grain size curve

简明释义

粒度曲线

英英释义

例句

1.The geologist analyzed the grain size curve to determine the sediment transport history of the river.

地质学家分析了粒度曲线以确定河流的沉积物运输历史。

2.To improve construction material quality, engineers often refer to the grain size curve of aggregates.

为了提高建筑材料的质量，工程师经常参考骨料的粒度曲线。

3.A well-defined grain size curve can indicate the sorting of sedimentary particles in a sample.

清晰的粒度曲线可以指示样品中沉积颗粒的分选情况。

4.In soil mechanics, the grain size curve is crucial for understanding the behavior of different soil types.

在土壤力学中，粒度曲线对于理解不同土壤类型的行为至关重要。

5.The grain size curve demonstrated a bimodal distribution, suggesting two distinct sources of sediment.

这条粒度曲线显示出双峰分布，暗示有两个不同的沉积源。

作文

The study of sedimentology often involves analyzing various characteristics of sediments, one of which is the distribution of particle sizes. This distribution is commonly represented by a graphical tool known as the grain size curve. The grain size curve is a vital component in understanding sedimentary processes and the transport mechanisms of materials within different environments.A grain size curve is essentially a plot that shows the proportion of sediment particles of different sizes. On the x-axis, we typically have the grain size, which can range from very fine silt to coarse gravel, while the y-axis represents the cumulative percentage of the total sample. This curve allows geologists and sedimentologists to visualize how the sediment is distributed across various sizes, providing insights into the depositional history of the material.Understanding the grain size curve is crucial for several reasons. Firstly, it helps in identifying the energy conditions under which the sediment was deposited. For example, well-sorted sediments with a narrow grain size curve suggest a high-energy environment, such as a river or beach, where similar-sized particles are transported together. In contrast, a poorly sorted sediment with a broad grain size curve indicates a low-energy environment, where particles of various sizes settle out of suspension at different rates.Moreover, the shape of the grain size curve can reveal information about the source of the sediment. For instance, sediments that have a smooth, bell-shaped curve often originate from a single source, whereas a more irregular curve may indicate a mixture of materials from different sources. This differentiation is essential for reconstructing past environmental conditions and understanding geological history.In practical applications, the grain size curve is also significant in engineering and construction projects. For example, when designing foundations or assessing soil stability, engineers must consider the grain size distribution of the soil. A well-defined grain size curve allows them to predict how the soil will behave under load and what types of materials are suitable for construction.In conclusion, the grain size curve is an indispensable tool in both geology and engineering. It provides a clear visual representation of particle size distribution, which aids in interpreting sedimentary environments and informs practical applications in construction. By mastering the concept of the grain size curve, students and professionals alike can enhance their understanding of sediment dynamics and make informed decisions based on sediment characteristics.

沉积学的研究通常涉及分析沉积物的各种特征，其中之一就是颗粒大小的分布。这种分布通常通过一种称为粒度曲线的图形工具来表示。粒度曲线是理解沉积过程和不同环境中材料运输机制的重要组成部分。粒度曲线本质上是一个图，显示了不同大小沉积颗粒的比例。在x轴上，我们通常有颗粒大小，其范围可以从非常细的粉砂到粗砾石，而y轴则代表样本的累积百分比。这条曲线使地质学家和沉积学家能够可视化沉积物在各种尺寸上的分布，从而提供关于材料沉积历史的见解。理解粒度曲线至关重要，原因有几个。首先，它有助于识别沉积物沉积时的能量条件。例如，具有狭窄粒度曲线的良好分类沉积物表明高能环境，如河流或海滩，在那里相似大小的颗粒一起被运输。相反，具有宽泛粒度曲线的分类不良沉积物则表明低能环境，在这种环境中，粒子以不同速率从悬浮状态沉降。此外，粒度曲线的形状可以揭示沉积物来源的信息。例如，具有光滑钟形曲线的沉积物通常来自单一来源，而更不规则的曲线可能表明来自不同来源的材料混合。这种区分对于重建过去的环境条件和理解地质历史至关重要。在实际应用中，粒度曲线在工程和建筑项目中也具有重要意义。例如，在设计基础或评估土壤稳定性时，工程师必须考虑土壤的粒度分布。清晰定义的粒度曲线使他们能够预测土壤在负载下的表现以及哪些材料适合用于建筑。总之，粒度曲线是地质学和工程学中不可或缺的工具。它提供了颗粒大小分布的清晰视觉表示，有助于解释沉积环境，并为建筑中的实际应用提供信息。通过掌握粒度曲线的概念，学生和专业人员都可以增强对沉积动力学的理解，并根据沉积物特征做出明智的决策。