硬壳层 meaning in Chinese

duricrust

On using hard surface on flexible layer as natural foundation of industry
软土层上硬壳层作为工业球罐天然地基的利用
( geosynthetics make the shallow soft ground become " relative overlaying crust " , hence geosynthetics improve the stability of the soft ground
(土工合成材料加筋使浅层软土地基成为“相对硬壳层” 。
Variance index of the settlements of soft clay subgrade was inducted to analyze the asymmetry settlement rules under the influence of depth of fill , fill speed , geologic types of soft clay etc
利用这些观测数据，引入路堤断面中点和两侧坡脚地基表面3点沉降的方差这一统计学指标，详细分析了地质结构，填筑速率、填筑高度以及硬壳层等因素对软基不均匀沉降的影响，得到了一些有意义的结论。
Meanwhile , how the soft interlayer of different place or different thickness affects the load transfer laws and the deforming characteristics of composite foundation are studied , to get the academic basis of the opinion that the hard surface layer should be protect to be utilized and the bearing layer should be good soil
同时，分析软弱夹层在不同位置以及不同厚度对复合地基荷载传递规律和变形特性的影响，得出保护硬壳层和桩端选择较好持力层的理论依据。