detention dam

简明释义

蓄洪坝

英英释义

例句

1.After heavy rains, the detention dam helped prevent flooding in the nearby town.

在大雨后，滞留坝帮助防止了附近城镇的洪水。

2.Local authorities installed a detention dam to improve water quality in the river.

当地政府安装了一个滞留坝以改善河流的水质。

3.During the environmental assessment, the impact of the detention dam on wildlife was considered.

在环境评估过程中，考虑了滞留坝对野生动物的影响。

4.The construction of the detention dam was completed ahead of schedule.

该滞留坝的建设提前完成。

5.The engineers designed a new detention dam to manage stormwater runoff effectively.

工程师们设计了一个新的滞留坝来有效管理雨水径流。

作文

In the realm of civil engineering and environmental management, the term detention dam refers to a structure designed to temporarily hold back water during periods of heavy rainfall or snowmelt. The primary purpose of a detention dam (滞留坝) is to manage stormwater runoff, reduce flooding risks, and improve water quality by allowing sediments and pollutants to settle before the water is released downstream. These dams play a critical role in flood control systems, especially in urban areas where impervious surfaces like roads and buildings increase the speed and volume of runoff. The design of a detention dam typically includes a large basin that can capture excess water. During normal weather conditions, this basin remains dry, but when heavy rains occur, the dam fills up, storing water until it can be gradually released. This controlled release helps to prevent sudden surges of water that could overwhelm local waterways and cause flooding. Additionally, by holding water for a period of time, detention dams allow for natural processes to take place, such as sedimentation, which can improve the overall health of the aquatic ecosystem downstream.One of the significant advantages of using detention dams is their ability to mitigate the impacts of urbanization on local hydrology. In cities, where natural landscapes have been replaced with concrete and asphalt, rainwater cannot infiltrate into the ground. Instead, it runs off quickly, leading to increased flood risks and erosion. By integrating detention dams into urban planning, engineers can create more resilient communities that are better equipped to handle extreme weather events.Moreover, detention dams can also provide recreational opportunities and enhance local aesthetics. Many modern designs incorporate parks, walking trails, and wildlife habitats around the detention basins. This dual functionality not only improves the quality of life for residents but also fosters a greater appreciation for natural water management solutions. However, while detention dams offer numerous benefits, they are not without challenges. Proper maintenance is crucial to ensure that these structures operate effectively. Sediment buildup can reduce their capacity over time, necessitating regular dredging and upkeep. Additionally, there can be ecological concerns related to the alteration of natural water flow patterns, which may impact local flora and fauna. Therefore, careful planning and community engagement are essential in the design and implementation of detention dams.In conclusion, detention dams (滞留坝) serve as vital components in contemporary water management strategies. They help to control flooding, improve water quality, and support urban resilience in the face of climate change. As cities continue to grow and face increasingly severe weather events, the importance of such structures will only continue to rise. By understanding the multifaceted roles of detention dams, we can better appreciate their value in creating sustainable and livable environments for future generations.