The Study On Landfill Gas Migration Model In Beijingnanzhan

With the rapid economic development and urbanization, the generated quantity of municipal solid waste (MSW) increased at high speed in China. Sanitary Landfill is currently our primary means of dealing with spam, with the landfill's large-scale construction, pollution control and landfill gas resources of the problem has become acute. At the same time, with the increasing urban population, the cities have been constantly building and the construction of the demolished building had a litter and municipal solid waste are dumped at landfill. Due to the existence of construction waste, municipal solid waste will refuse degradation of organic produce landfill gas and landfill gas migration have an impact. As a result, such a specific law of landfill gas migration study is of great realistic significance.In this paper, the theory and mathematical analysis to deal with a combination of methods to landfill as a secondary building land for the project Beijingnanzhan new study, analysis of the landfill superstructure in the garbage and the lower characteristics of municipal solid waste, which Particular type of landfill gas in the state of landfill garbage in-migration have been studied.First of all, a study on construction waste and municipal solid waste characteristics, an analysis of organic garbage landfill gas generated in the process and its impact, and the superstructure of garbage litter the lower degradation of organic produce landfill gas. Based on factors affecting the analysis and mathematical treatment ,using the Darcy's Law, drawn up construction waste and municipal solid waste mixture of the vertical permeability cover garbage and construction of gas permeability, set up for this particular type of landfill gas in the state of landfill garbage in-migration model, and model testing.The results show that the superstructure of solid waste features backbone, including the effective average pore diameter, porosity, pore degree of bending and so on, will have an impact on landfill gas migration. The establishment of the function of construction of solid waste features backbone and the permeability coefficient. For the construction of refuse in the upper and the lower is the kind of municipal solid waste landfill norms of non-state created by landfill gas migration model, which is already the norm in the landfill gas migration model on the basis of amendments to come, The model takes into account the construction of refuse on the effective average pore diameter impacts on landfill gas migration. Building a model of municipal solid waste and garbage mixture of the vertical permeability cover garbage and construction of gas permeability are building with an average pore diameter and effective spam-related function.Moreover, application to establish a mathematical model to calculate the landfill Beijingnanzhan pressure distribution.