Fly Ash Embankment Key High Technology Research

China is the country which is the earth's biggest production and consumption of coal resources, the annual output of raw coal accounted for 25% of the world, about 1.6 billion tons, of which 75% used for energy consumption, 1/3 of electricity from coal-fired power generation in China. Coal-fired power generation for economic development to provide substantial energy, in the same time,it also generated a large number of fly ash waste, currently China's coal-fired power plant emissions of fly ash has reached more than 180 million tons each year. The emission of fly ash not only caused serious air pollution, soil pollution and water pollution, but also harm people's health, more importantly, it used up a lot of land resources, causing people to contradictions, triggered a lot of economic and social problems. It can be seen on the treatment and utilization of fly ash has become a prominent problems which face of the social and economic, the comprehensive utilization of fly ash to strengthen the research is imperative. This article relies on research projects in Guizhou Science and Technology Commission item:"Compliance completed highway embankment Fly ash comprehensive application of pure research in Zhunbi highway", give the stady of the compliance of the material properties and engineering characteristics, and high fill coal gray pure gray embankment stability analysis of the mechanical calculation.First of all, summed up the fly ash in highway engineering in a variety of applications, it is one of measures which is one of subsrantial use of fly ash as roadbed filler,and describes the current domestic and international research in this area the status and the latest achievements.Secondly, give a study through a series of tests on the microstructure, physical and chemical properties, engineering properties of fly ash material, analysis of the compliance to complete the highway along the fly ash material properties and engineering characteristics.Third, set up high fill embankment of fly ash pure gray model, study to analyze the settlement of subgrade characteristics and slope stability by a large centrifuge model test, and with finite element method analysis of a similar model to achieve experimental data and theoretical results of the analysis can confirm each other.Finally,based on conclusion of the pilot study and theoretical analysis, proposed checking mode,the stability of the evaluation criteria, the basic cross-section form and drainage system design principles of fly ash highway embankment in Zhunbi highway, thus summed up complete compliance of pure fly ash gray along the highway embankment construction principles,carry out such design and construction of roadbed have a certain degree of referential significance in the future.