江垭大坝坝基防渗帷幕缺陷及其处理

EXPRESS WATER RESOURCES & HYDROPOWER INFORMATION(2002)

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Abstract
江垭大坝7、8号坝段坝基地质条件复杂,经过三排高压水泥灌浆和一排超细水泥补强灌浆后,基岩中仍然存在透水率大于1Lu的区域,最大值达3.7Lu,且存在涌水和涌水压力现象.为根治帷幕缺陷,针对高水头、动水条件的特点,决定采取改性水泥与CW新型化学材料复合灌浆方法处理.灌后检查结果表明效果良好.
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