高压喷射灌浆技术在云南病险水库加固工程中的应用

Application of high-pressure sprinkling grouting technology to reinforcement of ill-conditioned reservoirs in Yunnan Province

云南病险水库普遍存在坝体和坝基渗漏严重的问题,以白鹤水库除险加固工程为例,探讨了高压喷射灌浆技术在大坝防渗加固中的应用及效果。水库防渗处理后坝体浸润线降低,下游坝坡原渗水潮湿现象消失,高水位时下游坝脚的渗水量也大幅减小,坝体和坝基的防渗性能明显改善。高压喷射灌浆技术适用范围广,施工简便灵活,质量检测方便,对其他病险水库的加固处理具有借鉴作用。

The ill-conditioned reservoirs in Yunnan Province commonly have severe seepage problems in the dam body and foundation.By taking the reinforcement of Baihe Reservoir as an example,the application and effectiveness of high-pressure sprinkling grouting technology in anti-seepage and reinforcement of dams in Yunnan Province are investigated.The results show that the phreatic line of the dam body decreases after anti-seepage treatment of Beihe Reservoir.The phenomenon of leakage on the downstream dam slope disappears.The leakage quantity at the downstream dam toe greatly decreases at high water level.The anti-seepage properties of the dam body and foundation are obviously improved.The high-pressure sprinkling grouting technology has wide range of applicability,its construction is simple,and its quality inspection is convenient.It is helpful to the reinforcement of other ill-conditioned reservoirs.