期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：295
期号：4
页码：1-7
DOI：10.1088/1755-1315/295/4/042041
出版社：IOP Publishing
摘要：Plastic drainage board has played an important role in transferring vacuum pressure, as a drainage channel for groundwater and preventing the loss of soil in the process of soft foundation reinforcement by vacuum preloading method. This experimental study shows that the plastic drainage board bear obvious bending deformation during the vacuum preloading process. Both filter fabric and core drain are attached with soil and clogged. When the plastic drain board was taken out on site, most deformation was obviously lost due to stress relief. Compared with the unused board, the masses of on-site used plastic drain board and filter fabric increased significantly, the water flux and vertical permeability coefficient of filter fabric were significantly reduced, but their tensile strengths changed little.
