小粒径石料填筑面板堆石坝的应用研究

Application of Small Particle Size Rock Material in the Filling of Concrete Face Rockfill Dam

针对马岩水库工程,通过室内、现场碾压试验获得了小粒径堆石料筑坝的试验参数。试验结果表明,马岩水库小粒径石料除级配不满足堆石坝传统经验要求外,其余参数均满足规范要求,进而提出了适用于本工程的配套施工技术,拓宽了面板堆石坝堆石料的应用范围。通过坝体渗流、坝坡稳定计算分析进一步论证了小粒径石料筑坝的可行性,监测结果也表明了坝体的可靠性。

The test parameters of small particle size rockfill material for the dam filling of Mayan Reservoir are obtained through indoor and field rolling tests. The test results show that,in addition to the gradation of small particle size rock material,which does not meet the traditional experience requirement of rockfill dams,the remaining parameters all meet the requirements of standard. Therefore,the matching construction technologies suitable for this project are put forward,that widens the application scope of rockfill material for face rockfill dam. The application feasibility of small particle size rock material in rockfill dam construction is further demonstrated through dam seepage and dam slope stability calculations and analyses,and the reliability of dam body is also verified by monitoring results.