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糯扎渡大坝是国内已建和在建最高的砾石土心墙堆石坝,最大坝高261.5m,砾石土料由土料场开采的天然混合土料与加工系统生产的砾石料掺合而成。如何确保砾石土料上坝前的质量,即级配均匀,满足设计要求,掺合场的备仓和掺合是关键。本文介绍掺砾土料的备仓和掺合的施工工艺及方法,为今后类似工程提供借鉴依据。
Nuozhadu Dam is the highest built gravel earth core wall rockfill dam in China with the maximum dam height of 261.5m. The natural mixed earth material extracted from gravel soil by the soil material field is mixed with the gravel material produced by the processing system And into. How to ensure the quality of the gravel soil before the dam, that is, with uniform grading, to meet the design requirements, blending field preparation and blending is the key. This article introduces the preparation process and method of preparation and blending of gravelly soil, and provides reference for similar projects in the future.