路基分层填筑压实工艺参数精准控制要点

Key Points for Precise Control of Process Parameters for Layered Filling and Compaction of Roadbed

摘要:

文章以四川盆地东北部丘陵、低山丘陵区的五段隧道路基工程为依托,结合项目实际地质条件与现场施工工况,围绕分层厚度、填料含水率、碾压速度、碾压遍数等关键指标展开系统分析,通过现场试验划定不同作业区段的参数取值范围,明确级配碎石与AB料两类填料在不同作业场景下的参数管控方法,配套建立质量检测与参数动态调整机制。结果显示,该管控方案可有效规避路基压实不均、后期沉降等常见问题,为同区域内同类隧道路基填筑压实施工提供实操参考。

Abstract:

The article is based on the five section tunnel subgrade project in the hilly and low mountain hilly areas of the northeastern Sichuan Basin. Combining with the actual geological conditions and on-site construction conditions of the project, a systematic analysis is carried out around key indicators such as layer thickness, filling moisture content, rolling speed, and rolling times. Through on-site experiments, the parameter value range of different operation sections is determined, and the parameter control methods of graded crushed stone and AB material filling materials in different operation scenarios are clarified. A quality inspection and parameter dynamic adjustment mechanism is also established. The results show that this control plan can effectively avoid common problems such as uneven compaction and later settlement of the roadbed, providing practical reference for the construction of similar tunnel roadbed filling and compaction in the same area.