Suitability Study Hard And Soft White Layered Rock Mass Construction Of High Concrete Gravity Dam

Along with the society to the energy demand quantity unceasing increase, As a kind of clean and effective energy, obtained the very big development, the hydraulic electrogenerating has carried on the overall stave plan development in each basin. Middle the former hydroelectric station construction, the gravity dam mostly chooses on new and the complete rock mass, the rock mass quality is high. Because the massive fine dams base has been chosen, also basins have different geology condition, thus some hydroelectric station dam base have to use relative worse rock.Guanyinyan hydroelectric station as a main point which links up as the Yangtze River middle reaches and the downstream water, will construct on the bedded rocks body which soft and hard rock alternate with, also the layers are multitudinous, gage distortion,has not constructed the high concrete dam in the domestic and foreign hydroelectric station construction on this kind of dam base before. This article embarks from the dam foundation rock project characteristic, constructed the high concrete dam to the Guanyinyanyan foundation rock to be suitable the nature to conduct the research.This article in the base of understanding research area geology situation, has conducted the detailed investigation and study to the dam site area rock characteristic, according to the rock type and strength the dam site area rock divise to three kinds, obtains the rock accurate distributed characteristic through the massive field survey, and has delimited the soft and hard rock boundary according to the rock project type.In the rock mass project characteristic research, first defers to the lamellated structure type to carry on the division to the rock mass structure, and has conducted the research to each layers textural classification and the combination characteristic; In the rock mass quality research, has selected many kinds of rock physique quantity graduation target, assigns the Guanyinyanyanyan foundation rock physique quantity graduation plan, and according to the target correspondence research to carry on the graduation to the dam foundation rock quality; In foundation rock choicing research, use the field survey and the drill hole data to analysis the deep foundation rock,...