城市生活垃圾的应力压缩曲线及压缩参数

Study on the Properties of Stress Compression for Municipal Solid Waste

对城市生活垃圾进行了现场测试和室内压缩试验,并对其压缩曲线进行了分析与对比,得到了垃圾的压缩参数：100-200 kPa压力区间的压缩系数为0.72-3.2 MPa-1,压缩模量为1.50-3.44 MPa,压缩指数为0.24-0.99。研究表明,垃圾的压缩性很大,描述生活垃圾的压缩性应以其所受的压力区间为前提,生活垃圾的压缩系数与初始孔隙比的关系具有线性关系。

The laboratory stress compression testing and in-situ testing of municipal solid waste are studied. The curve of compression of in-situ and laboratory are obtained. The compression coefficient for 100--200kPa is 0.72--3.2 MPa-1 ;The modulus of compression for 100--200 kPa is 1.50--3.44 MPa;The compression index is 0. 24--0. 99. The compressibility of municipal solid waste is very big,the relationship between compression coefficient and initial void ratio is linear for the given pressure range.