fill roadbed的用法和样例：
例句
- The results show that the post-subsidence of the roadbed can not meet the requirement of design and need to be changed, while the embankment is stable.
计算结果表明，软土路基工后沉降不能满足设计要求，必须对其进行处理，而填土路堤稳定性分析结果说明该段路堤是稳定的。 - Based on the original data of geotechnical investigation, the authors conducted research on the roadbed, which consists of deep soft soil.
本文对池州至安庆高速公路大渡口段软土路基的沉降和路堤稳定性进行了计算和工程地质评价。
