泸定水电站坝基高水头深厚覆盖层帷幕灌浆施工技术研究

泸定水电站库区地基帷幕灌浆在深厚覆盖层内进行，通过采取一系列针对性措施，克服了钻孔涌水、覆盖层成孔工效低及承压条件下灌浆施工等难点，保证了工程的顺利推进，达到了预期的施工效果。该工程特性、难点及处理措施对今后高水头下深厚覆盖层灌浆工程施工具有一定的参考价值和借鉴作用。

Study on construction technology of curtain grouting for deep overburden upon dam foundation under high head for Luding Hydropower Station

As the curtain grouting for the dam foundation within the reservoir area of Luding Hydropower Station is carried out in a deep overburden， a series of pertinent construction measures are adopted to overcome the difficulties such as drill-hole water gushing， lower hole-forming efficiency， grouting under bearing pressure condition， etc.， and then smooth implement of the construction is ensured and the expected construction effect is obtained as well. The characteristics， difficulties and the relevant treatment measures have a certain reference value and effect for the construction of the similar project in the days to come.