合理的确定水下隧道覆盖层厚度是建设水下隧道关键技术之一。
In underwater tunnel construction, to confirm the reasonable cover thickness is the key in the technology.
因此，对水下隧道的最小覆盖层厚度进行研究具有较大的工程意义。
Therefore, to investigate the minimal thickness of covering layer of underwater tunnel is greatly engineeringly significant.
回填体不仅提高了边坡的稳定性，还为转入地下开采提供了所需的安全覆盖层厚度。
The back filling at the slope bottom not only enhances slope stability, but also provides the safe overlay which is needed in underground mining.
因此本品用量过头既不影响产品质量，也不造成浪费，仅仅出现泡沫覆盖层厚度增加。
So the overdosage of it will not affect the quality and not cause the waste. And only some raise of the foam will occur.
因而雪花覆盖层和冰粒层层堆积起来直到如此之大的厚度以致较上层的重量压缩较下层。
So blankets of snow and ice grains mounted layer upon layer and were of such great thickness that the weight of the upper layers compressed the lower ones.
该方法可利用覆盖层与下部基岩存在的电性差异来测定覆盖层的厚度。
We could determine the overburden thickness by contrast the electric property difference of the underlying original rock and the overburden.
深厚覆盖层可按其成因、物质组成、结构特征及厚度变化等作为岩组划分的依据。
The classification of rock group for the deep and thick overlying layer could be based on their formation, matter composition, structure features and the thickness changes.
深厚覆盖层可按其成因、物质组成、结构特征及厚度变化等作为岩组划分的依据。
The classification of rock group for the deep and thick overlying layer could be based on their formation, matter composition, structure features and the thickness changes.
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