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Flooding is a burning issue in Hungary because of its geographical conditions. The topic of this article is to describe the mobile flood protection methods, which are able to accomplish the criteria of environment and sustainability. Mobile flood wall is a new solution in flood protection which is used in populated area. The design of mobile flood...
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... application of mobile flood protection dikes is a typical solution for emergency heightening. Engineering development has produced several varieties of mobile flood protection dikes like tube dikes, triangular dikes ( Fig. 1) with watertight sheeting etc. Although they are only applied in high water conditions, mobile flood protection walls are not designed for emergency operations. They are used first of all in locations where the disadvantage of a flood protection dike (or a concrete wall) is intolerable (e.g. due to traffic) or unwanted (e.g. a ...
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The advancement of modern and scientific technology has led to dataset growing in both size and complexity, exposing the need for more efficient and effective way of visualizing and analyzing data. Current software architecture, management and analysis approaches are unable to cope with the flood of data
Problem: Despites, the amount o...
Citations
... These approaches aim to achieve a harmonious blend of structural and non-structural measures while fostering greater public involvement (DID, 2009 Barrier (MFWB). The MFWB is an artificial vertical barrier engineered to temporarily restrain the rising waters of a river or waterway during seasonal or extreme weather events (Kádár, 2015). The MFWB is a flood protection system designed to protect a region from flood risks. ...
Flooding remains a persistent and ongoing challenge in Malaysia, posing continuous difficulties and hardships; therefore, combating flood risk has become a main priority for sustainable development in this country. The application of sophisticated engineering in hard structure approaches and flood control systems are often incongruous to the public. Therefore, there is a need to integrate soft engineering approaches and best practices of flood management to mitigate flood risk. There is also a need to integrate the concept of sustainable development into its planning policies towards flood hazard reduction. Mobile flood protection measures are useful as an alternative solution in flood protection and mitigation purposes. Mobile protective systems serve as a temporary solution to enhance the height of permanent flood defence structures during extreme events. They can also be deployed as emergency measures to mitigate flooding in vulnerable low-lying regions. As the available mobile systems differ in the type of material, method of installation and available protection height, a description of their features, and potential application are examined including their respective opportunities and drawbacks. This paper presents a review on different types of lightweight mobile flood wall barrier (MFWB) that were implemented to cope with floods in Malaysia with examples of application in other countries such as United Kingdom, Slovakia, and Netherlands. The MFWB products are reviewed and compared to each other according to the types, characteristics, mechanisms, drawbacks, and how these measures are integrated into spatial planning. Based on the findings, several recommendations are provided regarding enhancing flood risk management in areas prone to flooding and the way forward for Malaysia.
... As a temporary flood control equipment to deal with sudden storms and floods, it is widely used at the entrances and exits of important underground spaces in cities and towns. e first mobile flood wall in the world was installed in the urban area of Cologne, Germany in 1984, and then the same type of flood wall was put into use successively in places such as the Danube River in Austria, Baja, Hungary, and Brado in the Czech Republic [1][2][3]. At the beginning of the 21 st century, China begins to design and produce mobile flood control wall equipment. ...
The current natural environment is unpredictable with heavy rains and floods happening from time to time. In order to ensure the safety of underground workers, infrastructure, and rail transit, a mobile and expandable underground flood control wall was optimized and designed. The use of mortise-and-tenon structure splicing and modular extension design effectively increases the stability and useable area of the flood wall. The finite element analysis software was used to simulate and study the force of each component under combined loads, such as static water, dynamic water, and impact, to analyze the stability performance of the assembly such as anti-sliding, anti-tilting, and internal stress. The verification results show that when the designed and studied underground flood control wall equipment is fully deployed, the maximum stress is 220.762 MPa, and the maximum offset distance is 32.334 mm, which are all within the safe range. It provides innovative ideas for the optimization of the related flood control wall structure.
... There are usually no flood protection levees in mountainous enclosed valleys. In such cases, mobile dams have been used successfully in many places since the early 2000s (from the USA to Germany) (Kádár, 2015;Pasche, 2005). ...
The extraterrestrial impacts on our planet can be broadly divided into two groups. The first is the activity of the Sun, which is the source of life on Earth. The second is the impact of meteor showers, which cause impacts, or impact phenomena, which form small or large circular symmetrical craters. This compilation describes the physical background of these processes and their effects on the living environment. Extraterrestrial impacts ranging from small disturbances (small earthquakes) to major ones (the extinction of dinosaurs in the Upper Cretaceous in Earth’s history) can significantly impact humanity. The damage from impacts is much less likely to occur than any of the natural hazards analysed earlier, but we outline the options available to mitigate the adverse impacts.
... Removable floodwall systems can be applied to individual buildings, smaller areas, or a large scale of the infrastructure such as dams, largesize port piers, railway tunnel portals, culvert openings of expressways, openings of civil air defense structures, and urban large-scale communities to prevent flood disasters (Chen et al., 2018). Compared with traditional flood protection methods, the removable floodwall takes advantage of the low labor intensity, high work efficiency, and small seepage (Kádár, 2015). Also, a removable floodwall gives protection in case of flooding and open access to the floodplain over the remaining time. ...
Integrating and storing digital data through Building Information Modeling (BIM) and
3D Laser Scanning is of most importance in terms of visualizing project information. In
this respect, this study presents a systematic and practical approach for detecting the
assembly quality of anchor plates for a removable floodwall through the integration of
BIM and 3D laser scanning. The current methods for analyzing the assembly quality of
anchor plates heavily rely on manual inspection and contact-type measurements, which are
time-consuming and costly. Therefore, this paper examines a semi-automated method
integrating the use of BIM and 3D laser scanning technology for rapid analysis of the
assembly quality of anchor plates. In this context, the paper introduces the framework of an
automatic dimensional and surface quality assessment method. The following sections
describe the project flowchart, data collection, and quality inspection methodology. The
study employs the data of a real project located in Heihe, China, to validate the level of
technical feasibility and accuracy of the presented methods. The results indicated that the
proposed integration of BIM and 3D laser scanning has the potential to produce a semiautomated and reliable method to control the assembly quality of anchor plates.
... With the severe situation of urban flood protection in China [14], mobile flood protection systems can satisfy the different quality of life and safety requirements for the urban residents. e mobile flood protection method has been successfully applied in many American and European countries [15]. For example, in 1984, Cologne City, first installed the mobile flood protection baffle to protect against river flood. ...
... Mobile floodwalls can be installed at river dams, largesize port piers, railway tunnel portals, culvert openings of expressways, openings of civil air defense structures, and urban large-scale communities to prevent flood disasters. Compared with the traditional flood protection method, mobile floodwalls have the advantages of low-labor intensity, high-work efficiency, and small seepage over traditional flood protection methods [15]. Mobile floodwalls improve the standard of urban flood protection and can effectively prevent flood disasters under the requirement of preserving the urban landscape [16]. ...
Mobile flood protection systems provide a standardized flood protection method with high reliability. A comprehensive test site for mobile flood wall was established with the support of real applications, which provided opportunities to perform various tests. The anchor plate installation, seepage characteristics, and stress behavior of mobile flood protection systems were investigated through a process test, a water impounding test, and a post loading/unloading test. Test results indicated that installing anchor plates either by direct fixing or by preopened slots and eyes satisfy the construction and normal work requirements. However, the former is preferable over the latter. The mobile flood protection wall leaks when filled with water, and the leakage changes exponentially with the level. The leakage accelerates when the water level exceeds 1.5 m, thus registering 300 L/h at the 1.7 m level. In the post loading test (0–100 kN), concrete plastic deformation was first observed. Then, residual displacement was developed in the posts. The stressing process indicated that the failure process in the post, anchor plate, and base concrete system propagates from the concrete on both sides of the anchor plates toward the water side.
... Analysing seepage phenomenon occurred in: earth irrigation system, storages, ponds and other earth structure as dikes or earth dams is very important task to be carry out in order to avoid any threat that may come as result of any possible failure, [22]. Earliest, attention has been given generally on estimation of seepage loose regarding especially to channel system and storage dam, while nowadays is given attention both amount of water loose and impact on environmental degradation, [23]. ...
... In all cases is noticed good correlation with a determination coefiecient R 2 >0.8. The correlation between shear strength and prolognation distance i expressed through following polynomial equations, Eq. (20,21,22 ...
World experiences reveal that catastrophic floods are posing a serious threat that comes not only from them as extreme events but also as the result of adaptation measures uncertainty, (i.e. dikes). In particularly old dikes constructed earliest at the north part of Albania, during the last floods demonstrated the high uncertainty and weak spots. In this paper, the significance of the seepage investigation and stability analysis are discussed. As a case study, parts of new dikes constructed last years along the Buna River located in north part of Albania are investigated. Filling materials for these dikes are represented mostly from silt and clay. Finite element method is used to perform seepage analysis while general limit equilibrium method is
used to perform slope stability analysis. Both, seepage and slope stability analyses are done for three different scenarios: steady state, rapid filling, and rapid drawdown. Finally, it is concluded that silt-clay material used in these dike structure is posing serious uncertainty during seepage phenomenon by threatening the stability of entire dike structure especially during the transient condition (rapid filling and drawdown).
Climate change have led to extreme weather events such as higher rainfall frequency that can cause severe flooding. In Malaysia, there is an increasing trend on extreme rainfall events and short temporal rainfall, particularly during the inter-monsoon season. In order to protect private properties and public premises from flooding, Mobile Flood Wall Barrier (MFWB) has been found to be more suitable as it is less costly, easier to deploy and does not require large space. Buildings such as factories and commercial shops that have larger entrances, they would require heavy-duty type of MFWB as compared to those for residential buildings. Heavy-duty MFWB has a better ability to withstand higher hydrostatic pressure from floodwater, hence suitable for public premises and buildings in industrial and commercial areas. In this paper, various types of heavy-duty MFWB and their application will be presented and discussed. The standards for testing MFWB products presented in this paper are summarised. Some existing testing requirements are also presented. Based on the review, the mobility characteristic indicated that the heavy MFWB can be installed temporarily to prevent flooding and be removed easily to ensure no interruption to the daily activities after flood events. There are many potential advantages for flood protection, in particular, it serves as the way forward for Malaysia.
Kuching city and its surrounding urban areas frequently experience extreme high annual maximum daily rainfall (AMDR), resulting in flash floods. This study aims to carry out statistical and trend analysis of extreme AMDR events for Kuching Airport rainfall station from 1975 to 2017. From the analysis, the AMDR records a high variability with a value of 36.9% while January has the highest occurrence of AMDR with 53.5% of the total data. Findings from the linear regression plot have shown that the AMDR has a slight decreasing trend over the past four decades though the trend was insignificant. Based on the drainage design capacity of Kuching city, AMDR of magnitude 180 mm was identified as a threshold. The frequency analysis results showed that the return period of flooding events with daily rainfall exceeding 180 mm was 2.69 years. The occurrence probability of the flood event at least once in 1, 2, 3, 4 and 5 years was 0.37, 0.60, 0.75, 0.84 and 0.90, respectively. This study contributed to understanding the magnitude and frequency of extreme high AMDR which could lead to flooding events in Kuching city.
The chapter deals with the issues of water abundance and water scarcity. In general, too much water means the dangers of increased water runoff and discharge. In the first part, the different types of floods and inland excess water are summarised, along with their causes and the human and financial consequences of this natural hazard. It also deals with flash floods, a specific type of flood, which are becoming more frequent and destructive due to climate change. It details the drought due to water scarcity, which is the most serious natural hazard in many regions of the world. This hazard is regionally differed due to climate change, but its increasing size and intensity sometimes causes damage at least as severe as earthquakes. However, the spread of information about this hazard is slow by nature and therefore does not appear to be a serious problem. The risk of soil and wind erosion is also analysed in this chapter. This process is often not considered a natural hazard in the strict sense of the term, because it is generally not a natural hazard from a human point of view but can cause significant damage from an economic point of view. This chapter also looks at ways of reducing this effect.
Significant climate change has been, leading to heavy rainfall and flood flow rate increasing the last twenty years. At the same time, natural factors, such as sediment accumulation and bottom elevations, channel clogging, and anthropogenic factors: intensive floodplain construction leads to floodplain narrowing and increased flood levels. European cities have been increasingly used mobile flood protection systems as one of the elements of flood protection. The peculiarity of the mountain rivers flood in Ukraine is their short duration: 3-5 days and a significant rate of water uplift, which requires a rapid and simple installation of temporary barriers. The aim of the review is to determine the optimal mobile structures for flood protection of urban areas in conditions of intense mountain floods. The existing mobile systems and the experience of their use in the EU countries were analyzed. The cost of mobile systems significantly exceeds the cost of embankment and has no economic benefits if there is enough area for embankment construction. But in dense urban conditions, the use of mobile flood protection systems become an economically viable alternative to permanent protective structures, because they do not require additional permanent space and do not block access to the river. Flood area mapping with precise identification of the protected area should be developed and automated information and measurement system for early forecasting and notification of the relevant authorities about the floods threat should be implemented, because barriers erection is required time of average 1 hour per 100m, excluding delivery time from the storage area. The installation of mobile systems requires the involvement of human resources, which must have periodically train. The equipment must be delivered quickly to the destination, which requires the involvement of transportation equipment and additional storage area for materials. So, the main requirements for mobile flood systems: light weight, simplicity and speed of installation, its reliability, storage areas and periodic training. The systems with a pre-installed foundation of segment-type, flip walls, segment walls with high foundation and mobile tubes were analyzed. The segment walls with pre-installed foundation (underground or in the form of a parapet) satisfy all above-stated requirements in dense urban condition.
