Investigation of trees as natural protective barriers using simulated blast environment

Gan, Edward Chern Jinn; Remennikov, Alexander; Ritzel, David V.

doi:10.1016/j.ijimpeng.2021.104004

Cited by 12 publications

(4 citation statements)

References 14 publications

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“…The establishment of green areas can mitigate the impacts of emerging risks. For example, Gebbeken et al (2017) found that a vegetation barrier could mitigate up to 62% of a blast impact, which is achieved by the dissipation of shock waves (Gan et al, 2021). On the other hand, vegetation establishment can also improve air quality by removing particles and gas from the atmosphere (Janhäll, 2015).…”

Section: Discussionmentioning

confidence: 99%

From risk assessment to land planning. The case of a trace element‐contaminated area in Chile

Mondaca,

Berasaluce,

Larraguibel‐González

et al. 2024

Land Degrad Dev

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While abundant scientific literature focuses on diagnosing contaminated areas, solutions with a scientific base are far from balanced. This is the case of the Quintero‐Puchuncaví Bay, a widely known contaminated area in the central coast of Chile. Here, arsenic in soils surrounding the industrial complex has been reported as a threat to human health. However, land planning based on As contamination becomes a challenge since the whole area is identified as contaminated. Such a lack of land‐planning constrains the occupation and remediation of contaminated soil leading to a brownfield‐like landscape. To face this challenge, we proposed using a geospatial decision support system (S‐DSS) to integrate the contamination assessment, health and ecosystem risks, and potential land uses. When characterizing soil arsenic concentration thresholds for different land uses in a S‐DSS, we could categorize the land in suitable, caution, and unsuitable areas (based on human health risks). This way, we unravel areas with potential use in the current condition while also discerning caution and unsuitable categories, that can undergo extensive and intensive remediation techniques. Similarly, we took a conservational approach to estimate emerging risk from the industrial complex associated to explosions. Altogether, it highlights the potential of S‐DSS to integrate different geographic information. We finally feature two APPs regarding current land‐use suitability and a modeled one considering future arsenic emissions.

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Section: Discussionmentioning

confidence: 99%

From risk assessment to land planning. The case of a trace element‐contaminated area in Chile

Mondaca,

Berasaluce,

Larraguibel‐González

et al. 2024

Land Degrad Dev

View full text Add to dashboard Cite

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“…The role of trees in mitigating a blast wave were further explored recently by Gan et al (2021) using a large shock tube blast wave simulator. Two Juniperus Spartan trees, 1.6 m high, were subjected to varying blast loads (25–50 kPa, ∼ 15 ms) and overpressure and impulse reductions of up to 20% were measured on a target wall behind the trees.…”

Section: Indirect Loading: Hybrid Typesmentioning

confidence: 99%

Blast wave interaction with structures – An overview

Isaac

Alshammari

Pickering

et al. 2022

International Journal of Protective Structures

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Blast–obstacle interaction is a complex, multi-faceted problem. Whilst engineering-level tools exist for predicting blast parameters (e.g. peak pressure, impulse and loading duration) in geometrically simple settings, a blast wave is fundamentally altered upon interaction with an object in its path, and hence, the loading parameters are themselves affected. This article presents a comprehensive review of key research in this area. The review is formed of five main parts, each describing: the direct loading of a blast wave on the surface of a finite-sized structure; the modified pressure of the blast wave in the wake region of three main obstacle types – blast walls, obstacles, wall/obstacle hybrids; and finally, a brief description of some methods for predicting loading parameters in such blast–obstacle interaction settings. Key findings relate to the mechanisms governing blast attenuation, for example, diffraction, reflection (diverting away from the target structure), expansion/volume increase, vortex creation/growth, as well as obstacle properties influencing these, such as porosity (blockage ratio), obstacle shape, number of obstacles/rows, arrangement and surface roughness.

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“…Gebbeken et al [18] analyzed barriers formed by two types of plants (Cherry laurel and Thuja), where Thuja was able to reduce the overpressure peaks behind the barrier by more than 60%. In a controlled environment (shock tube), Gan et al [19] investigated the Juniperus Spartan plant; they found up to 23% reduction in overpressure behind the barrier formed by this vegetation. Under the effect of shock wave loading, masonry walls were analyzed by Browning et al [20] experimentally and numerically.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of physical barriers to mitigate the gas tank explosion effects using computational fluid dynamics

Moura,

Costa Neto,

Doz

2024

Rev. IBRACON Estrut. Mater.

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In many urban buildings, there is the presence of gas central storage, which contain pressurized tanks. One of the main risks in these places is an explosion, which may or may not is followed by fire. In general, the shock wave formed by this phenomenon is disastrous and can cause material damage and even fatalities. Recent research has contributed to understanding protective systems against this phenomenon; however, it is necessary to advance in developing protection devices for gas central storage. From this perspective, the implementation plan of these devices in order to mitigate the harmful effects of explosions are essential to raise the safety level in construction. Physical protection barriers are appropriate solutions for the protection of buildings, especially in places where it is impossible to bury gas reservoirs. In addition to the potential to reduce back pressure levels, protective walls, when properly designed, can also prevent the spread of debris from the explosion. Another kind of barrier that influences the propagation of the shock wave close to the ground is the ditches, whose function is related to the absorption and redirection of wave energy. Understanding the positioning, geometry, and overpressure attenuation potential of physical barriers are essential in developing safer and more reliable projects. This article aims to study protective barriers in buildings with pressurized gas tanks. The study was developed numerically using the Autodyn software. This program is a tool based on computational fluid dynamics (CFD). The protective capacity of the proposed types of protection regarding the mitigation of incident overpressures was evaluated qualitatively and quantitatively.

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Investigation of trees as natural protective barriers using simulated blast environment

Cited by 12 publications

References 14 publications

From risk assessment to land planning. The case of a trace element‐contaminated area in Chile

From risk assessment to land planning. The case of a trace element‐contaminated area in Chile

Blast wave interaction with structures – An overview

Numerical analysis of physical barriers to mitigate the gas tank explosion effects using computational fluid dynamics

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