Introduction To Non-cushion Sand Layer Vacuum Preloading Method

The method relates to a large area soft ground treatment method, in particular to a vacuum preloading method without a drainage sand layer. 

Non-cushion sand layer it includes the following main steps: 

1) laying drainage plates on the treatment site according to the plum pile type; 

2) arranging the horizontal drainage system to replace the medium coarse sand cushion used in the previous vacuum preloading construction, two kinds of laying can be used One of the ways; 

3) Connect the main pipe of the horizontal drainage system to the vacuuming device, and then vacuum the construction after filming. 

The vacuum preloading method for the non-drained sand cushion of the invention is suitable for the reinforcement of large-area soft soil foundation, especially for the dredger fill and the newly deposited ultra-soft soil, and the utility model saves a large investment of laying the sand cushion layer. The vacuum transmission effect is good, and the horizontal drainage system of the wire spring tube + tube plate connector + drainage plate can realize large-scale finished product and normalized construction, and the laying time is short, and can be recycled and reused. The construction period is short and the unique advantage of economic saving.