Key laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, China.
Waste Manag Res. 2022 Apr;40(4):383-392. doi: 10.1177/0734242X211060921. Epub 2021 Dec 8.
The increase in landfill temperature often results in shear strength reduction of both the solid waste and the liner, which leads to slope instability. However, very few landfill slope analysis methods can simultaneously consider the effect of temperature on the shear strength of the waste solid and the liner. In this study, based on the strength parameters of the liner and waste with temperature, a wedge method for translational failure analysis of landfills considering temperature increase was established. The results showed that rising temperatures caused by biochemical degradation at the bottom and middle of the landfill reduced the anti-slide force of back slope more than that of bottom slope. With the leachate level increasing, the effect of temperature rise on landfill stability became obvious. The feasibility of the proposed wedge method was verified by the engineering case study of Xiaping Landfill, Shenzhen, China. This study probably provides important guidance for the design, operation and management of municipal solid waste landfills.
垃圾填埋场温度的升高通常会导致固体废弃物和衬垫的抗剪强度降低，从而导致边坡失稳。然而，很少有垃圾填埋场边坡分析方法可以同时考虑温度对废弃物固体和衬垫剪切强度的影响。在本研究中，基于衬垫和垃圾的温度强度参数，建立了考虑温度升高的垃圾填埋场平移破坏分析的楔形方法。结果表明，由于底部和中部垃圾的生物降解作用导致的温度升高，使得后坡的抗滑力比底坡的抗滑力降低更多。随着渗滤液水位的升高，温度升高对垃圾填埋场稳定性的影响变得明显。通过对中国深圳下坪垃圾填埋场的工程实例研究，验证了所提出的楔形方法的可行性。本研究可能为城市固体废物填埋场的设计、运行和管理提供重要指导。
