back scour

简明释义

反向冲刷

英英释义

例句

1.The construction team implemented measures to prevent back scour 背部侵蚀 around the new pier.

施工队采取措施以防止新码头周围发生背部侵蚀。

2.Monitoring the riverbed is crucial to detect early signs of back scour 背部侵蚀 before it becomes a serious issue.

监测河床对于及早发现背部侵蚀的迹象至关重要，以免其成为严重问题。

3.During the storm, the river's current caused significant back scour 背部侵蚀 at the base of the bridge.

在暴风雨期间，河流的水流导致桥基处发生了显著的背部侵蚀。

4.The engineers had to reinforce the dam due to back scour 背部侵蚀 detected in the foundation.

由于基础中发现了背部侵蚀，工程师们不得不加固大坝。

5.After analyzing the site, they found that back scour 背部侵蚀 was affecting the stability of the retaining wall.

在分析现场后，他们发现背部侵蚀正在影响挡土墙的稳定性。

作文

In the realm of geology and environmental science, the term back scour refers to the erosion or removal of material from the bed of a river or stream, particularly in areas where the flow of water is redirected. This phenomenon can occur due to various factors, including changes in water flow direction, sediment transport, and the physical characteristics of the riverbed itself. Understanding back scour is crucial for engineers and environmentalists who aim to manage waterways sustainably. The process of back scour typically begins when an obstruction, such as a bridge pier or a large boulder, alters the natural flow of water. As the water moves around this obstruction, it can create localized areas of turbulence. This turbulence increases the velocity of the water in certain spots, leading to enhanced erosion. Over time, the continuous action of the flowing water can deepen and widen these scour holes, potentially compromising the structural integrity of nearby infrastructure, such as bridges or embankments. One notable example of back scour can be seen in the aftermath of heavy rainfall or flooding events. During such times, rivers may swell beyond their normal capacity, creating stronger currents that can erode the riverbed more aggressively. Engineers must monitor these conditions closely to prevent damage to critical infrastructure. For instance, if a bridge is built without considering the potential for back scour, it may become unstable as the surrounding soil is washed away. To mitigate the impacts of back scour, engineers often employ various strategies. One common approach is to install riprap or other materials along the banks and bed of a river to absorb the energy of the flowing water. This not only helps to protect the riverbed from erosion but also supports aquatic habitats by stabilizing the environment. Additionally, understanding the hydrodynamics of a river can allow for better planning and design of structures that minimize the risk of scour. In conclusion, back scour is a significant concern in the fields of civil engineering and environmental management. By recognizing the causes and effects of this phenomenon, professionals can take proactive measures to safeguard our waterways and the structures built around them. As we face increasing challenges related to climate change and extreme weather events, the importance of understanding and addressing back scour will only continue to grow. Through careful study and innovative engineering solutions, we can work towards preserving the integrity of our rivers and the ecosystems they support.

在地质和环境科学领域，术语back scour指的是河流或溪床上材料的侵蚀或去除，特别是在水流被重新引导的区域。这种现象可能由于多种因素而发生，包括水流方向的变化、沉积物运输以及河床本身的物理特性。理解back scour对工程师和环境学家来说至关重要，他们旨在可持续地管理水道。 back scour的过程通常始于一个障碍物，比如桥墩或大石头，改变了水的自然流动。当水流绕过这个障碍物时，它可能会在局部区域产生湍流。这种湍流增加了某些地方水流的速度，从而导致增强的侵蚀。随着时间的推移，持续的水流作用可以加深和扩大这些冲刷孔，可能危及附近基础设施的结构完整性，例如桥梁或堤岸。 一个显著的back scour例子可以在强降雨或洪水事件后看到。在这种时候，河流可能会超出其正常容量，形成更强的水流，从而更积极地侵蚀河床。工程师必须密切监测这些条件，以防止对关键基础设施的损害。例如，如果桥梁的建造没有考虑到back scour的潜在性，随着周围土壤的冲刷，它可能会变得不稳定。 为了减轻back scour的影响，工程师通常采用各种策略。一种常见的方法是在河流的岸边和床上安装碎石或其他材料，以吸收流动水的能量。这不仅有助于保护河床免受侵蚀，还通过稳定环境来支持水生栖息地。此外，了解河流的水动力学可以使结构的更好规划和设计成为可能，从而最小化冲刷的风险。 总之，back scour在土木工程和环境管理领域是一个重要问题。通过认识这一现象的原因和影响，专业人士可以采取主动措施来保护我们的水道及其周围的结构。随着我们面临与气候变化和极端天气事件相关的日益严峻的挑战，理解和解决back scour的重要性只会继续增长。通过认真研究和创新的工程解决方案，我们可以努力保护河流的完整性及其所支持的生态系统。