Red sand is the commonly used backfill material for building construction in the Kingdom of Saudi Arabia, and its backfill technique is relatively mature. Red sand backfill has easy construction, high efficiency and low cost. Through the construction of red sand backfill in the main building foundation of Block 103 of Saudi Arabia Phase 5 Camp Project, this paper summarizes the construction techniques and experience, which provides reference and guidance for the application and promotion of red sand backfill technology.%红砂是沙特阿拉伯王国建筑施工常用的回填材料，回填技术较成熟。红砂回填施工简单易操作、效率快并且成本低廉，本文通过沙特第5期军营工程103地块主楼基础回填红砂的施工，总结施工技术和经验，为红砂回填技术的应用和推广提供了借鉴和指导。
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