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土坝坝基进行帷幕灌浆时,由于坝基无混凝土盖板,不能进行裂隙冲洗,灌浆压力受到限制,因而灌浆效果有限。采用高压旋喷在坝基建造灌浆盖板,改善了灌浆条件,取得了良好的灌浆效果,并且有效地截断坝基表层的渗漏,减少了坝基的接触冲刷破坏。温峡口水库大坝灌浆试验的成功为坝基无混凝土盖板条件下灌浆和坝基防渗加固处理探索了一条新路子。
When dam foundation embankment curtain grouting, because the dam foundation without concrete cover, can not fissure flushing, grouting pressure is limited, so the grouting effect is limited. High-pressure rotary jet grouting in the dam foundation to improve the grouting conditions, and achieved good grouting effect, and effectively cut off the surface of the dam foundation leakage and reduce contact erosion erosion dam foundation. The success of the dam grouting test in Wenxiakou Reservoir has explored a new approach for grouting under dam foundation without concrete cover and seepage prevention and reinforcement of dam foundation.