Abstract A one-year field monitoring of a geogrid reinforced municipal solid waste (MSW) slope was conducted in the Xingfeng Landfill. Settlement tubes, strain gauges and earth pressure cells were used to measure the vertical settlement, the reinforcement strains and the vertical earth pressures in the reinforced MSW slope, respectively. During the monitoring period, the waste sliding occurred and the fresh MSW was dumped at the top of the reinforced slope. The vertical settlement along the reinforcement was nonlinear and the peak settlement occurred at the central part of the reinforcement. The reinforcement strains and the vertical earth pressures at various positions were affected by the sliding and the waste dumping to differing extents. Along the lengths of the geogrid reinforcements, the reinforcement strains showed single-peak distributions. The peak strains were attained in the central part of the reinforcements and the minimum strains were attained at the tail ends. The vertical earth pressures mainly depend on the overlying loads; however, the distributions of them along the reinforcement were nonlinear. Based on the monitoring results, the slope stability evaluation was conducted. It shows that the internal stability of the reinforced MSW slope might be sufficient, while the external stability was insufficient, meaning that this reinforced project was unsuccessful. Finally, various lessons and design suggestions learned from this unsuccessful project were discussed, which could provide valuable references for the future practice of geosynthetic reinforced MSW.

中文翻译：

---

高食物垃圾含量垃圾填埋场土工格栅加固垃圾边坡的现场行为：案例研究

摘要 在兴丰垃圾填埋场对土工格栅加固的城市固体废物（MSW）边坡进行了为期一年的现场监测。沉降管、应变计和土压力传感器分别用于测量加筋垃圾边坡的竖向沉降、加筋应变和竖向土压力。监测期间，发生垃圾滑坡，新鲜的生活垃圾倾倒在加固坡顶。沿钢筋的竖向沉降是非线性的，最大沉降出现在钢筋的中心部位。不同位置的钢筋应变和竖向土压力受滑动和倾倒垃圾的影响不同。沿土工格栅加筋长度方向，加筋应变呈单峰分布。峰值应变出现在钢筋的中心部分，最小应变出现在尾端。竖向土压力主要取决于上覆荷载；然而，它们沿钢筋的分布是非线性的。根据监测结果，进行边坡稳定性评价。说明加固垃圾边坡的内部稳定性可能是足够的，而外部稳定性不足，这意味着该加固工程是不成功的。最后讨论了从这次失败的项目中吸取的各种经验教训和设计建议，可为今后土工合成材料加筋垃圾的实践提供有价值的参考。