城市生活垃圾主压缩特性试验及修正主压缩指数模型研究

doi:10.13722/j.cnki.jrme.2019.0019

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Abstract The modified primary compression index of municipal solid waste(MSW) is an essential parameter for predicting waste settlement，evaluating landfill capacity and planning landfill process. Two groups of large-scale model experiments and six groups of column compression tests were conducted to investigate the primary compression behavior of MSW，and a modified primary compression index model was proposed. It is found that the modified primary compression index increases with increasing the moisture content or the compressible component content but decreases with rising the dry unit weight. A mathematical model for predicting the modified primary compression index was proposed taking the water content，dry unit weight and compressible component content into account，and the model was developed to predict the modified primary compression index with varied burial depths. Comparison between the model and the testing data of borehole samples from Qizishan landfill in Suzhou was carried out，which indicates that the model fits well the test data and performs better than the models documented in literature. An example illustrates that it is beneficial to take the variation of the modified primary compression index with burial depth into consideration in accurately planning the landfill process or/and assessing the landfill capacity of MSW landfills.

Key words： soil mechanics municipal solid waste(MSW) modified primary compression index water content dry unit weight compressible component content model

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	Articles by authors
	XU Hui1
	2
	ZHU Guang1
	ZHANG Zhenying1
	ZHAN Liangtong2
	CHEN Yunmin2

Cite this article:

XU Hui1,2,ZHU Guang1, et al. Experimental study on the primary compression behavior of municipal solid waste and a model of modified primary compression index[J]. , 2019, 38(6): 1270-1283.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2019.0019 OR http://www.rockmech.org/EN/Y2019/V38/I6/1270

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