| With the development of economy and megapolis as well as enhancement of idea in environment protection, problems on design theory and construction technology deserve more and more attention. However, geotechnical engineering of environment, as a newborn branch of learning, many theory and principle of design need to be explored and studied. So combining with the construction of Shenzhen Xiaping Municipal Solid Waste Landfill, the thesis goes deep into research in this field.First, by a large amount of investigation and analysis on theory and practice of Solid Waste Landfills in china, the engineering properties of municipal solid waste are discussed deeply, and in the basis of this, aiming at some practice problems such as pipeline system silting and inefficient for collecting and discharging, it puts forward concepts of double-deck anti-filter and applies to the design of landfill, and the characters of seepage prevention material and structures of seepage prevention are discussed deeply.Second, through the analysis of working-state of geomembrane, which is the key structure of seepage prevention system, this thesis dedeuces the limit hight of single unit or whole landfill under the stress permit of geomembrance. In the meanwhile the properties of load-bearing and load-surpporting characteristics are discussed, and a formula of load-bearing calculation and the method of stabiltieness calculation about solid waste slope are established.Going a step further, the relationship between settlements by organic substance's decomposing and that by sub-solidization, and the relationship between shearing-resists of base and load-surpporting rate, as well as the main factors which have effect on the limit height of landfill and the scope of calculation-variable are analysed.At last, the concrete methods of design and calculation besides are applied to the design and construction of Shenzhen Xiaping Solid Waste Landfill and good results are gained. |
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