Abstract:In order to demonstrate the scientificity and rationality of grass-wrapped silt technology widely used in Liangzhu period,unconfined compressive strength test and large-scale consolidation test were carried out on single grass-wrapped silt and grass-wrapped silt stack block.The experimental results show that the deformation of grass-wrapped silt can be divided into three stages,and the strip will be broken when the strain of grass-wrapped silt reaches 20%.The unconfined compressive strength of single grass-wrapped silt is not significantly different from that of open-joint stacking,but the unconfined compressive strength of single grass-wrapped mud can be improved obviously by staggered joint stacking.The drainage layer between grass-wrapped silt will accelerate the consolidation of silt,and the compaction and embedding of reed grass and strip will lead to the increasing of vertical deformation.The contribution of the deformation of reed grass and strip to the vertical deformation mainly occurred 3 hours ago.With the increasing of load,most of the deformation tended to be completed in the early stage,and the density of silt in the consolidated grass-wrapped silt was 2.50% higher than the undisturbed silt.Its cohesion and friction angle are 38.7% and 20.5% higher than the undisturbed silt respectively.