填筑工程是高速公路路基工程的主体 ,特别是压实度93% ,95%区对路面结构层起到路床支承、稳定作用 ,路基填筑质量非常重要。本文通过我们对砂砾石的研究 ,合理开发 ,充分利用作为路基压实度为93%、95%区填料 ,确保了路基工程质量 ,加快了工程进度 ,降低了工程造价。为今后修建高速公路提供了参考依据 Filling project is the main part of expressway subgrade project, especially the compaction degree of 93%, 95% of the pavement structure layer plays a roadbed support and stability, the quality of subgrade filling is very important. In this paper, through our research on gravel, rational development and full use as a subgrade fill degree of 93%, 95% area packing, to ensure the quality of subgrade construction, speed up the progress of the project and reduce the project cost. For the future construction of the highway provided a reference