Speedy construction of the highest RCC gravity dam in Lao PDR

摘要

The outstanding production rate of RCC placement achieved during the construction of the main dam at the Nam Ngiep 1 hydro project ranks this RCC dam as one of the fastest to be constructed in the world to date, but also ranked it as one of the most efficiently constructed dams in terms of batching plant rated capacity and actual quantities of RCC produced and placed. This paper discusses the construction techniques and solutions adopted during construction to achieve high productivity and efficiency while retaining the required high quality. @@1. Forbes, B., "Innovation of significance and their development on some recent RCC dams", 6th international Symposium on Roller Compacted Concrete (RCC) dams, Zaragoza, Spain; 2012. @@2. Dunstan, M.R.H., "The first 30 years of RCC dams: Technical progress on substantial hydropower development and Roller Compacted Concrete dams", CHINCOLD Publication, 2015. @@3. Dunstan, M.R.H., "How fast should an RCC be constructed? Technical progress on substantial hydropower development and Roller Compacted Concrete dams", CHINCOLD Publication; 2015. @@4. Aosaka, Y., Seoaka, T., Forbes, B., Cockcroft, JJE.M., Murakami, Y., and Asakawa, M., "Trial mix and full-scale trial embankment for RCC dam at Nam Ngiep 1 Hydropower Project", Proceedings, 85th Annual Meeting of ICOLD, Prague, Czech Republic; 2017. @@5. Matsumoto, Y., Munnavongchanh, K., Kosaka, K., and Cockcroft, J.EM., "An Overview of the Nam Ngiep 1 Hydropower Project including Design and Construction of the Highest Dam in Lao PDR", Proceedings, Sixth International Conference on Water Resources and Hydropower Development in Asia, Vientiane, Lao PDR, 2016.