Slope instability occurs in landfills owing to increased internal temperatures. However, strength characteristic tests for solid waste (SW) and landfill slope stability (SS) calculations that consider temperature variations are scarce in the literature. In this study, we conducted triaxial tests on SW under a range of temperature conditions and proposed the circular slide method (CSM) for calculating SS in consideration of temperature effects. SW cohesion decreased linearly with increasing temperature, whereas the internal friction angle remained essentially unchanged. Our results showed that higher temperatures reduced the SW shear strength, changing the most dangerous sliding arc away from the slope toe. The landfill slope safety factor decreased by more than 20% with an increase of the maximum temperature from 20°C to 50°C. Reduction of the leachate level (LL) led to a decrease in the landfill high-temperature zone and the safety factor increased according to LL and temperature distribution. If cooling pipes are used to control the SW temperature, we recommend arranging the cooling pipes on the landfill liner. The proposed CSM can be used to analyse landfill SS.

由于内部温度升高，垃圾填埋场发生边坡不稳定性。但是，文献中很少考虑用于考虑温度变化的固体废物（SW）和垃圾填埋场边坡稳定性（SS）计算的强度特性测试。在这项研究中，我们在一定温度条件下对SW进行了三轴测试，并考虑了温度影响，提出了用于计算SS的圆滑方法（CSM）。SW内聚力随温度升高而线性降低，而内摩擦角则基本保持不变。我们的结果表明，较高的温度降低了SW的剪切强度，从而改变了最危险的滑动弧，使其远离坡脚趾。随着最高温度从20°C升高到50°C，垃圾填埋场边坡安全系数降低了20％以上。渗滤液水平（LL）的降低导致垃圾填埋场高温区的减少，并且安全系数根据LL和温度分布而增加。如果使用冷却管控制SW温度，建议将冷却管布置在垃圾填埋场衬里上。建议的CSM可用于分析垃圾填埋场SS。