The paper studies the roller compaction character of desert sand used for embankment material.

本文对沙漠砂作为填我土料所具有的碾压特性进行了研究。

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In case of foundation and road embankment material parameter, valid reinforce range results is 1.5-2.5 of hammer's diameter.

在常用的地基或填方参数情况下，有效加固范围是夯锤直径的1.5 ~ 2.5倍。

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Then the compactness postulate and roller parameter of embankment material are researched by blasting test and roller test on site.

通过现场爆破试验和碾压试验，研究坝体填筑材料的密实度要求和碾压参数；

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Work to repair the embankment will involve digging out a substantial part of the failed earthworks and rebuilding with new material.

BBC: GWR heritage railway embankment repairs begin