深水灌浆技术在西北口水库除险加固工程中的应用

Application of Deep Water Grouting Technology in Danger Removal and Reinforcement Project of Xibeikou Reservoir

面板堆石坝因其取材方便、造价低廉,在二十世纪我国中西部水库兴建时,大都采用其作为水库的挡水建筑物,但随其使用年限的加长,或多或少都存在坝基渗漏问题,进而对大坝的安全运行产生很大影响,同时部分大中型水库在除险加固施工过程中,无法腾空库容,在此限制条件下,文章从工程实例着手,对“大水深、高水头”条件下的大坝坝基防渗堵漏施工关键技术进行了总结分析,以期为类似工程提供借鉴。

Due to the convenient materials and low cost, face rockfill dam was used as water retaining structure when the reservoir was built in central and west China in last century. However, with the extension of its service life, there is more or less leakage problem of the dam foundation, which has a great impact on the safe operation of the dam. At the same time, some large and medium-sized reservoirs cannot be emptied in the process of danger removal and reinforcement construction. Under this limited condition, this paper starts from the project example, summarizes and analyzes the key technologies of dam foundation seepage control and plugging under the condition of “large water depth and high water head”, hoping to provide reference for similar projects.