Vacuum consolidation of wheat straw roller group and prediction based on grey system model

At present, with the development of large-scale land reclamation, construction projects such as port fairway, wharf, navigation lock, frequently occurring silt problems hinder the progress of these projects. One of the common treatment methods is traditional vacuum drainage consolidation, but its deficiencies are gradually revealed in the practical engineering application. Furthermore, combined with the fact that straw burning will cause heavy environmental pollution and serious waste of straw resources, the author has creatively put forward wheat straw roller group for treating silt with high moisture content and a series of experiments have been performed. In order to provide the theoretical basis and technical support for practical engineering application, the settlement and consolidation degree have been predicted using grey system model and the results have been compared with that of the traditional three-point method. The experiment has shown that treating with silt with high water content by straw roller group on vacuum preloading drainage consolidation is feasible and effective; GM(1, 1) model has better accuracy than three-point method for prediction and results from GM(1, 1) model are better coincides with measured values. © 2016 ejge.