崆峒水库枢纽大坝坝基渗漏处理设计

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崆峒水库枢纽工程建成运行已近四十年,现状大坝主要存在坝肩绕坝渗漏及坝基接触渗漏等主要问题。为消除坝基渗透安全隐患目的.通过对渗漏成因的分析,设计采取大坝坝体、坝基岩体及砂砾石层内通过约70.0m深孔固结灌浆形成连续帷幕防渗墙,封闭心墙底部与坝基岩体之间的渗漏通道,延长渗径,降低接触渗透比降的技术方案进行处理。经灌浆效果的综合全面分析评价,灌浆效果显著,取得良好效果。坝基接触渗漏深孔固结灌浆处理设计与施工实践,为解决类似大坝坝基接触渗漏提供了有益经验,可对类似大坝除险加固提高良好参考借鉴。
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