Out-of-sync heat and gas generation in landfill and its effect on slope stability
Out-of-sync heat and gas generation in landfill and its effect on slope stability
复制标题
垃圾填埋场不同步的热量和气体产生及其对边坡稳定性的影响
DOI：
10.1680/jenge.21.00138
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发表时间：
2022-04
影响因子：
2.2
通讯作者：
Tao Zhang
中科院分区：
文献类型：
--
作者：
Shi Shu;Jianyong Shi;Zuqiang Yao;Tao Zhang
市政固体废物退化而产生的热量和天然气会影响垃圾填埋场的稳定性。当前，考虑到这些差异，人们了解了热量和气体产生之间的差异，并且垃圾填埋场坡度稳定性分析。在这项研究中，进行的实验室和现场监测测试表明，热产生比气体产生更早。然后在垃圾填埋场稳定性分析中考虑热量和气体之间的关系。温度和气体产生越早，安全系数越低，最小安全系数越早。当气体产生达到峰值时，通常会发生最小安全系数。考虑到温度或气体发电率保持在峰值时，使用的最小安全因子比同步热和气体产生的最小安全因子高1.25％。温度峰值峰值峰值，气体发电速率的较早峰峰值峰值，较高的渗滤液水平导致在有没有考虑的情况下获得的最小安全因子之间的差异更大。垃圾填埋场不稳定更可能在垃圾填埋场的初始阶段发生。
Heat and gas generation from the degradation of municipal solid waste affects landfill slope stability. Currently, the differences between heat and gas generation are understood and landfill slope stability analyses considering these differences are required. In this study, the conducted laboratory and field monitoring tests indicated that heat generation peaked earlier than gas generation. The relationship between the heat and gas generation was then considered in a landfill slope stability analysis. The earlier the temperature and gas generation peaked, the lower the safety factor and the earlier the minimum safety factor appeared. The minimum safety factor generally occurred when gas generation peaked. The minimum safety factors obtained with consideration of the out-of-sync heat and gas generation were up to 1.25% greater than those obtained when the temperature or gas generation rate was maintained at a peak value. A later peak in the temperature peaked, earlier peak in the gas generation rate peaked, and higher leachate level resulted in a larger difference between the minimum safety factors obtained with and without consideration of the out-of-sync heat and gas generation. Landfill slope instability is more likely to occur in the initial stage of landfilling.