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。
The paper introduces the property of essentials for construction of expansive soil subgrade, choice of schemes for finely paving coverage of road bed and construction procedure.
介绍了膨胀土的特性、膨胀土路基施工要点、路床精铺层方案的选择及施工程序。
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