城市固体废弃物的压缩性及填埋场容量分析

总结了城市固体废弃物(MSW)中有机质的分解规律，提出了填埋体中有机质随时间(深度)变化的公式，并用现场测试结果进行了验证．进行了大尺寸的MSW室内压缩试验，通过现场取样获得了MSW原位压缩曲线．在此基础上提出了考虑荷载和有机质降解作用的填埋场容量计算方法．定量分析了有机质分解速度对填埋场的容量的影响．通过计算发现，当降解速率到达0．1／a这一量级时，有机质的降解能够有效地增加填埋场的容量．

Compression characteristics of MSW and analysis of capacity for landfills

Microbial decomposition rules of MSW are generalized and an equation to evaluate the variation of organic substance with time or depth is proposed in this thesis. The equation is verified when compared with the results from field-test. Large-dimension compression tests are performed in laboratory and void ratio-depth curve are obtained by means of in-situ sampling. By comparison of in-situ tests results and laboratory results, an equation to estimate the capacity for landfills is presented. The proposed methods are simple and parameters are tended to be determined. The effects of organic content and decomposition rate on the settlement and capacity of landfills are quantitatively analyzed. Through calculations, it's found that the settlement of landfills is influenced by organic biodegration; especially when decomposition rate increases up to the 0.1/year level, decomposition will contribute much to the capacity of landfills.