Dongqing CFRD dam,with the height of 150 m,the two-thirds of whose dam filling material is hard and soft rock mixture from the spillway excavation material,was completed in 2009 and has been running for more than 5 years to date.The monitoring data analysis of dam deformation,seepage,panel joints and deflection deformation during operating period indicates that the operation condition of the dam is stable and normal,revealing the dam deformation performance and safety operation condition of the dam filed with soft rock.Practice has proved that Dongqing CFRD gives full play to the advantages of the rockfill dam using local materials.High CFRD dam filled with soft rock is safe and feasible after taking appropriate deformation control measures according to the characteristics of dam filling materials,which is available for references to similar projects.%董箐面板堆石坝坝高150m,坝体2/3的填筑料采用的是溢洪道开挖的砂泥岩混合的软硬岩料,大坝于2009年完工,迄今己运行了5年多的时间.通过运行期大坝变形、大坝渗流渗压、面板接缝及挠度变形等监测数据分析表明,大坝的运行状态稳定、正常,揭示了软岩填筑的大坝变形性状及安全运行状况.实践证明,董箐面板堆石坝充分发挥了堆石坝就地取材的优势,根据坝体填筑材料的特性采取恰当的变形控制措施后,软岩用于高面板堆石坝坝体填筑是安全可行的,可供同类工程借鉴与参考.
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