小浪底高土石坝心墙土料应用探讨

Probe into application of earth material in core wall of the Xiaolangdi earth rockfill dam

小浪底大坝防渗土料填筑规模巨大。工程所用土料有轻粉质壤土、中粉质壤土、重粉质壤土和粉质粘土 4类。施工过程中 ,有关单位曾对土料的应用产生过争议 ,监理单位结合工程施工的具体情况 ,遵循当地材料坝应充分利用当地材料 ,尽量少弃料和因地制宜 ,因材设计的原则 ,通过技术分析和采用合理的施工措施 ,取得了成功 ,使上坝土料的压实实际干密度平均大于 1.7t/m3。对于小浪底高土石坝心墙土料的应用进行进一步的分析和探讨之后 ,就土料的试验、选择应用。

The Xiaolangdi dam has a large quantity of impervious earth filling.The earth material used for the project consists of light silty loam,moderate silty loam,heavy silty loam and silty clay.During construction,disputes occurred on application of earth material.In connection with the specific conditions of project construction and following the principle of making full use of local materials,redusing disposal materials as much as possible and designing in accordance with the materials,the construction supervisor made technical analysis,adopted reasonable construction measures and successfully brought the actual compacted earth dry density in dam averagely higher than 1.7t/m 3.After further analysis and probe into application of earth material in core wall of the high earth rockfill dam,constructive suggestion are put forward in respect to earth test,earth selection and application,earth compaction standard and proper earth exploitation