城市垃圾田间持水量的试验研究  

Experimental Study on Field Capacity of Municipal Solid Waste

作　　者：王克虹[1] 叶剑[2] 兰吉武[2] 马小飞[2] 李俊超[2] 

机构地区：[1]深圳市下坪固体废弃物填埋场,广东深圳518001 [2]浙江大学软弱土与环境土工教育部重点实验室,浙江杭州310027

出　　处：《环境卫生工程》2015年第1期31-35,共5页Environmental Sanitation Engineering

基　　金：国家重点基础研究发展计划(973)项目(2012CB719800);深圳市城管局科研课题(201319)

摘　　要：通过自制大尺寸田间持水量室内测试仪,对上海老港填埋场不同龄期的垃圾试样进行各级荷载下的室内试验研究。结果表明：同一组试样中,应力条件或干容重越大,田间持水量（以湿重含水率表征）越小;相同应力条件下,表层填埋垃圾龄期越大,田间持水量（以湿重含水率表征）越低,但在深度方向上,田间持水量（以湿重含水率表征）变化不明显;田间持水量（以体积含水率表征）随着应力的增大,在一定范围内（0-100 kPa）先增大,超过一定应力后减小。并对国内外测试数据进行了汇总和比较。Laboratory tests under different loads were carried out on municipal solid waste which was taken from Shanghai Laogang Waste Landfill Site by using a home-made heavy gauge device.The results showed that the field capacity（wet basis moisture content） decreased with the increase of stress condition or dry density in the same sample.Under the same degree of the stress condition,the field capacity（wet basis moisture content） decreased with the increase of the age of municipal solid waste which was in the surface layer,and it did not change significantly in the depth direction.The field capacity（volumetric water content） increased within a certain range（0-100 kPa） as the increase of the stress condition,and then it decreased after the stress condition reached a certain value.Finally,the results of different tests at home and abroad were collected and compared.

关 键 词：城市固体废物 填埋场 田间持水量 干容重 

分 类 号：X705[环境科学与工程—环境工程]