均质土坝土料制备及上游坡面砼护坡施工技术

Preparation of Homogeneous Earth Dam Material and Construction Technology of Upstream Slope Concrete Protection

均质土坝利用当地土料进行筑坝,造价较低,材料单一,工序简单,特别在我国西北黄土地区修筑较多。但西北黄土地区,气候干燥,年降雨量少,土料天然含水率普遍偏低,且土料场多位于黄土梁峁上,地形较为狭窄,土料泡土和开采制备难度较大。同时均质土坝上游坡面砼护坡作为水库水位长期涨落的冲刷面,施工质量要求较高。以延安市甘泉县府村川水库工程为依托,重点阐述延安市甘泉县府村川水库均质土坝土料制备及上游坡面砼护坡施工技术,结果可为西北黄土地区类似工程提供借鉴。

Homogeneous earth dams use local soil materials for dam construction. The construction cost is low, the materials are simple, and the procedures are simple. Especially, they are built more in the loess region of northwest China. However, in the northwest loess region, the climate is dry, the annual rainfall is small, the natural moisture content of the soil material is generally low, and the soil material field is mostly located on the loess beam, the terrain is relatively narrow, and the soil material is difficult to prepare and extract. At the same time, the upstream slope of the homogeneous earth dam is used as the scouring surface for the long-term fluctuation of the reservoir water level, which requires high construction quality. Relying on the Fucunchuan Reservoir Project in Ganquan County, Yan’an City, this paper focuses on the preparation of homogeneous earth dam materials and the construction of upstream slope protection in Fucunchuan Reservoir, Ganquan County, Yan’an City. The results can provide reference for similar projects in the Northwest Loess Region.