将带状塑料排水板用插板机插入软土中,然后在地基面上加载预压(或采用真空预压),土中水沿塑料板的通道溢出,地基得以加固,这种方法称为塑料板排水预压法,其原理与沙井法相同。与砂井法相比,塑料板排水法具有打设机械轻、效率高、施工简便、对土扰动小等优点,更适于进行超软土地基加固。 The strip plastic drainage board is inserted into the soft soil with the inserting machine, and then the preload (or vacuum preloading) is applied to the foundation surface. The water in the soil overflows along the channel of the plastic plate, and the foundation can be reinforced. This method is called Plastic plate drainage preloading method, the same principle with the manhole method. Compared with the sand well method, the plastic board drainage method has the advantages of lighter construction, higher efficiency, simpler construction, less disturbance to the soil, etc., and is more suitable for super soft ground reinforcement.