loose backfilled soil 松散回填土
dry density of backfilled soil 回填土干密度
How to make the backfilled soil of pipeline trench stabilized in an effective manner is a major concern for the normal operation of pipeline.
如何采取有效的手段保持管沟回填土，是涉及管道正常运营的大问题。
Stiffness variation of backfilled soil played a small role on superstructure response when the substratum was relative stiff and the box foundation embedment was shallow.
箱基埋置深度浅、下卧土层刚度较大时，箱基周围回填土属性对结构反应影响不大；
Due to the stress of backfilled soil, the asphalt coating at 3:00-9:00 (clock position) is easily disbonding and the CP is shielded, which results in the pipe body corrosion.
在回填土壤的应力作用下，管道在3∶00 ~ 9∶00时钟位置的石油沥青防腐层容易出现剥离并屏蔽阴极保护，导致管体腐蚀。
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