Study On The Engineering Geological Property Of The Rock-mass And Soil-body In The Dam Site Of Nazi Gorge Hydropower Station

Study on the engineering geology property of the rock-mass and soil-body is always the keystone in the water and electricity field. The properties of the rock-mass and soil-body in the dam area decide the price and cost of the project and have got the important influence to the safe construction of the hydraulic structures. Research that aim at the engineering area rock-mass and soil-body not only enrich and develop the speculative knowledge ,but also have the important meaning in resolving concretely engineering problems. With the support of the Nazi Gorge water power station which is going to be built, the graduate paper studies the main engineering geology properties of the rock-mass and soil-body in the dam area.Firstly, commence from the regional geology background of the engineering area, the paper systematically studies the geological structure, strata and lithology, earthquake movable characteristic and drapes and faults etc, and then analyzes the geological background of the rock-mass and soil-body in this area. Secondly, the paper summarizes and analyzes the rock-mass and soil-body's characters and the causes of formation. At the same time, the methods of geophysical prospecting and drilling are used to test and analyze the characters in the locale. Optimizing all kings of data and referring to the relative theories, the paper emphatically studies the dynamic response and permeability of the rock-mass and soil-body in this area. Based on all above researches, the author analyzes and synthesizes all kinds of the engineering geology characters, and then, carrys on the classification and quality evaluation to the rock-mass and soil-body in the dam district.All research results serve the productive practice directly, and provide the important technique theories for the construction and building of the hydropower station.