摘要
为了对城市固体废弃物的持水特性进行分析,采用非饱和固结仪对6组人工配制的城市固体废弃物试样进行了土水特征曲线测定的室内试验,同时还采用滤纸法量测试样的土水特征曲线,并对试样孔隙大小分布指标λ进行了分析。试验结果表明:试样的进气值很低,为1kPa左右,荷载作用使进气值升高;λ值随着试样初始孔隙比的增加而减小,随着试样有机物质量分数的增加而增加;使用滤纸法测城市固体废弃物的土水特征曲线时,高吸力阶段的值更加合理,更有参考性。
In order to analyze the hydraulic properties of municipal solid waste （MSW）,laboratory tests on the soil-water characteristic curves of 6 groups of MSW samples with different void ratios and organic contents are performed by means of the unsaturated consolidation apparatus.The filter paper method is also employed to determine their soil-water characteristic curves.The distribution index λ of void size of the samples is analyzed.The results show that the air-entry value of the MSW samples is very small and about 1 kPa,and it increases owing to the action of loading.The value of λ decreases with the increase of the initial void ratio and increases with the increase of the organic content in the samples.For measuring the soil-water characteristic curves of MSW by means of the filter paper method,the values at high suction phase are more rational and significant.
出处
《水利水电科技进展》
CSCD
北大核心
2012年第1期34-38,共5页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金(50879022)
江苏省自然科学基金(BK2008355)
江苏省高校研究生科技创新计划(CXZZ11-0427)
关键词
城市固体废弃物
持水特性
土水特征曲线
进气值
非饱和固结仪法
滤纸法
municipal solid waste
hydraulic property
soil-water characteristic curve
air-entry value
unsaturated consolidation apparatus method
filter paper method
