湿陷性黄土沟壑区场地建设中存在挖填方设计、边坡稳定性及黄土水敏性处理等关键课题。依托某湿陷黄土场地项目并根据已有工程经验和文献，总结了黄土沟壑区平山造地中的六个要素，结合黄土水敏特性，为地基处理、边坡设计、排水设计确定处理目的与处理思路，将繁杂工程问题归类整理，并进行技术方案设计。同时针对几种湿陷性挖填方场地的处理方法：换土垫层法、夯实法、挤密法、预浸水法与桩基法等，进行施工流程、造价、耗时及处理效果的对比；并整理本工程坡形设计方案，包括合理设置坡率和放坡平台，以及三维立体排水的工程经验，为后续同类工程提供借鉴。
Key issues such as excavation and filling design, slope stability, and water sensitivity of loess exist in the construction of the collapsible loess gully area. Relying on a collapsible loess site project and the existing engineering experience and literature, the six elements in the land reclamation in the loess gully area were summarized, combined with the water sensitivity of the loess, to determine the treatment objectives and process for foundation treatment, slope design, and drainage design. According to this model, we classified and sorted out complicated engineering problems, and designed technical solutions. Simultaneously, for several collapsible excavation and filling site treatment methods: soil replacement cushion method, punning method, compaction method, pre-soak method, and pile foundation method, etc., the construction process, cost, time-consuming and treatment effect are compared; and this paper summarizes the slope design scheme of our project, including the reasonable setting of slope rate and grading platform, as well as the engineering experience of three-dimensional drainage, to provide a reference for subsequent similar projects.
