while reducing the simulation time without the needs to use a higher order numerical scheme.

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Li, Dan Dan, and Lei Li. "Analysis of Human Factors in Dam-Break Accidents." Applied Mechanics and Materials 170-173 (May 2012): 1944–47. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.1944.

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Now human error has caused lots of dam-break accidents home and abroad, but there is few studies about the human error in dam-break accidents. So more than 3500 dam-break accidents from 1954 to 2010 were researched and three of them were exactly analyzed in the paper to find out the real pattern and connection, in order to reduce and prevent similar mistakes happening again and meanwhile provide some positive reference.

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50

Seker, D. Z., S. Kabdasli, and B. Rudvan. "Risk assessment of a dam-break using GIS technology." Water Science and Technology 48, no. 10 (November 1, 2003): 89–95. http://dx.doi.org/10.2166/wst.2003.0546.

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Flood disasters cause massive loss of human lives and immense damage to the infrastructure and economic activities, not only in Turkey but also all over the world. Governments consider several long-term and short-term precautions for flood control. The numerical simulation of dam-break problems could be accomplished with geographic information systems and innovation maps. Spread of the flood wave after a dam break can be predicted using these enabling technologies. This kind of advanced modelling technology is becoming an inevitable tool for the decision-making process. Data produced by GIS are used as initial values for FLDWAV. ArcView GIS has been used to produce a Digital Elevation Model and visualization of dam-break effects and propagation of a possible flood wave. Using GIS techniques and hydrologic modelling software, possible effects and damage of a dam-break flood have been investigated and results were simulated to show significant dam break effects on the region.

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