The Initial Design for Roller Compacted Concrete (RCC) Gravity Dam of a Water-control Project in Cold Area
The some key water-control project in Xinjiang is made up of main dam (RCC gravity dam), auxiliary dam (1＃ and 2＃ clay core dam), water release structure (crest outlet, middle and bottom outlet), water intake structures for power generation (water-intake type ground plant in the right bank, water inlet tower, one high-pressure pipeline, bifurcated pipe) and power plant. The main features and technical difficulties are as follows: (1) Adverse weather condition in dam site area. Hot in summer, cold in winter, the annual temperature difference (average temperature difference between the highest and the lowest is 67. 5℃, extremely 89. 9℃) and daily temperature difference (average 12. 8 - 16. 2℃) are very large. The evaporatation is strong, normal evaporation is as much as 10 times of the average precipitation. The average wind speed is 1. 8m/s, with the maximum wind speed being 25m/s. The project is located in dry and cold region, cold, hot, wind, dry weather is very extrusive, so the problem of concrete temperature control is extremely prominent; (2) the groundwater is erosive. From No. 35 to No. 39 dam section, pyrite distribution on cracks surface is relatively concentrated. Particularly in No. 37 dam section, pyrite oxidation belt depth is larger; (3) The concrete aggregate is Gneiss granite artificial aggregate mixed with natural sand, this kind of concrete aggregate mixture scheme has no engineering example.
roller compacted concrete (RCC) gravity dam dry and cold region naturally adverse climate concrete temperature control.
Luo Weibang Liu Tao
Xinjiang Survey and Design Institute of Water Resources And Hydropower, Heilongjiang Road 19. Urujmchi 830000 China
国际会议
第五届碾压混凝土坝国际研讨会(The Fifth International Symposium on Roller Compacted Concrete(RCC))
贵阳
英文
291-297
2007-11-02（万方平台首次上网日期，不代表论文的发表时间）