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防止含有多层土工合成材料复合衬里的填埋场的平移破坏是填埋场设计中的最重要问题之一。发生在多层衬里界面上的平移破坏的破坏面可能会在背坡上通过衬里的一个界面,而在底部却通过衬里的另一个界面;具有最小安全系数的衬里最危险界面会随着填埋高度和填埋体形状的变化从一个界面转移到另一个界面。在填埋高度较小时,30 cm的渗滤液水位对稳定分析计算的最危险界面和安全系数都会有较大的影响;但是随着填埋高度的增高,30 cm的渗滤液水位对最危险界面改变的和安全系数降低比例的影响变得越来越小。由于渗滤液水位的升高,不仅会导致安全系数的减小,而且还可能会导致多层衬里的最危险界面从一个界转移到另一个界面。提高设计水平,解决目前我国填埋场在长期运行中的渗滤液水位升高问题,保证填埋场的稳定性,是目前迫切需要重视和解决的问题。
It is one of the most important problems in landfill design to prevent the translation failure of landfill with multi-layer geosynthetic composite liner. The destructive destructive destructive plane of translational displacement that occurs at a multi-layered liner interface may pass through one interface of the liner on the back slope while passing through another interface of the liner at the bottom; the most dangerous interface of the liner with a minimum safety factor will fill with landfill Changes in height and landfill shape shift from one interface to another. When the landfill height is small, the leachate water level of 30 cm will have a great influence on the most dangerous interface and the safety factor of the stable analysis and calculation. However, as the landfill height increases, the leachate water level of 30 cm will affect the most dangerous interface The impact of changing and decreasing the safety factor ratio becomes smaller and smaller. Due to the leachate level increase, not only will the safety factor be reduced, but it may also result in the most dangerous interface of a multilayer liner moving from one boundary to another. To improve the design level and solve the problem of landfill leachate water level rising in long-term operation in our country to ensure the stability of landfill, it is an urgent problem to be paid attention to at present.