五洋建设技术研究所在大分机场吹填地超软基上进行了埋设塑料排水通道施加负压的真空预压试验。主要目的是了解超软基上排水通道的施工性能和真空预压效果。在试验区内把50m长的排水材料以0.7m间距水平埋入40根,在其附近按边长0.7m的正方形布置垂直排水通道100根。试验得出以下 Wuyang Institute of Construction Technology at the Oita Airport filling soft ground ultra-soft plastic drainage channel under the vacuum pressure applied to the preload test. The main purpose is to understand the construction performance of the drainage channel on the ultra-soft base and the vacuum preloading effect. In the test area, 50m of drainage material was buried at a distance of 0.7m at a distance of 40, and vertical drainage channels of 100 were arranged in the vicinity of 0.7m by a square. The test leads to the following