随着城市化及经济的快速发展，垃圾的产量逐年增加，城市垃圾填埋场不堪重负，需要科学的处理方法。MBT（机械生物处理）采用机械、生物降解的方法将垃圾中可回收、可焚烧、可降解的材料分离出来，将残留物再进行填埋，这样可以大大减少垃圾的填埋量。本项目采用室内试验、模型试验及理论分析的方法，研究MBT垃圾的强度特性及其强度机理。室内试验主要采用颗分试验、压缩与直剪联合试验及三轴试验研究垃圾的颗粒大小、变形与强度相关特性，建立MBT垃圾的强度模型，得到垃圾的强度参数及规律；模型试验采用载荷试验得到垃圾的P-S曲线，监测垃圾的沉降、产气、产液等。通过试验和理论分析，建立MBT垃圾的强度理论体系，进一步解释垃圾的强度机理，为MBT垃圾填埋场的稳定性分析提供依据。本项目的研究，可以促进人们对科学处理城市生活垃圾的新认识，加深对MBT垃圾强度特性的理解，对于城市的环境保护和可持续发展具有重要的理论和实际意义。

As the development of the urbanization and the economy of our country, the municipal solid waste is increasing year by year, and the scientific treatment method are needed. The residual waste will be landfilled by the mechanical biological treatment, and the municipal solid waste will be reduced greatly because of the recovery , incineration and the biodegration matearials can be sorted out. The shear strength and the mechanism of the MBT waste will be studied by the laboratory test, model test, and the theoretical analysis method. The deformation and combined the strength will be studed by the gradation test, compresssion combined derect shear test, and triaxial test, and the MBT waste strength model and the model parameters will be obtained. The model test include the load test,monitoring the settlement, methane gas, leachate, and the P-S curve will be obtained. The shear strength theory could be established, and the mechanism of the strength can be deeply explained by the test data and the theoretical analysis, and the scientific evidence can be provided for the MBT waste landfill stability analysis. The project can promote people to understand newly for the waste treatment scientifically, and know deeply the MBT strength properties, and it has the important theoretical and the practical significance for the environmental protection and the sustainable development.