坝蓄水期变形监测分析

Hydro Science and Cold Zone Engineering(2023)

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Abstract
根据新疆奴尔水库蓄水期大坝变形监测资料,对大坝坝体、心墙与岸坡变形状态进行了分析.结果表明:大坝单点最大沉降发生在坝体(含坝基覆盖层厚度)的1/3~2/3处;蓄水后 0+290 m、0+540m断面坝轴线附近累积沉降量分别为 327 mm、309 mm,沉降变形趋缓,大坝沉降量小于坝高的 1%,大坝碾压质量较好;沥青混凝土心墙各高程偏移变形均与荷载(填土厚度)相关,最大坝高段偏移变形量最大达 6.2 mm.从大坝填筑至水库蓄水,心墙各部位偏移变化量较小,测值均<0.8 mm,心墙变形趋于平稳.
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