pre-soil backfill 先行回填土
backfill soil 回填土 ; 回填土壤
backfill soil slope 填土边坡
gravel backfill soil 碎石回填土
liquefiable backfill soil 可液化回填土
backfill soil slope stability 填土边坡稳定性
To walk after fixed tower crane should remain on track, such as fixed position in backfill soil, the foundation for special treatment, must meet the load requirements.
先行走后固定塔吊应立于轨道上，如后固定位置处于回填土上时，其基础作特殊处理，必须满足承载要求。
During the pipeline construction in backfill soil area it is needful to treat backfill soil around pipeline according to property of backfill soil.
在回填土地区进行管道施工，应根据回填土的性质，对管底及管顶的回填土进行处理。
According to the research, the natural graded gravel is the best backfill material of graded crushed stone, grit, lime stabilized soil and rock chips.
研究表明，在连续级配碎石、砂砾、石灰稳定土、石屑几种回填材料中以自然级配砂砾石为最佳台背回填材料。
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