partially drowned weir

简明释义

局部潜堰

英英释义

例句

1.During the heavy rains, the partially drowned weir became a hazard for small boats navigating the area.

在大雨期间，部分淹没的堰对在该地区航行的小船构成了危险。

2.The partially drowned weir altered the water levels upstream, impacting irrigation systems.

部分淹没的堰改变了上游的水位，影响了灌溉系统。

3.The river's flow was so strong that it created a partially drowned weir, which affected the local fish population.

河流的流速太强，形成了一个部分淹没的堰，这影响了当地的鱼类种群。

4.Wildlife biologists monitored the habitat changes caused by the partially drowned weir.

野生动物生物学家监测了由部分淹没的堰引起的栖息地变化。

5.Engineers studied the effects of the partially drowned weir on sediment deposition in the river.

工程师们研究了部分淹没的堰对河流沉积物沉积的影响。

作文

In the realm of civil engineering and hydrology, various structures are designed to manage water flow and maintain ecological balance. One such structure is a weir, which is essentially a barrier built across a river or stream to regulate water levels. However, there are instances when a weir may not function as intended due to changing water levels or environmental conditions. This brings us to the concept of a partially drowned weir, which refers to a weir that is submerged to some extent but still allows water to flow over its crest. Understanding this phenomenon is crucial for engineers and environmentalists alike, as it has significant implications for water management and ecosystem health.A partially drowned weir can occur during periods of heavy rainfall or flooding when the upstream water level rises significantly. In such cases, the weir's ability to control water flow diminishes, leading to potential overflow and erosion downstream. This situation can disrupt aquatic habitats, as many species rely on specific water levels for breeding and feeding. For instance, fish populations may decline if their spawning grounds are altered due to changes in water flow caused by a partially drowned weir. Additionally, sediment transport may be affected, which can further impact the riverbed and surrounding ecosystems.From an engineering perspective, recognizing the conditions that lead to a partially drowned weir is essential for designing effective water management systems. Engineers must consider factors such as the weir's height, the expected range of water levels, and the potential for sediment accumulation. By incorporating these elements into the design process, they can create weirs that better withstand fluctuations in water levels and minimize negative impacts on the environment.Moreover, monitoring the performance of weirs is vital in understanding their behavior under various conditions. Regular assessments can help identify when a weir becomes partially drowned and allow for timely interventions. For example, if a weir is found to be frequently submerged, it may be necessary to raise its height or modify its structure to improve its functionality. Such proactive measures can prevent long-term ecological damage and ensure that water resources are managed sustainably.The concept of a partially drowned weir also highlights the interconnectedness of human activities and natural systems. As urbanization continues to expand, the alteration of waterways through construction and land development can exacerbate the effects of a partially drowned weir. Increased runoff from impervious surfaces can lead to higher peak flows, which may overwhelm existing weirs and result in more frequent instances of partial drowning. Therefore, it is imperative for urban planners and policymakers to collaborate with engineers and environmental scientists to develop strategies that mitigate these impacts.In conclusion, the term partially drowned weir encapsulates a critical aspect of water management that requires careful consideration. By understanding the factors that contribute to this phenomenon, we can better protect our waterways and the ecosystems that depend on them. It is a reminder that while engineering solutions are essential, they must be integrated with ecological principles to achieve sustainable outcomes. As we face the challenges posed by climate change and urban development, the knowledge of how to manage partially drowned weirs will be increasingly important in our efforts to safeguard both human and environmental health.

在土木工程和水文学领域，各种结构被设计用来管理水流并维持生态平衡。其中一种结构是堰，它本质上是在河流或溪流中建造的障碍物，用于调节水位。然而，由于水位变化或环境条件，堰在某些情况下可能无法按预期功能运行。这就引出了部分淹没堰的概念，指的是堰在一定程度上被淹没，但仍然允许水流过其顶端。理解这一现象对工程师和环保主义者来说至关重要，因为它对水管理和生态系统健康具有重要影响。部分淹没堰可能发生在暴雨或洪水期间，此时上游水位显著上升。在这种情况下，堰控制水流的能力减弱，导致潜在的溢出和下游侵蚀。这种情况可能会破坏水生栖息地，因为许多物种依赖特定的水位进行繁殖和觅食。例如，如果由于部分淹没堰造成的水流变化改变了鱼类的产卵场，鱼类种群可能会下降。此外，沉积物运输也可能受到影响，这进一步影响河床和周围生态系统。从工程的角度来看，认识到导致部分淹没堰的条件对于设计有效的水管理系统至关重要。工程师必须考虑堰的高度、预期的水位范围以及沉积物积累的潜在性。通过将这些元素纳入设计过程，他们可以创建更能承受水位波动并最小化对环境负面影响的堰。此外，监测堰的性能对于理解其在各种条件下的行为至关重要。定期评估可以帮助识别何时堰变得部分淹没，并允许及时干预。例如，如果发现堰经常被淹没，可能需要提高其高度或修改其结构以改善其功能。这种主动措施可以防止长期生态损害，并确保水资源的可持续管理。部分淹没堰的概念还突显了人类活动与自然系统之间的相互联系。随着城市化的不断扩展，通过建筑和土地开发对水道的改变可能加剧部分淹没堰的影响。来自不透水表面的增加径流可能导致峰值流量增加，从而可能淹没现有的堰，导致部分淹没的情况更为频繁。因此，城市规划者和政策制定者与工程师和环境科学家合作，制定减轻这些影响的策略是至关重要的。总之，部分淹没堰这一术语概括了水管理的一个关键方面，需要仔细考虑。通过理解促成这一现象的因素，我们可以更好地保护我们的水道及其依赖的生态系统。这提醒我们，尽管工程解决方案至关重要，但必须与生态原则相结合，以实现可持续的结果。随着我们面临气候变化和城市发展带来的挑战，管理部分淹没堰的知识将在保护人类和环境健康的努力中变得越来越重要。