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结合生活垃圾PTH蠕变方程式中的相关参数,依据重庆市长生桥垃圾卫生填埋场的填埋工艺和填埋方案,得出填埋历程与填埋高度的关系曲线。通过与土压缩理论计算方法相比较发现,土压缩理论中参数选取主要以经验为主,假设条件也与实际情况不符,而PTH蠕变模型中各参数均可由室内压缩蠕变试验得出,依据充分。计算表明,重庆市长生桥垃圾卫生填埋场在填埋过程中产生的沉降达25.72%,在容量估算中如果忽略这一数据则会对填埋场的经济性分析产生一定影响。
According to the relevant parameters in the PTH creep equation of domestic waste and according to the landfill technology and landfill plan of Chongqing Changshengqiao Sanitary Landfill, the relation curve between landfill process and landfill height is obtained. Comparing with the calculation method of soil compression theory, it is found that the parameter selection in soil compression theory is mainly based on experience, the assumptions are not in accordance with the actual situation, and the parameters of PTH creep model can be obtained by indoor compression creep test full. The calculation shows that the settlement of Chongqing Changshengqiao Sanitary Landfill reached 25.72% during the landfill process. Ignoring this data in the capacity estimation will have an impact on the economic analysis of the landfill.