gravity dam

简明释义

重力坝

英英释义

例句

1.In many mountainous regions, engineers prefer a gravity dam 重力坝 due to the availability of solid rock foundations.

在许多山区，工程师更喜欢使用重力坝 gravity dam，因为那里有坚固的岩石基础。

2.The gravity dam 重力坝 at the river's bend was built to prevent flooding in the valley below.

位于河流弯道的重力坝 gravity dam是为了防止下游山谷的洪水而建造的。

3.The construction of a gravity dam 重力坝 requires careful geological surveys to ensure stability.

建造重力坝 gravity dam需要仔细的地质勘查以确保稳定性。

4.A well-designed gravity dam 重力坝 can last for decades with minimal maintenance.

一个设计良好的重力坝 gravity dam可以在最小维护下持续数十年。

5.The design of the gravity dam 重力坝 allows it to rely on its own weight to resist the forces of water.

这种重力坝 gravity dam的设计使其能够依靠自身的重量抵抗水的力量。

作文

The construction of dams has played a crucial role in managing water resources, generating hydroelectric power, and controlling floods. Among the various types of dams, the gravity dam stands out due to its unique design and functionality. A gravity dam is a type of dam that relies on its own weight to resist the horizontal forces exerted by the water behind it. This engineering marvel is typically made from concrete or masonry, which provides the necessary mass to withstand the pressure of the water without the need for additional support structures.One of the primary advantages of a gravity dam is its simplicity in design. Unlike arch dams, which rely on the arch shape to transfer water pressure to the valley walls, a gravity dam can be built in a straight line across a river. This makes it easier to construct, especially in locations where the geological conditions are not ideal for more complex designs. Additionally, the materials used in a gravity dam are often readily available, which can reduce overall construction costs.The effectiveness of a gravity dam is largely determined by its height and thickness. The taller and thicker the dam, the more water it can hold back. However, this also means that careful calculations must be made to ensure that the dam can support its own weight and the weight of the water it contains. Engineers must consider factors such as the type of soil at the foundation, the potential for seismic activity, and the expected maximum water levels when designing a gravity dam.Moreover, gravity dams are known for their durability and longevity. Many of the world’s oldest dams are gravity dams, and they have withstood the test of time, providing essential services to communities for decades. For instance, the Hoover Dam in the United States, completed in 1936, is a prime example of a gravity dam that has successfully generated electricity and controlled flooding for many years.However, despite their numerous benefits, gravity dams also come with challenges. One significant concern is the environmental impact of damming rivers. The creation of a reservoir behind a gravity dam can lead to the displacement of local wildlife and changes in the ecosystem. It can also affect the flow of sediment downstream, which is vital for maintaining river health. As a result, modern engineers and environmentalists are increasingly focused on finding a balance between the benefits of gravity dams and their ecological consequences.In conclusion, the gravity dam is an essential structure in the field of civil engineering that offers numerous advantages in water management and energy generation. Its ability to harness the power of water while relying on its own weight makes it a practical choice for many locations. However, as we continue to develop our infrastructure, it is crucial to consider the environmental implications of such constructions. By doing so, we can ensure that the benefits of gravity dams are realized without compromising the health of our ecosystems.

大坝的建设在管理水资源、发电和控制洪水方面发挥了至关重要的作用。在各种类型的大坝中，重力坝因其独特的设计和功能而脱颖而出。重力坝是一种依靠自身重量来抵抗水后面施加的水平力的大坝。这种工程奇迹通常由混凝土或砌体构成，提供了必要的质量，以承受水的压力，而不需要额外的支撑结构。重力坝的主要优点之一是其设计的简单性。与依靠拱形结构将水压力转移到山谷墙上的拱坝不同，重力坝可以在河流上直线建造。这使得它在地质条件不理想的地点更容易建造。此外，重力坝所使用的材料通常是现成可得的，这可以降低整体建设成本。重力坝的有效性主要取决于其高度和厚度。大坝越高、越厚，能够蓄积的水就越多。然而，这也意味着必须进行仔细的计算，以确保大坝能够支撑自身的重量和所含水的重量。工程师在设计重力坝时，必须考虑基础土壤的类型、潜在的地震活动以及预期的最大水位等因素。此外，重力坝以其耐用性和长寿命而闻名。世界上许多最古老的大坝都是重力坝，它们经受住了时间的考验，为社区提供了数十年的基本服务。例如，美国的胡佛大坝，建于1936年，是一个成功发电和控制洪水的重力坝的典范。然而，尽管有众多优点，重力坝也面临挑战。一项重大问题是筑坝对环境的影响。在重力坝后面形成的水库可能导致当地野生动物的迁移和生态系统的变化。它还可能影响下游沉积物的流动，而沉积物对于维持河流健康至关重要。因此，现代工程师和环境保护者越来越关注在重力坝的好处和生态后果之间寻找平衡。总之，重力坝是土木工程领域的一种重要结构，在水管理和能源生成方面提供了众多优势。它利用水的力量，同时依靠自身的重量，使其成为许多地点的实用选择。然而，随着我们继续发展基础设施，考虑这些建设的环境影响至关重要。通过这样做，我们可以确保实现重力坝的好处，而不损害生态系统的健康。