考虑生物降解的填埋场长期沉降研究

Estimation of long-term settlement of landfill considering biological decomposition

填埋场沉降是环境岩土工程主要研究课题,填埋场沉降主要由堆载瞬时沉降、与时间有关的填埋体骨架蠕变和有机物生物降解引起的沉降等3部分组成。迄今为止,国内外学者建立了许多估算填埋体沉降的数学模型。根据总结归纳的典型填埋体沉降计算模型,结合某填埋场沉降实测资料,探讨了计算模型的适用性。

Landfill settlement is a topic of concern in geoenvironmental research; Three important mechanisms that contribute to the compression of landfill are instantaneous compression in response to applied load, secondary mechanical creep and time-dependent biological decomposition. In this study, we investigated several approaches for calculating the compression of the municipal solid waste, and then discussed their validity in the South China.