The gravel is one of the most common materials for abutment backfilling.

砂砾是台背回填工程常用的回填材料之一。

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Its capacity of resisting large external load enables it not to rely on lateral support of the soil, therefore its requirements on backfilling soil is lower than on flexible tubes.

由于它本身能抵抗较大的外荷载，使其不须依赖土壤的侧向支撑，因而对回填土要求较柔性管低。

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Foam concrete wall used for light bet backfilling materials can reduce the vertical section load, also reduced the wall lateral load of the other side.

泡沫混凝土在岸墙后用作轻质回填材料可降低垂直截荷，也减少了对岸墙的侧向载荷。

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"There is no strategy that I am in charge of in terms of reform which is predicated upon backfilling, " he said.

BBC: Scotland politics

In the 1970s, a hugely expensive and complicated 15-year programme to reclaim 22 hectares of land by damming and backfilling the sea bed began.

BBC: Stade Louis II

American commanders say the risks they face of backfilling their troops with Iraqi soldiers is manageable.

CNN: Behind the Scenes: Surge helping, but Iraq still on knife's edge